Active Q-switching in an erbium-doped fiber laser using an ultrafast silicon-based variable optical attenuator
|
|
- Julius Lang
- 6 years ago
- Views:
Transcription
1 Active Q-switching in an erbium-doped fiber laser using an ultrafast silicon-based variable optical attenuator You Min Chang, 1 Junsu Lee, 1 Young Min Jhon, and Ju Han Lee 1,* 1 School of Electrical and Computer Engineering, University of Seoul, Seoul 13-73, Korea National Agenda Research Division, Korea Institute of Science and Technology (KIST), Seoul, Korea *j.h.lee@ieee.org Abstract: Presented herein is the use of an ultrafast Si-based variable optical attenuator (VOA) as a Q-switch for rare earth-doped fiber lasers. The ultrafast VOA is based on a forward-biased p-i-n diode integrated with a ridge waveguide, which was originally designed and optimized for WDM channel power equalization in optical communication systems. By incorporating a Si-based VOA with a transient time of ~1 ns into an erbium-doped fiber-based Fabry-Perot cavity it has been shown that stable Q-switched pulses possessing a temporal width of less than ~ ns can be readily obtained at a repetition rate of up to ~1 MHz. The laser s peak power of ~3 W is shown to be obtainable at khz with a slope efficiency of ~1%. 11 Optical Society of America OCIS codes: (.351) Lasers, fiber; (1.35) Lasers, Q-switched; (13.31) Integrated optics devices. References and links 1. D. J. Richardson, J. Nilsson, and W. A. Clarkson, High power fiber lasers: current status and future perspectives, J. Opt. Soc. Am. B 7(11), B3 B9 (1).. R. Paschotta, R. Häring, E. Gini, H. Melchior, U. Keller, H. L. Offerhaus, and D. J. Richardson, Passively Q- switched.1-mj fiber laser system at 1.53 mum, Opt. Lett. (), 3 39 (1999). 3. Z. J. Chen, A. B. Grudinin, J. Porta, and J. D. Minelly, Enhanced Q switching in double-clad fiber lasers, Opt. Lett. 3(), 5 5 (199).. A. F. El-Sherif and T. A. King, High-energy, high-brightness Q-switched Tm 3+ -doped fiber laser using an electro-optic modulator, Opt. Commun. 1( ), (3). 5. D. Huang, W. Liu, and C. C. Yang, Q-switched all-fiber laser with an acoustically modulated fiber attenuator, IEEE Photon. Technol. Lett. 1(9), ().. Y. Joeng, Y. Kim, A. Liem, K. Moerl, S. Hoefer, A. Tuennermann, and K. Oh, Q-switching of Yb 3+ -doped fiber laser using a novel micro-optical wavelength on micro-actuating platform light modulator, Opt. Express 13(5), (5). 7. P. Pérez-Millán, A. Díez, M. V. Andrés, D. Zalvidea, and R. Duchowicz, Q-switched all-fiber laser based on magnetostriction modulation of a Bragg grating, Opt. Express 13(13), (5).. A. Creunteanu, D. Bouyge, D. Sabourdy, and P. Blondy, V. couderc, L. Grossard, P. H. Pioger, and A. barthelemy, Deformable micro-electro-mechanical mirror integration in a fibre laser Q-switch system, J. Opt. A, Pure Appl. Opt., S37 S351 (). 9. K. Kieu and M. Mansuripur, Active Q switching of a fiber laser with a microsphere resonator, Opt. Lett. 31(), (). 1. F. Bammer and R. Petkovsek, Q-switching of a fiber laser with a single crystal photo-elastic modulator, Opt. Express 15(1), (7). 11. R. J. Williams, N. Jovanovic, G. D. Marshall, and M. J. Withford, All-optical, actively Q-switched fiber laser, Opt. Express 1(), (1). 1. C. Lee, A MEMS VOA using electrothermal actuators, J. Lightwave Technol. 5(), 9 9 (7). 13. Y.-H. Wu, Y.-H. Lin, Y.-Q. Lu, H. Ren, Y.-H. Fan, J. Wu, and S.-T. Wu, Submillisecond response variable optical attenuator based on sheared polymer network liquid crystal, Opt. Express 1(5), 3 39 (). 1. M. Asghari, Silicon photonics: a low cost integration platform for datacom and telecom applications, Proc. OFC/NFOEC, paper NThA (). # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 911
2 15. R. Soref, The past, present, and future of silicon photonics, IEEE J. Sel. Top. Quantum Electron. 1(), (). 1. B. Jalali and S. Fathpour, Silicon photonics, J. Lightwave Technol. (1), 15 (). 17. S. Park, K. Yamada, T. Tsuchizawa, T. Watanabe, H. Shinojima, H. Nishi, R. Kou, and S.-I. Itabashi, Influence of carrier lifetime on performance of silicon p-i-n variable optical attenuators fabricated on submicrometer rib waveguides, Opt. Express 1(11), (1). 1. Introduction Laser Q-switching is a well-known technique used for the generation of high energy pulses that have nanosecond-order temporal widths. In particular, Q-switched rare-earth-doped fiber lasers have recently enjoyed a great deal of technical and industrial interest, since compact fiber-integrated lasers can be easily incorporated into a variety of material processing applications [1]. Q-switching can be classified into passive and active techniques, depending on use of active modulation of the laser cavity Q-factor. In the case of passive Q-switching, a saturable absorber is incorporated into the cavity, which acts as a self-operating Q-switch. However, even if the passive Q-switching is simple and robust, it has a fundamental limitation in regards to the flexible control of the repetition rate and timing synchronization due to the fixed physical properties of the saturable absorbers []. Active Q-switching uses an externally-modulated Q-switch, which allows for flexible repetition rate changes and timing synchronization [3, ]. Commonly used active Q-switches are acousto-optic modulators [3] and electro-optic modulators []. Using the electric pulse-driven modulators, the laser cavity can be switched between high-loss and low-loss regimes, resulting in the production of high quality of Q- switched pulses. Recently, a great many investigations have been performed in order to find active Q-switches alternatives that provide cost-effective and higher performance solutions more suitable for all-fiber integrated laser systems. The acoustically modulated fiber attenuator [5], the micro-optical waveguide on a micro actuating platform light modulator [], the magnetostriction-based fiber Bragg grating (FBG) modulator [7], the electrostatically actuated micro-mirror [], the microsphere resonator [9], the single crystal photo-elastic modulator [1], and the resonance optical pumping-based FBG modulator [11] are only a few examples. High-quality Q-switched pulses have been successfully achieved through the foregoing alternative switches in rare-earth-doped fiber lasers, but there is still a huge demand for the expansion of the technological basis for alternative Q-switches, in particular ones more suitable for simple and practical applications. In this paper we present a new kind of Q-switch, an ultrafast Si-based variable optical attenuator (VOA) for the generation of nanosecond pulses in a rare earth-doped fiber laser. By incorporating the ultrafast Si-based VOA into an erbium-doped fiber (EDF) laser cavity it has been experimentally shown that Q-switched pulses with a temporal width of less than ns can be readily obtained. The repetition rate has been shown to be tunable up to ~1 MHz. It should be noted that VOAs have never been used as a Q-switch for nanosecond pulse generation in fiber lasers until now, due to their slow response time (typically larger than sub milliseconds) no matter whether they are mechanically or electrically controlled [1, 13]. However, the recent development of ultrafast VOAs with a response time of less than 1µs through Si photonics technology enables us to easily build high speed Q-switched fiber lasers without the need for any expensive and high electrical power consumption modulator type Q- switches. Compared to the commonly used acousto-optic modulators and electro-optic modulators, the Si VOA-based Q switch has several noticeable advantages, such as a low RF driving power (less than mw), a low cost, and an extremely compact size [1]. Si-based photonic devices have recently been intensively investigated as potential lowcost and high performance building blocks for ultrahigh capacity optical communication systems and microprocessor optical interconnects, due to their proven capabilities in regards to electronic integration and mass production [15, 1]. Notably, the Si-based VOA used in this work, which is a commercially available component based on a silicon ridge waveguide # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 91
3 integrated with a p-i-n diode, was originally designed and optimized for the power equalization of WDM channels in optical communication systems [1, 17]. In this work, we demonstrate one more potential use of this compact and low-cost device by applying it to the high speed Q-switching of a fiber laser.. Experiment setup FBG Function Generator Si-based VOA 9 nm Pump LD 9/155 nm WDM EDF 3 m % Reflection Between air and silica Laser Output Reflectivity (db) Wavelength (nm) Fig. 1. The schematic of our Q-switched EDF laser and the measured optical spectrum of the FBG used in this experimental configuration. The schematic of our Q-switched EDF laser is shown in Fig. 1. The fiber laser was constructed using a simple Fabry-Perot type cavity, in which two mirrors are defined by a fiber Bragg grating (FBG) reflector and a cleaved facet at the fiber end (% reflection between silica and air). A 3-m-long EDF with a peak absorption of db/m at 153 nm (Liekki, ER-/15) was used for the active medium, which was pumped by a 9-nm pump laser diode (LD) via a 9/155-nm wavelength division multiplexer (WDM). The Q-switch was made using a fiberized ultrafast Si-based VOA (Kotura, UltraVOA) inserted between the FBG and the WDM [1, 17]. The reflectivity of the FBG (JDSU, P/N FBG-QT9-355-) used in this experimental configuration was 95.5%, as shown in Fig. 1. The center wavelength and spectral bandwidth (full width at half maximum) of the FBG were 155. nm and.39 nm, respectively. The total length of the laser cavity was 1 m. The laser output from the 9% output coupler defined by the Fresnel reflection from the cleaved fiber end facet was monitored using a 1-GHz digital oscilloscope and an InGaAs photodetector with a bandwidth of 15 MHz. The key component in this Q-switched laser configuration was the ultrafast Si-based VOA, which was fabricated using a silicon p-i-n diode structure built on a silicon optical waveguide. The operating principle of this device is as follows: When a forward-biased current is applied to the p-i-n diode section, the highly concentrated free carriers absorb the photons propagating along the waveguide. This means that one can readily control the amount of photon absorption by adjusting the magnitude of the injected current. The response time is known to be less than 1 µs. This device was originally designed and optimized for optical communication systems applications, such as optical transient suppression, blocking, and analog signal modulation. The ultrafast Si-based VOA used in this experiment is commercially available. Further details on this device are fully described in [1] and [17]. 3. Characterization of ultrafast Si-based VOA In order to determine the electro-optic properties of the ultrafast Si-based VOA, we carried out a series of characterization measurements. First, we measured the optical attenuation of the device as a function of the applied forward-biased current, as shown in Fig.. The maximum attenuation was found to be ~35 db at a current of 5 ma, at the forward bias voltage of 5 V. Even at a current of ma, a 15-dB attenuation was possible. We then measured the transient response of the device in order to determine the maximum switching speed by modulating the current with a negative square electric pulse possessing rise and fall times of ~ ns. The measured temporal shapes of the applied electrical pulse and the # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 913
4 corresponding optical pulse from the VOA are shown in Fig.. The variable VOA was driven at a peak current of 5 ma to provide a dynamic attenuation of ~. db. The rise and fall times, which were defined as the temporal duration between 1 and 9% of the maximum transmittance, were found to be ~1 and ~179 ns, respectively. This indicates potential for repetition rate scaling beyond 1 MHz. The insertion loss of the fiberized variable VOA was measured to be ~1.7 db. The polarization dependent loss was measured to be less than.5 db. Attenuation (db) Current (ma) Electrical Current (a.u.) Switch-Open Time Rise Time 1ns Electrical Pulse Optical Pulse TIme (ns) Fall Time 179ns Optical Fig.. The measured optical attenuation v.s. the driving current curve and the transient response of the ultrafast Si-based VOA used in this experiment.. Q-switched laser output operating at khz 1 1 ~5ns Time (µs) Fig. 3. The measured oscilloscope trace of the Q-switched pulses at khz and the close-up view of a pulse. At first the laser was operated at a repetition rate of khz by modulating the 5 ma driving current, at a V forward bias. This means that the VOA driving power was less than mw. Considering the rise and fall times we decided to open the switch for a duration of 7 ns and close it for the rest of the period. In other words, the temporal duration of the applied electrical pulse was fixed to be 7 ns, resulting in a duty ratio of 1.% at a repetition rate of khz. Figure 3 shows the measured oscilloscope trace of the pulse trains emitted from the laser; a close-up view is shown in Fig. 3. The measured pulse spacing and pulse width were measured to be 5 µs and 5 ns, respectively. Figure shows the measured output spectrum at a pump power of 5 mw. Figure shows the measured average output power as a function of the pump power. The laser center wavelength was ~155. nm; the spectral width was observed to be ~.35 nm. The laser threshold was ~ mw; the maximum output average power of ~37 mw was obtained at a pump power of 1 mw. The slope efficiency was ~1%. From the average power value the maximum peak power level was estimated to be ~3W. At the pump power level of 1 mw we did not observe any damage of the VOA. According to the specification of the VOA it maximum handling optical power was ~5 mw in the continuous wave mode. # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 91
5 35 Power (1dB/div) Output Power (mw) Wavelength (nm) Pump Power (mw) Fig.. The measured optical spectrum of the Q-switched laser output at khz and the measured average output power vs. the pump power. The resolution bandwidth of the optical spectrum analyzer used was. nm. 5. Operating frequency tuning of the Q-switched laser Next, we attempted to determine the maximum operating frequency of the Q-switched laser. In order to do this we increased the modulation frequency of the driving current supplied to the variable VOA from khz to 1 MHz. The pump power and driving current were fixed at 5 mw and 5 ma, respectively. The applied electrical pulse duration was also maintained at a value of 7 ns and therefore the duty ratio was decreased accordingly. Figure 5 shows the measured pulse peak power variation with the increasing repetition rate; Fig. 5 shows the corresponding pulse width change. The output pulse width was observed to increase with the increased repetition rate from ~5 ns to ~ ns; the output pulse peak power decrease was inversely proportional to the repetition rate. Pulse Peak Power (W) Pulse Width (ns) Repetition Rate (khz) 1 Repetition Rate (khz) Fig. 5. The measured peak power and the temporal width of the output pulses as a function of the repetition rate. Figure presents the measured oscilloscope trace of the laser output at a repetition rate of 1 MHz; a close-up view is shown in Fig.. The high quality of the Q-switched pulses is clearly evident at a repetition rate of 1 MHz from these figures. As an interesting sideexperiment we attempted to further increase the repetition rate faster than 1 MHz, but found that the generated pulse quality was not as stable as that found at 1 MHz. Figure 7 illustrates the measured oscilloscope traces of the applied electrical pulse, the VOA response, and the output Q-switched pulse at repetition rates of 1.5 and MHz, respectively. The duty ratio of the applied electrical pulse was set to be 5% considering the pulse period to obtain appropriate gain building-up and photon emission times. It is obvious from the figure that the VOA response had a triangular temporal shape rather than a rectangular shape due to the limited rise and fall times. Consequently, the output pulses became unstable at 1.5 MHz even if the pulse width was maintained at ~ ns. Then, significant temporal distortion of the # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 915
6 output was observed at MHz as shown in Fig. 7. To further confirm the reason of pulse degradation we carried out the same measurements at various duty ratios of the applied electrical pulse, but always observed the same sort of distortion at repetition rates larger than 1 MHz. 1 1 ~ns Time (µs) Fig.. The measured oscilloscope trace of the Q-switched pulses at 1 MHz and the close-up view of a pulse. Voltage (a.u.) Power (a.u.) Electrical Pulse VOA Response ~ ns Output Pulse Power (a.u.) Voltage (a.u.) Electrical Pulse VOA Response ~9 ns Output Pulse Conclusion Fig. 7. The measured oscilloscope traces of the applied electrical pulse, the corresponding VOA response, and the output Q-switched pulse at repetition rates of 1.5 and MHz, respectively. We have demonstrated that an ultrafast Si-based VOA can readily be used as a high speed and low cost Q-switch for the generation of nanosecond pulses in a rare earth-doped fiber laser. It was shown that stable Q-switched pulses with a temporal width of less than ns could be readily obtained using the variable VOA with a repetition rate of up to 1 MHz. We believe that such ultrahigh speed Si-based, fiberized VOAs can be used as a highly promising alternative Q-switch for the practical implementation of high speed Q-switched fiber lasers. Further research on the enhancement of the optical power handling capacity of the devices is essentially required for their successful application to high power fiber lasers. Acknowledgments This research work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (MEST), Republic of Korea (No ). This work was partly supported by the Project funded by MKE/KEIT (No ) Ultra-Precision Green Processing Technology Using Femtosecond Fiber Laser. # $15. USD Received Sep 11; revised 1 Oct 11; accepted 9 Dec 11; published 1 Dec 11 (C) 11 OSA 19 December 11 / Vol. 19, No. 7 / OPTICS EXPRESS 91
S-band gain-clamped grating-based erbiumdoped fiber amplifier by forward optical feedback technique
S-band gain-clamped grating-based erbiumdoped fiber amplifier by forward optical feedback technique Chien-Hung Yeh 1, *, Ming-Ching Lin 3, Ting-Tsan Huang 2, Kuei-Chu Hsu 2 Cheng-Hao Ko 2, and Sien Chi
More informationQ-switching of an all-fiber laser by acousto-optic modulation of a fiber Bragg grating
Q-switching of an all-fiber laser by acousto-optic modulation of a fiber Bragg grating M. Delgado-Pinar Departamento de Física Aplicada-ICMUV, Universidad de Valencia, Dr. Moliner 50, 46100, Burjasot,
More informationActive mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity
Active mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity Shinji Yamashita (1)(2) and Kevin Hsu (3) (1) Dept. of Frontier Informatics, Graduate School of Frontier Sciences The University
More informationA continuous-wave Raman silicon laser
A continuous-wave Raman silicon laser Haisheng Rong, Richard Jones,.. - Intel Corporation Ultrafast Terahertz nanoelectronics Lab Jae-seok Kim 1 Contents 1. Abstract 2. Background I. Raman scattering II.
More informationElimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers
Elimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers 1.0 Modulation depth 0.8 0.6 0.4 0.2 0.0 Laser 3 Laser 2 Laser 4 2 3 4 5 6 7 8 Absorbed pump power (W) Laser 1 W. Guan and J. R.
More informationCost-effective wavelength-tunable fiber laser using self-seeding Fabry-Perot laser diode
Cost-effective wavelength-tunable fiber laser using self-seeding Fabry-Perot laser diode Chien Hung Yeh, 1* Fu Yuan Shih, 2 Chia Hsuan Wang, 3 Chi Wai Chow, 3 and Sien Chi 2, 3 1 Information and Communications
More informationHybrid Q-switched Yb-doped fiber laser
Hybrid Q-switched Yb-doped fiber laser J. Y. Huang, W. Z. Zhuang, W. C. Huang, K. W. Su, K. F. Huang, and Y. F. Chen* Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan * yfchen@cc.nctu.edu.tw
More informationAn Amplified WDM-PON Using Broadband Light Source Seeded Optical Sources and a Novel Bidirectional Reach Extender
Journal of the Optical Society of Korea Vol. 15, No. 3, September 2011, pp. 222-226 DOI: http://dx.doi.org/10.3807/josk.2011.15.3.222 An Amplified WDM-PON Using Broadband Light Source Seeded Optical Sources
More informationQ-switching of Yb 3+ -doped fiber laser using a novel micro-optical waveguide on microactuating platform light modulator
Q-switching of Yb 3+ -doped fiber laser using a novel micro-optical waveguide on microactuating platform light modulator Yunsong Joeng 1, Youngbok Kim 1, Andreas Liem 2, Klaus Moerl 3, Sven Hoefer 2, Andreas
More informationOptically switched erbium fibre laser using a tunable fibre-bragg grating
Optically switched erbium fibre laser using a tunable fibre-bragg grating Robert J. Williams, * Nemanja Jovanovic, Graham D. Marshall and Michael J. Withford. Centre for Ultrahigh bandwidth Devices for
More informationOptical fiber-fault surveillance for passive optical networks in S-band operation window
Optical fiber-fault surveillance for passive optical networks in S-band operation window Chien-Hung Yeh 1 and Sien Chi 2,3 1 Transmission System Department, Computer and Communications Research Laboratories,
More informationWavelength switching using multicavity semiconductor laser diodes
Wavelength switching using multicavity semiconductor laser diodes A. P. Kanjamala and A. F. J. Levi Department of Electrical Engineering University of Southern California Los Angeles, California 989-1111
More informationA broadband fiber ring laser technique with stable and tunable signal-frequency operation
A broadband fiber ring laser technique with stable and tunable signal-frequency operation Chien-Hung Yeh 1 and Sien Chi 2, 3 1 Transmission System Department, Computer & Communications Research Laboratories,
More informationIntroduction Fundamentals of laser Types of lasers Semiconductor lasers
ECE 5368 Introduction Fundamentals of laser Types of lasers Semiconductor lasers Introduction Fundamentals of laser Types of lasers Semiconductor lasers How many types of lasers? Many many depending on
More informationUltra-short distributed Bragg reflector fiber laser for sensing applications
Ultra-short distributed Bragg reflector fiber laser for sensing applications Yang Zhang 2, Bai-Ou Guan 1,2,*, and Hwa-Yaw Tam 3 1 Institute of Photonics Technology, Jinan University, Guangzhou 510632,
More informationMitigation of Self-Pulsing in High Power Pulsed Fiber Lasers
Mitigation of Self-Pulsing in High Power Pulsed Fiber Lasers Yusuf Panbiharwala, Deepa Venkitesh, Balaji Srinivasan* Department of Electrical Engineering, Indian Institute of Technology Madras. *Email
More informationMulti-wavelength laser generation with Bismuthbased Erbium-doped fiber
Multi-wavelength laser generation with Bismuthbased Erbium-doped fiber H. Ahmad 1, S. Shahi 1 and S. W. Harun 1,2* 1 Photonics Research Center, University of Malaya, 50603 Kuala Lumpur, Malaysia 2 Department
More informationLinear cavity erbium-doped fiber laser with over 100 nm tuning range
Linear cavity erbium-doped fiber laser with over 100 nm tuning range Xinyong Dong, Nam Quoc Ngo *, and Ping Shum Network Technology Research Center, School of Electrical & Electronics Engineering, Nanyang
More informationAll-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser
International Conference on Logistics Engineering, Management and Computer Science (LEMCS 2014) All-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser Shengxiao
More informationCONTROLLABLE WAVELENGTH CHANNELS FOR MULTIWAVELENGTH BRILLOUIN BISMUTH/ERBIUM BAS-ED FIBER LASER
Progress In Electromagnetics Research Letters, Vol. 9, 9 18, 29 CONTROLLABLE WAVELENGTH CHANNELS FOR MULTIWAVELENGTH BRILLOUIN BISMUTH/ERBIUM BAS-ED FIBER LASER H. Ahmad, M. Z. Zulkifli, S. F. Norizan,
More informationOptical Fibers p. 1 Basic Concepts p. 1 Step-Index Fibers p. 2 Graded-Index Fibers p. 4 Design and Fabrication p. 6 Silica Fibers p.
Preface p. xiii Optical Fibers p. 1 Basic Concepts p. 1 Step-Index Fibers p. 2 Graded-Index Fibers p. 4 Design and Fabrication p. 6 Silica Fibers p. 6 Plastic Optical Fibers p. 9 Microstructure Optical
More informationA tunable and switchable single-longitudinalmode dual-wavelength fiber laser with a simple linear cavity
A tunable and switchable single-longitudinalmode dual-wavelength fiber laser with a simple linear cavity Xiaoying He, 1 Xia Fang, 1 Changrui Liao, 1 D. N. Wang, 1,* and Junqiang Sun 2 1 Department of Electrical
More informationA silicon avalanche photodetector fabricated with standard CMOS technology with over 1 THz gain-bandwidth product
A silicon avalanche photodetector fabricated with standard CMOS technology with over 1 THz gain-bandwidth product Myung-Jae Lee and Woo-Young Choi* Department of Electrical and Electronic Engineering,
More informationDBR based passively mode-locked 1.5m semiconductor laser with 9 nm tuning range Moskalenko, V.; Williams, K.A.; Bente, E.A.J.M.
DBR based passively mode-locked 1.5m semiconductor laser with 9 nm tuning range Moskalenko, V.; Williams, K.A.; Bente, E.A.J.M. Published in: Proceedings of the 20th Annual Symposium of the IEEE Photonics
More informationSingle mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter
Indian Journal of Pure & Applied Physics Vol. 53, September 2015, pp. 579-584 Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter N F Razak* 1, H Ahmad 2, M Z Zulkifli 2,
More informationContinuum White Light Generation. WhiteLase: High Power Ultrabroadband
Continuum White Light Generation WhiteLase: High Power Ultrabroadband Light Sources Technology Ultrafast Pulses + Fiber Laser + Non-linear PCF = Spectral broadening from 400nm to 2500nm Ultrafast Fiber
More informationA 100 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 1120 nm
A 1 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 112 nm Jianhua Wang, 1,2 Jinmeng Hu, 1 Lei Zhang, 1 Xijia Gu, 3 Jinbao Chen, 2 and Yan Feng 1,* 1 Shanghai Key Laboratory of Solid
More informationColorless Amplified WDM-PON Employing Broadband Light Source Seeded Optical Sources and Channel-by-Channel Dispersion Compensators for >100 km Reach
Journal of the Optical Society of Korea Vol. 18, No. 5, October 014, pp. 46-441 ISSN: 16-4776(Print) / ISSN: 09-6885(Online) DOI: http://dx.doi.org/10.807/josk.014.18.5.46 Colorless Amplified WDM-PON Employing
More informationDESIGN AND CHARACTERIZATION OF HIGH PERFORMANCE C AND L BAND ERBIUM DOPED FIBER AMPLIFIERS (C,L-EDFAs)
DESIGN AND CHARACTERIZATION OF HIGH PERFORMANCE C AND L BAND ERBIUM DOPED FIBER AMPLIFIERS (C,L-EDFAs) Ahmet Altuncu Arif Başgümüş Burçin Uzunca Ekim Haznedaroğlu e-mail: altuncu@dumlupinar.edu.tr e-mail:
More informationTiming Noise Measurement of High-Repetition-Rate Optical Pulses
564 Timing Noise Measurement of High-Repetition-Rate Optical Pulses Hidemi Tsuchida National Institute of Advanced Industrial Science and Technology 1-1-1 Umezono, Tsukuba, 305-8568 JAPAN Tel: 81-29-861-5342;
More informationA new picosecond Laser pulse generation method.
PULSE GATING : A new picosecond Laser pulse generation method. Picosecond lasers can be found in many fields of applications from research to industry. These lasers are very common in bio-photonics, non-linear
More informationOptical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Photonics Group Department of Micro- and Nanosciences Aalto University
Photonics Group Department of Micro- and Nanosciences Aalto University Optical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Last Lecture Topics Course introduction Ray optics & optical
More informationDevelopment of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers
Development of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers Shun-ichi Matsushita*, * 2, Taizo Miyato*, * 2, Hiroshi Hashimoto*, * 2, Eisuke Otani* 2, Tatsuji Uchino* 2, Akira Fujisaki*,
More informationStabilisation of Linear-cavity Fibre Laser Using a Saturable Absorber
Edith Cowan University Research Online ECU Publications 2011 2011 Stabilisation of Linear-cavity Fibre Laser Using a Saturable Absorber David Michel Edith Cowan University Feng Xiao Edith Cowan University
More informationTesting with Femtosecond Pulses
Testing with Femtosecond Pulses White Paper PN 200-0200-00 Revision 1.3 January 2009 Calmar Laser, Inc www.calmarlaser.com Overview Calmar s femtosecond laser sources are passively mode-locked fiber lasers.
More informationSupplementary Figures
Supplementary Figures Supplementary Figure 1: Mach-Zehnder interferometer (MZI) phase stabilization. (a) DC output of the MZI with and without phase stabilization. (b) Performance of MZI stabilization
More informationCoherent addition of fiber lasers by use of a fiber coupler
Coherent addition of fiber lasers by use of a fiber coupler Akira Shirakawa, Tomoharu Saitou, Tomoki Sekiguchi, and Ken-ichi Ueda Institute for Laser Science, University of Electro-Communications akira@ils.uec.ac.jp,
More informationThermal treatment method for tuning the lasing wavelength of a DFB fiber laser using coil heaters
Thermal treatment method for tuning the lasing wavelength of a DFB fiber laser using coil heaters Ha Huy Thanh and Bui Trung Dzung National Center for Technology Progress (NACENTECH) C6-Thanh Xuan Bac-Hanoi-Vietnam
More informationtaccor Optional features Overview Turn-key GHz femtosecond laser
taccor Turn-key GHz femtosecond laser Self-locking and maintaining Stable and robust True hands off turn-key system Wavelength tunable Integrated pump laser Overview The taccor is a unique turn-key femtosecond
More informationRECENTLY, studies have begun that are designed to meet
838 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 43, NO. 9, SEPTEMBER 2007 Design of a Fiber Bragg Grating External Cavity Diode Laser to Realize Mode-Hop Isolation Toshiya Sato Abstract Recently, a unique
More informationPERFORMANCE OF PHOTODIGM S DBR SEMICONDUCTOR LASERS FOR PICOSECOND AND NANOSECOND PULSING APPLICATIONS
PERFORMANCE OF PHOTODIGM S DBR SEMICONDUCTOR LASERS FOR PICOSECOND AND NANOSECOND PULSING APPLICATIONS By Jason O Daniel, Ph.D. TABLE OF CONTENTS 1. Introduction...1 2. Pulse Measurements for Pulse Widths
More informationThe Theta Laser A Low Noise Chirped Pulse Laser. Dimitrios Mandridis
CREOL Affiliates Day 2011 The Theta Laser A Low Noise Chirped Pulse Laser Dimitrios Mandridis dmandrid@creol.ucf.edu April 29, 2011 Objective: Frequency Swept (FM) Mode-locked Laser Develop a frequency
More informationSingle-Frequency, 2-cm, Yb-Doped Silica-Fiber Laser
Single-Frequency, 2-cm, Yb-Doped Silica-Fiber Laser W. Guan and J. R. Marciante University of Rochester Laboratory for Laser Energetics The Institute of Optics Frontiers in Optics 2006 90th OSA Annual
More informationTunable single frequency fiber laser based on FP-LD injection locking
Tunable single frequency fiber laser based on FP-LD injection locking Aiqin Zhang, Xinhuan Feng, * Minggui Wan, Zhaohui Li, and Bai-ou Guan Institute of Photonics Technology, Jinan University, Guangzhou,
More informationStable dual-wavelength oscillation of an erbium-doped fiber ring laser at room temperature
Stable dual-wavelength oscillation of an erbium-doped fiber ring laser at room temperature Donghui Zhao.a, Xuewen Shu b, Wei Zhang b, Yicheng Lai a, Lin Zhang a, Ian Bennion a a Photonics Research Group,
More informationOptical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers
Optical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers Keisuke Kasai a), Jumpei Hongo, Masato Yoshida, and Masataka Nakazawa Research Institute of
More informationActively mode-locked Raman fiber laser
Actively mode-locked Raman fiber laser Xuezong Yang, 1,2 Lei Zhang, 1 Huawei Jiang, 1,2 Tingwei Fan, 1,2 and Yan Feng 1,* 1 Shanghai Institute of Optics and fine Mechanics, Chinese Academy of Sciences,
More informationVertical External Cavity Surface Emitting Laser
Chapter 4 Optical-pumped Vertical External Cavity Surface Emitting Laser The booming laser techniques named VECSEL combine the flexibility of semiconductor band structure and advantages of solid-state
More informationRADIO-OVER-FIBER TRANSPORT SYSTEMS BASED ON DFB LD WITH MAIN AND 1 SIDE MODES INJECTION-LOCKED TECHNIQUE
Progress In Electromagnetics Research Letters, Vol. 7, 25 33, 2009 RADIO-OVER-FIBER TRANSPORT SYSTEMS BASED ON DFB LD WITH MAIN AND 1 SIDE MODES INJECTION-LOCKED TECHNIQUE H.-H. Lu, C.-Y. Li, C.-H. Lee,
More informationHigh-power semiconductor lasers for applications requiring GHz linewidth source
High-power semiconductor lasers for applications requiring GHz linewidth source Ivan Divliansky* a, Vadim Smirnov b, George Venus a, Alex Gourevitch a, Leonid Glebov a a CREOL/The College of Optics and
More informationCommunication using Synchronization of Chaos in Semiconductor Lasers with optoelectronic feedback
Communication using Synchronization of Chaos in Semiconductor Lasers with optoelectronic feedback S. Tang, L. Illing, J. M. Liu, H. D. I. barbanel and M. B. Kennel Department of Electrical Engineering,
More informationPhotonic Generation of Millimeter-Wave Signals With Tunable Phase Shift
Photonic Generation of Millimeter-Wave Signals With Tunable Phase Shift Volume 4, Number 3, June 2012 Weifeng Zhang, Student Member, IEEE Jianping Yao, Fellow, IEEE DOI: 10.1109/JPHOT.2012.2199481 1943-0655/$31.00
More informationIndex Terms WDM, multi-wavelength Erbium Doped fiber laser.
A Multi-wavelength Erbium Doped Fiber Laser for Free Space Optical Communication link S. Qhumayo, R. Martinez Manuel and J.J. M. Kaboko Photonics Research Group, Department of Electrical and Electronic
More informationNovel Dual-mode locking semiconductor laser for millimetre-wave generation
Novel Dual-mode locking semiconductor laser for millimetre-wave generation P. Acedo 1, C. Roda 1, H. Lamela 1, G. Carpintero 1, J.P. Vilcot 2, S. Garidel 2 1 Grupo de Optoelectrónica y Tecnología Láser,
More informationMode-locking and frequency beating in. compact semiconductor lasers. Michael J. Strain
Mode-locking and frequency beating in Michael J. Strain Institute of Photonics Dept. of Physics University of Strathclyde compact semiconductor lasers Outline Pulsed lasers Mode-locking basics Semiconductor
More informationQuantum-Well Semiconductor Saturable Absorber Mirror
Chapter 3 Quantum-Well Semiconductor Saturable Absorber Mirror The shallow modulation depth of quantum-dot saturable absorber is unfavorable to increasing pulse energy and peak power of Q-switched laser.
More informationUtilizing Self-Seeding RSOA with Faraday Rotator Mirror for Colorless Access Network
Utilizing Self-Seeding RSOA with Faraday Rotator Mirror for Colorless Access Network Yu-Fu Wu a, Jinu-Yu Sung a, and Chi-Wai Chow a, and Chien-Hung Yeh* b,c a Department of Photonics and Institute of Electro-Optical
More informationDependence of stimulated Brillouin scattering in pulsed fiber amplifier on signal linewidth, pulse duration, and repetition rate
Dependence of stimulated Brillouin scattering in pulsed fiber amplifier on signal linewidth, pulse duration, and repetition rate Rongtao Su ( Â ), Pu Zhou ( ), Xiaolin Wang ( ), Hu Xiao ( Ñ), and Xiaojun
More informationHigh-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W
High-frequency tuning of high-powered DFB MOPA system with diffraction limited power up to 1.5W Joachim Sacher, Richard Knispel, Sandra Stry Sacher Lasertechnik GmbH, Hannah Arendt Str. 3-7, D-3537 Marburg,
More informationDifferential measurement scheme for Brillouin Optical Correlation Domain Analysis
Differential measurement scheme for Brillouin Optical Correlation Domain Analysis Ji Ho Jeong, 1,2 Kwanil Lee, 1,4 Kwang Yong Song, 3,* Je-Myung Jeong, 2 and Sang Bae Lee 1 1 Center for Opto-Electronic
More informationPhotonics (OPTI 510R 2017) - Final exam. (May 8, 10:30am-12:30pm, R307)
Photonics (OPTI 510R 2017) - Final exam (May 8, 10:30am-12:30pm, R307) Problem 1: (30pts) You are tasked with building a high speed fiber communication link between San Francisco and Tokyo (Japan) which
More informationRing cavity tunable fiber laser with external transversely chirped Bragg grating
Ring cavity tunable fiber laser with external transversely chirped Bragg grating A. Ryasnyanskiy, V. Smirnov, L. Glebova, O. Mokhun, E. Rotari, A. Glebov and L. Glebov 2 OptiGrate, 562 South Econ Circle,
More informationMultiwavelength Single-Longitudinal-Mode Ytterbium-Doped Fiber Laser. Citation IEEE Photon. Technol. Lett., 2013, v. 25, p.
Title Multiwavelength Single-Longitudinal-Mode Ytterbium-Doped Fiber Laser Author(s) ZHOU, Y; Chui, PC; Wong, KKY Citation IEEE Photon. Technol. Lett., 2013, v. 25, p. 385-388 Issued Date 2013 URL http://hdl.handle.net/10722/189009
More informationDemonstration of directly modulated silicon Raman laser
Demonstration of directly modulated silicon Raman laser Ozdal Boyraz and Bahram Jalali Optoelectronic Circuits and Systems Laboratory University of California, Los Angeles Los Angeles, CA 995-1594 jalali@ucla.edu
More informationOptoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links
Optoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links Bruno Romeira* a, José M. L Figueiredo a, Kris Seunarine b, Charles N. Ironside b, a Department of Physics, CEOT,
More informationBasic concepts. Optical Sources (b) Optical Sources (a) Requirements for light sources (b) Requirements for light sources (a)
Optical Sources (a) Optical Sources (b) The main light sources used with fibre optic systems are: Light-emitting diodes (LEDs) Semiconductor lasers (diode lasers) Fibre laser and other compact solid-state
More informationChannel wavelength selectable singleõdualwavelength erbium-doped fiber ring laser
Channel wavelength selectable singleõdualwavelength erbium-doped fiber ring laser Tong Liu Yeng Chai Soh Qijie Wang Nanyang Technological University School of Electrical and Electronic Engineering Nanyang
More informationLoop Mirror Multi-wavelength Brillouin Fiber Laser Utilizing Semiconductor Optical Amplifier and Fiber Bragg Grating
Loop Mirror Multi-wavelength Brillouin Fiber Laser Utilizing Semiconductor Optical Amplifier and Fiber Bragg Grating N. A. Idris 1,2,*, N. A. M. Ahmad Hambali 1,2, M.H.A. Wahid 1,2, N. A. Ariffin 1,2,
More informationHigh average power picosecond pulse generation from a thulium-doped all-fiber MOPA system
High average power picosecond pulse generation from a thulium-doped all-fiber MOPA system Jiang Liu, Qian Wang, and Pu Wang * National Center of Laser Technology, Institute of Laser Engineering, Beijing
More informationTo generate a broadband light source by using mutually injection-locked Fabry-Perot laser diodes
To generate a broadband light source by using mutually injection-locked Fabry-Perot laser diodes Cheng-Ling Ying 1, Yu-Chieh Chi 2, Chia-Chin Tsai 3, Chien-Pen Chuang 3, and Hai-Han Lu 2a) 1 Department
More informationMultiwatts narrow linewidth fiber Raman amplifiers
Multiwatts narrow linewidth fiber Raman amplifiers Yan Feng *, Luke Taylor, and Domenico Bonaccini Calia European Southern Observatory, Karl-Schwarzschildstr., D-878 Garching, Germany * Corresponding author:
More informationHIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS
HIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS P. Weßels for the LZH high power laser development team Laser Zentrum Hannover, Germany 23.05.2011 OUTLINE Requirements on lasers for
More informationModBox - Spectral Broadening Unit
ModBox - Spectral Broadening Unit The ModBox Family The ModBox systems are a family of turnkey optical transmitters and external modulation benchtop units for digital and analog transmission, pulsed and
More informationThe Development of a High Quality and a High Peak Power Pulsed Fiber Laser With a Flexible Tunability of the Pulse Width
The Development of a High Quality and a High Peak Power Pulsed Fiber Laser With a Flexible Tunability of the Pulse Width Ryo Kawahara *1, Hiroshi Hashimoto *1, Jeffrey W. Nicholson *2, Eisuke Otani *1,
More informationSingle-longitudinal mode laser structure based on a very narrow filtering technique
Single-longitudinal mode laser structure based on a very narrow filtering technique L. Rodríguez-Cobo, 1,* M. A. Quintela, 1 S. Rota-Rodrigo, 2 M. López-Amo 2 and J. M. López-Higuera 1 1 Photonics Engineering
More information22-Channel Capacity of 2.5Gbit/s DWDM-PON ONU Transmitter by Direct-Modularly Side-Mode Injection Locked FPLD
22-Channel Capacity of 2.5Gbit/s DWDM-PON ONU Transmitter by Direct-Modularly Side-Mode Injection Locked FPLD Yu-Sheng Liao a, Yung-Jui Chen b, and Gong-Ru Lin c* a Department of Photonics & Institute
More informationTransient Control in Dynamically Reconfigured Networks with Cascaded Erbium Doped Fiber Amplifiers
Transient Control in Dynamically Reconfigured Networks with Cascaded Erbium Doped Fiber Amplifiers Lei Zong, Ting Wang lanezong@nec-labs.com NEC Laboratories America, Princeton, New Jersey, USA WOCC 2007
More informationGain-clamping techniques in two-stage double-pass L-band EDFA
PRAMANA c Indian Academy of Sciences Vol. 66, No. 3 journal of March 2006 physics pp. 539 545 Gain-clamping techniques in two-stage double-pass L-band EDFA S W HARUN 1, N Md SAMSURI 2 and H AHMAD 2 1 Faculty
More informationHigh order cascaded Raman random fiber laser with high spectral purity
Vol. 6, No. 5 5 Mar 18 OPTICS EXPRESS 575 High order cascaded Raman random fiber laser with high spectral purity JINYAN DONG,1, LEI ZHANG,1, HUAWEI JIANG,1, XUEZONG YANG,1, WEIWEI PAN,1, SHUZHEN CUI,1
More informationLecture 1: Course Overview. Rajeev J. Ram
Lecture 1: Course Overview Rajeev J. Ram Office: 36-491 Telephone: X3-4182 Email: rajeev@mit.edu Syllabus Basic concepts Advanced concepts Background: p-n junctions Photodetectors Modulators Optical amplifiers
More informationLong-distance fiber grating sensor system using a fiber ring laser with EDWA and SOA
Optics Communications 252 (2005) 127 131 www.elsevier.com/locate/optcom Long-distance fiber grating sensor system using a fiber ring laser with EDWA and SOA Peng-Chun Peng a, *, Kai-Ming Feng b, Wei-Ren
More informationEDFA WDM Optical Network using GFF
EDFA WDM Optical Network using GFF Shweta Bharti M. Tech, Digital Communication, (Govt. Women Engg. College, Ajmer), Rajasthan, India ABSTRACT This paper describes the model and simulation of EDFA WDM
More informationHigh-power operation of Tm:YLF, Ho:YLF and Er:YLF lasers
High-power operation of Tm:YLF, Ho:YLF and Er:YLF lasers Peter F. Moulton Solid State and Diode Laser Technology Review 2003 20 May Albuquerque, NM Outline High-power Tm:YLF-pumped Ho:YLF laser ZGP OPO
More informationOpto-VLSI-based reconfigurable photonic RF filter
Research Online ECU Publications 29 Opto-VLSI-based reconfigurable photonic RF filter Feng Xiao Mingya Shen Budi Juswardy Kamal Alameh This article was originally published as: Xiao, F., Shen, M., Juswardy,
More informationGigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration
22 Gigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration Jun-Hyuk Seo, and Woo-Young Choi Department of Electrical and
More informationHow to build an Er:fiber femtosecond laser
How to build an Er:fiber femtosecond laser Daniele Brida 17.02.2016 Konstanz Ultrafast laser Time domain : pulse train Frequency domain: comb 3 26.03.2016 Frequency comb laser Time domain : pulse train
More informationGeneration and evolution of mode-locked noiselike square-wave pulses in a large-anomalousdispersion Er-doped ring fiber laser
Generation and evolution of mode-locked noiselike square-wave pulses in a large-anomalousdispersion Er-doped ring fiber laser Jun Liu, 1 Yu Chen, 1 Pinghua Tang, 2 Changwen Xu, 1 Chujun Zhao, 1,2,* Han
More informationMechanism of intrinsic wavelength tuning and sideband asymmetry in a passively mode-locked soliton fiber ring laser
28 J. Opt. Soc. Am. B/Vol. 17, No. 1/January 2000 Man et al. Mechanism of intrinsic wavelength tuning and sideband asymmetry in a passively mode-locked soliton fiber ring laser W. S. Man, H. Y. Tam, and
More informationDispersion engineered As 2 S 3 planar waveguides for broadband four-wave mixing based wavelength conversion of 40 Gb/s signals
Dispersion engineered As 2 S 3 planar waveguides for broadband four-wave mixing based wavelength conversion of 40 Gb/s signals Feng Luan, 1 Mark D. Pelusi, 1 Michael R.E. Lamont, 1 Duk-Yong Choi, 2 Steve
More informationStudy of Multiwavelength Fiber Laser in a Highly Nonlinear Fiber
Study of Multiwavelength Fiber Laser in a Highly Nonlinear Fiber I. H. M. Nadzar 1 and N. A.Awang 1* 1 Faculty of Science, Technology and Human Development, Universiti Tun Hussein Onn Malaysia, Johor,
More informationSensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor by lowering linear birefringence
Sensitivity enhancement of Faraday effect based heterodyning fiber laser magnetic field sensor by lowering linear birefringence Linghao Cheng, Jianlei Han, Long Jin, Zhenzhen Guo, and Bai-Ou Guan * Institute
More informationCSO/CTB PERFORMANCE IMPROVEMENT BY USING FABRY-PEROT ETALON AT THE RECEIVING SITE
Progress In Electromagnetics Research Letters, Vol. 6, 107 113, 2009 CSO/CTB PERFORMANCE IMPROVEMENT BY USING FABRY-PEROT ETALON AT THE RECEIVING SITE S.-J. Tzeng, H.-H. Lu, C.-Y. Li, K.-H. Chang,and C.-H.
More informationDispersion measurement in optical fibres over the entire spectral range from 1.1 mm to 1.7 mm
15 February 2000 Ž. Optics Communications 175 2000 209 213 www.elsevier.comrlocateroptcom Dispersion measurement in optical fibres over the entire spectral range from 1.1 mm to 1.7 mm F. Koch ), S.V. Chernikov,
More informationQ-switched resonantly diode-pumped Er:YAG laser
Q-switched resonantly diode-pumped Er:YAG laser Igor Kudryashov a) and Alexei Katsnelson Princeton Lightwave Inc., 2555 US Route 130, Cranbury, New Jersey, 08512 ABSTRACT In this work, resonant diode pumping
More informationHigh-Coherence Wavelength Swept Light Source
Kenichi Nakamura, Masaru Koshihara, Takanori Saitoh, Koji Kawakita [Summary] Optical technologies that have so far been restricted to the field of optical communications are now starting to be applied
More informationRecent Progress in Pulsed Optical Synchronization Systems
FLS 2010 Workshop March 4 th, 2010 Recent Progress in Pulsed Optical Synchronization Systems Franz X. Kärtner Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics,
More informationLaser Diode. Photonic Network By Dr. M H Zaidi
Laser Diode Light emitters are a key element in any fiber optic system. This component converts the electrical signal into a corresponding light signal that can be injected into the fiber. The light emitter
More informationA 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating
LETTER IEICE Electronics Express, Vol.14, No.19, 1 10 A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 µm Koudai Harako a), Masato Yoshida, Toshihiko Hirooka, and Masataka
More informationWaveguide-based single-pixel up-conversion infrared spectrometer
Waveguide-based single-pixel up-conversion infrared spectrometer Qiang Zhang 1,2, Carsten Langrock 1, M. M. Fejer 1, Yoshihisa Yamamoto 1,2 1. Edward L. Ginzton Laboratory, Stanford University, Stanford,
More informationOptical RI sensor based on an in-fiber Bragg grating. Fabry-Perot cavity embedded with a micro-channel
Optical RI sensor based on an in-fiber Bragg grating Fabry-Perot cavity embedded with a micro-channel Zhijun Yan *, Pouneh Saffari, Kaiming Zhou, Adedotun Adebay, Lin Zhang Photonic Research Group, Aston
More information