Synchronization in Chaotic Vertical-Cavity Surface-Emitting Semiconductor Lasers
|
|
- Toby Lawrence
- 5 years ago
- Views:
Transcription
1 Synchronization in Chaotic Vertical-Cavity Surface-Emitting Semiconductor Lasers Natsuki Fujiwara and Junji Ohtsubo Faculty of Engineering, Shizuoka University, Johoku, Hamamatsu, Japan Abstract Chaos synchronization in polarization selected mutually injected Vertical-Cavity Surface-Emitting Semiconductor Lasers (VCSELs) is experimentally investigated at near lasing threshold. The two lasers synchronize in x- or y- polarization mode (x is the orthogonal mode to the y-polarization mode that is the direction along the optical axis of a laser material) depending on the injected polarization components. Keyword: VCSELs, chaos, injection locking, polarization 1. Introduction Vertical-cavity surface emitting lasers (VCSELs) have been studied extensively in the past few years because of several useful characteristics which make them very attractive for applications. Indeed, they show many advantages with respect to the standard semiconductor architectures, such as their small size and the possibility to connect them directly to optical fibers. They also present a very low threshold, high quantum efficiency, and can exhibit single longitudinal mode operation. Whereas, despite their high facet reflectivity (more than 99%), VCSELs are also sensitive to external optical feedback and optical injection like edge-emitting semiconductor lasers. 1,2 Chaos synchronization has been intensively investigated in various nonlinear dynamical systems for its potential applications in chaotic communications. 3-5 Up to now, we have examined various schemes of synchronization under mutually injected configuration of VCSELs at low-frequency fluctuation (LFF) regimes. 6 We observed chaotic synchronization of the laser outputs. In chaos synchronization, the polarization modes play the important role. We observed three typical cases of the synchronization in the mutual systems. One is the case of chaos synchronization under the x polarization modes (x-mode is the orthogonal to the y-mode which has the direction along the optical axis of the laser material). In this case, the y-modes also synchronize with each other due to anti-correlation oscillations, which are typical dynamic characteristics of VCSELs. The second case is synchronization of the y-modes under chaos synchronization and the x-modes synchronize by the anti-correlation oscillations. The third case is synchronization both for the x- and y-modes under chaos synchronization. In order to investigate in detail, we examined experiment that polarization selected mutually injection.
2 2. Experimental The experimental setup is shown in Fig. 1. The VCSELs (AXT VY-TI11-4FO1 VCSELs) used in the experiments were oscillated at a wavelength of 780 nm and a maximum optical power of 10 mw. The lasers oscillated at y-polarization mode just above the threshold (y is the direction along the optical axis of a laser material). The x- polarization mode is here defined as the counterpart oscillation of the y-polarization mode. With the increase of the injection current, the output power of the x-polarization mode increased and had a compatible power with that of the y- polarization mode in our experiments although the x-polarization mode had always lower than that of the y-polarization mode. The two lasers were mutually coupled through a neutral density filter NDF to control the injection ratios, thus VCSEL1 was injected by VCSEL2 and VCSEL2 was also injected by VCSEL1. The bias injection currents of the two lasers were controlled by stabilized current source drivers, and the laser temperature was stabilized by automatic temperature control circuits. The two lasers used in our experiments had similar values of the device parameters with each other. In spite of the similar device parameters, each VCSEL showed quite different characteristics of the oscillation for the threshold injection current and the L-I characteristics including x- and y-polarization outputs. The two lasers were mutually coupled through a polarization beam splitter PBS to select the injection polarization, thus VCSEL1 was injected by VCSEL2 was also injected by VCSEL1. Fig.1 Schematic diagram of mutually injected VCSELs. PBS: Polarization Beam Splitter, BS: Beam Splitter, OI: Optical Isolator, PL: Polarization Filter
3 The free-running threshold currents of VCSEL1 and VCSEL2 were 6.2 and 6.4 ma at that 25.8, respectively. The injection currents for VCSEL1 and VCSEL2 were biased slightly above threshold current. At the bias injection current, VCSEL1 showed a very low output power of the x-polarization mode and oscillated at almost only y- polarization mode. On the other hand, comparable output powers for the y- and x-polarization modes were observed in VCSEL2. Under these conditions, the lasers were oscillated at their lower order spatial modes (LP 01 and LP 11 mode). Each spatial mode was stable at solitary oscillation. The two lasers were separated 120 cm in space. Therefore, the coupling time of light between the two lasers was τ=4 ns. The outputs from the two lasers were detected by a high-speed photo-detector (NEW FOCUS 1537M-LF: bandwidth of 6.0 GHz). Chaotic waveforms were analyzed by a RF spectrum analyzer (HP 8595E: bandwidth of 6.5 GHz) and a fast digital oscilloscope (HP 54845A: bandwidth of 1.5 GHz). Also, the optical outputs were analyzed by an optical spectrum analyzer (ADVANTEST Q8344A, maximum resolution of 0.05 nm), a wavelength meter (ADVANTEST QT8325, maximum resolution of nm), and a Fabry-Perot spectrometer (free spectral range of 10GHz). 3. Results and discussion We first show the result of mutually injection of the y-polarization components. The data were obtained for bias currents of 6.9 ma (1.11I th, where I th is the laser threshold current) for the VCSEL1 and 7.1 ma (1.15I th ) for the VCSEL2,wheres the substrate temperatures were 25.5 and Figure 2 is time series of the y-polarization components for the two laser outputs. We can see LFFs in the waveforms, which have been recently observed in VCSELs with optical feedback; namely, sudden power dropouts and stepwise power recoveries after the dropouts. The time duration of each step in the power recovery process is coincident with the round-trip time 2τ of light in the mutual optical injection system. In this figure, VCSEL1 was a leader to VCSEL2 and the time lag between the waveforms was to be read 4 ns, which was equal to the coupling time τ of light between the two lasers. Figure 3 is correlation plot between the two waveforms. The correlation coefficient was Since optical power of x-polarization components were too weak, time series waveforms were undetectable. But we can expect that the x-polarization mode of each VCSELs were oscillated at out-of-phase with the y-polarization component.
4 VCSEL2 VCSEL1 Fig. 2 Time series of y-polarization mode at synchronization. Fig. 3 Correlation plot of y-polarization. Figure 4 shows the optical spectra at solitary and mutually coupled oscillations observed by the optical spectrum analyzer. Table1 is a summary of the data analyzed by wavelength meter and power meter. These data correspond to the laser oscillations in Fig. 2. The upper and lower traces in Fig. 4 are the spectra at solitary and optically coupled oscillations, respectively. Each peak optical power of the observed spectrum was normalized to the total oscillation intensity. After the optical coupling, the power of y-components were amplified, x-polarization components were reduced. The wavelengths of the both lasers were shifted by the mutual optical injection. After optical coupling, the main oscillation wavelengths of the y-polarization components coincided with each other at nm. The wavelengths of the y-polarization modes were locked with each other at nm under mutual optical injection, while the x-components had different wavelengths. It was considered that the y-polarization mode of VCSEL2 was locked to that of VCSEL1 and the two lasers synchronized at that wavelength. We also studied mutually injection of the x-polarization components. The chaotic synchronization was obtained for bias currents of 7.9 ma (1.26Ith) for the VCSEL1 and 7.6 ma (1.14Ith) for the VCSEL2,wheres the substrate temperatures were 25.5 and Figure 5 is time series of the y-polarization components for the two laser outputs. We can see chaotic waveforms. In this case, VCSEL2 was a leader to VCSEL1 and the time lag between the waveforms was to be read 4 ns. The correlation coefficient was (Fig. 6). Although the optical powers of the x-polarization components were amplified by optical injection, the optical powers were insufficiency to detect time series waveforms.
5 Fig. 4 Optical spectra of laser oscillation for (a) x-and (b) y-polarization modes. Solid lines show the spectra for VCSEL1 and the broken lines for VCSEL2. Table 1 Summary of wavelength and power. Figure 7 shows the optical spectra at solitary and mutually coupled oscillations observed by the optical spectrum analyzer. Table2 is a summary of the data analyzed by wavelength meter and power meter. These data correspond to the laser oscillations in Fig. 3. Each peak optical power of the observed spectrum was normalized to the total oscillation intensity. Before optical coupling, x-polarization had a very low power but it showed significant power after optical injection. On the other hand, y-polarization power is reduced. The wavelengths of the both lasers were
6 shifted by the mutual optical injection. The wavelength difference between the x-components of two lasers at optical coupling was 0.006nm. On the other hand, the wavelength difference of the y-components was nm. It was considered that the x-polarization mode of VCSEL2 was locked to that of VCSEL1. VCSEL2 VCSEL1 Fig. 5 Time series of y-polarization mode at synchronization. Fig. 6 Fig. 7 Optical spectra of laser oscillation for (a) x-and (b) y-polarization modes. Solid lines show the spectra for VCSEL1 and the broken lines for VCSEL2. Correlation plot of y-polarization.
7 Table 2 Summary of wavelength and power. 4. Conclusion We have experimentally demonstrated synchronization of chaotic oscillations in polarization selected mutually injected VCSELs. In chaos synchronization in VCSELs, the polarization modes play an important role. If y-polarization components are injected, synchronization will occur in y-polarization components. At this time, the optical outputs of y- polarization mode of both VCSELs are amplified, on the other hands, the outputs of x-polarization mode decreases. When x-polarization components inject, there is same tendency: the x-polarization mode are injection-locked, x- polarization mode are amplified and y-polarization mode are decreased. Scheme of synchronization depends on the parameter conditions, such as bias injection current, and the experimental configurations. They also determine a leading (master) or lagging (slave) laser in the synchronization system. Although we have focused on the low-order mode, the qualitative nature of the results is expected to remain unaffected under multi-mode operation. Chaos synchronization is desirable in many applications such as high bit-rate secure telecommunications.
8 References [1] S. Jhiang, Z. Pan, M. Dagenais, R. A. Morgan, and K. Kojima, IEEE Photon. Technol. Lett. 6, 34 (1994). [2] N. Fujiwara, Y. Takiguchi, and J. Ohtsubo, Opt. Lett. 28, 896 (2003). [3] M. Sondermann, H. Bohnet, and T. Ackemann, Phys. Rev. E. 67, (R) (2003). [4] J. Ohtsubo, Progress in Optics 44, Ch. 1, Ed. E. Wolf (Elsevier Science B. V., Amsterdam, 2002). [5] J. Ohtsubo, IEEE J. Quantum. Electron. 38, 1141 (2002). [6] N. Fujiwara, Y. Takiguchi, and J. Ohtsubo, Opt. Lett. 28, 1677 (2003). J. Ohtsubo s address is tajohts@ipc.shizuoka.ac.jp.
Optical spectrum behaviour of a coupled laser system under chaotic synchronization conditions
J. Europ. Opt. Soc. Rap. Public. 8, 13054 (2013) www.jeos.org Optical spectrum behaviour of a coupled laser system under chaotic synchronization conditions I. R. Andrei ionut.andrei@inflpr.ro National
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 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 informationLecture 6 Fiber Optical Communication Lecture 6, Slide 1
Lecture 6 Optical transmitters Photon processes in light matter interaction Lasers Lasing conditions The rate equations CW operation Modulation response Noise Light emitting diodes (LED) Power Modulation
More informationTemporal coherence characteristics of a superluminescent diode system with an optical feedback mechanism
VI Temporal coherence characteristics of a superluminescent diode system with an optical feedback mechanism Fang-Wen Sheu and Pei-Ling Luo Department of Applied Physics, National Chiayi University, Chiayi
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 informationEnergy Transfer and Message Filtering in Chaos Communications Using Injection locked Laser Diodes
181 Energy Transfer and Message Filtering in Chaos Communications Using Injection locked Laser Diodes Atsushi Murakami* and K. Alan Shore School of Informatics, University of Wales, Bangor, Dean Street,
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 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 informationR. J. Jones Optical Sciences OPTI 511L Fall 2017
R. J. Jones Optical Sciences OPTI 511L Fall 2017 Semiconductor Lasers (2 weeks) Semiconductor (diode) lasers are by far the most widely used lasers today. Their small size and properties of the light output
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 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 informationCoherent power combination of two Masteroscillator-power-amplifier. semiconductor lasers using optical phase lock loops
Coherent power combination of two Masteroscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops Wei Liang, Naresh Satyan and Amnon Yariv Department of Applied Physics, MS
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 informationoptoel 2013 VIII REUNIÓN ESPAÑOLA DE Optoelectrónica Julio de 2013 Alcalá de Henares Madrid LIBRO DE COMUNICACIONES
optoel 213 VIII REUNIÓN ESPAÑOLA DE Optoelectrónica www.optoel213.fgua.es 1-12 Julio de 213 Alcalá de Henares Madrid LIBRO DE COMUNICACIONES Publicado por: Grupo de Ingeniería Fotónica Departamento de
More informationPerformance Characterization of High-Bit-Rate Optical Chaotic Communication Systems in a Back-to-Back Configuration
750 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 21, NO. 3, MARCH 2003 Performance Characterization of High-Bit-Rate Optical Chaotic Communication Systems in a Back-to-Back Configuration Dimitris Kanakidis, Apostolos
More informationMASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Electrical Engineering and Computer Science
Student Name Date MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Electrical Engineering and Computer Science 6.161 Modern Optics Project Laboratory Laboratory Exercise No. 6 Fall 2010 Solid-State
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 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 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 informationChapter 1 Introduction
Chapter 1 Introduction 1-1 Preface Telecommunication lasers have evolved substantially since the introduction of the early AlGaAs-based semiconductor lasers in the late 1970s suitable for transmitting
More informationMixed-mode dynamics in a semiconductor laser with two optical feedbacks
Mixed-mode dynamics in a semiconductor laser with two optical feedbacks b D.W. Sukow a, A. Gavrielides b, M.C. Hegg a, and J.L. Wright a adepartment of Physics and Engineering, Washington and Lee University,
More informationCHAPTER 5 FINE-TUNING OF AN ECDL WITH AN INTRACAVITY LIQUID CRYSTAL ELEMENT
CHAPTER 5 FINE-TUNING OF AN ECDL WITH AN INTRACAVITY LIQUID CRYSTAL ELEMENT In this chapter, the experimental results for fine-tuning of the laser wavelength with an intracavity liquid crystal element
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 information~r. PACKARD. The Use ofgain-switched Vertical Cavity Surface-Emitting Laser for Electro-Optic Sampling
r~3 HEWLETT ~r. PACKARD The Use ofgain-switched Vertical Cavity Surface-Emitting Laser for Electro-Optic Sampling Kok Wai Chang, Mike Tan, S. Y. Wang Koichiro Takeuchi* nstrument and Photonics Laboratory
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 informationLASER DIODE MODULATION AND NOISE
> 5' O ft I o Vi LASER DIODE MODULATION AND NOISE K. Petermann lnstitutfiir Hochfrequenztechnik, Technische Universitdt Berlin Kluwer Academic Publishers i Dordrecht / Boston / London KTK Scientific Publishers
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 informationMode analysis of Oxide-Confined VCSELs using near-far field approaches
Annual report 998, Dept. of Optoelectronics, University of Ulm Mode analysis of Oxide-Confined VCSELs using near-far field approaches Safwat William Zaki Mahmoud We analyze the transverse mode structure
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 informationHigh brightness semiconductor lasers M.L. Osowski, W. Hu, R.M. Lammert, T. Liu, Y. Ma, S.W. Oh, C. Panja, P.T. Rudy, T. Stakelon and J.E.
QPC Lasers, Inc. 2007 SPIE Photonics West Paper: Mon Jan 22, 2007, 1:20 pm, LASE Conference 6456, Session 3 High brightness semiconductor lasers M.L. Osowski, W. Hu, R.M. Lammert, T. Liu, Y. Ma, S.W. Oh,
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 informationUSING LASER DIODE INSTABILITIES FOR CHIP- SCALE STABLE FREQUENCY REFERENCES
USING LASER DIODE INSTABILITIES FOR CHIP- SCALE STABLE FREQUENCY REFERENCES T. B. Simpson, F. Doft Titan/Jaycor, 3394 Carmel Mountain Road, San Diego, CA 92121, USA W. M. Golding Code 8151, Naval Research
More informationHigh-Power Semiconductor Laser Amplifier for Free-Space Communication Systems
64 Annual report 1998, Dept. of Optoelectronics, University of Ulm High-Power Semiconductor Laser Amplifier for Free-Space Communication Systems G. Jost High-power semiconductor laser amplifiers are interesting
More informationA novel tunable diode laser using volume holographic gratings
A novel tunable diode laser using volume holographic gratings Christophe Moser *, Lawrence Ho and Frank Havermeyer Ondax, Inc. 85 E. Duarte Road, Monrovia, CA 9116, USA ABSTRACT We have developed a self-aligned
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 informationLongitudinal Multimode Dynamics in Monolithically Integrated Master Oscillator Power Amplifiers
Longitudinal Multimode Dynamics in Monolithically Integrated Master Oscillator Power Amplifiers Antonio PEREZ-SERRANO (1), Mariafernanda VILERA (1), Julien JAVALOYES (2), Jose Manuel G. TIJERO (1), Ignacio
More informationA CW seeded femtosecond optical parametric amplifier
Science in China Ser. G Physics, Mechanics & Astronomy 2004 Vol.47 No.6 767 772 767 A CW seeded femtosecond optical parametric amplifier ZHU Heyuan, XU Guang, WANG Tao, QIAN Liejia & FAN Dianyuan State
More informationIsolator-Free 840-nm Broadband SLEDs for High-Resolution OCT
Isolator-Free 840-nm Broadband SLEDs for High-Resolution OCT M. Duelk *, V. Laino, P. Navaretti, R. Rezzonico, C. Armistead, C. Vélez EXALOS AG, Wagistrasse 21, CH-8952 Schlieren, Switzerland ABSTRACT
More informationLASER Transmitters 1 OBJECTIVE 2 PRE-LAB
LASER Transmitters 1 OBJECTIVE Investigate the L-I curves and spectrum of a FP Laser and observe the effects of different cavity characteristics. Learn to perform parameter sweeps in OptiSystem. 2 PRE-LAB
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 informationOptical neuron using polarisation switching in a 1550nm-VCSEL
Optical neuron using polarisation switching in a 1550nm-VCSEL Antonio Hurtado,* Ian D. Henning, and Michael J. Adams School of Computer Science and Electronic Engineering, University of Essex, Wivenhoe
More informationVertical-cavity optical AND gate
Optics Communications 219 (2003) 383 387 www.elsevier.com/locate/optcom Vertical-cavity optical AND gate Pengyue Wen *, Michael Sanchez, Matthias Gross, Sadik Esener Electrical and Computer Engineering
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 informationModulation of light. Direct modulation of sources Electro-absorption (EA) modulators
Modulation of light Direct modulation of sources Electro-absorption (EA) modulators Why Modulation A communication link is established by transmission of information reliably Optical modulation is embedding
More informationSpatial Investigation of Transverse Mode Turn-On Dynamics in VCSELs
Spatial Investigation of Transverse Mode Turn-On Dynamics in VCSELs Safwat W.Z. Mahmoud Data transmission experiments with single-mode as well as multimode 85 nm VCSELs are carried out from a near-field
More informationMicrowave Photonics: Photonic Generation of Microwave and Millimeter-wave Signals
16 Microwave Photonics: Photonic Generation of Microwave and Millimeter-wave Signals Jianping Yao Microwave Photonics Research Laboratory School of Information Technology and Engineering University of
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 informationOptical Receiver Operation With High Internal Gain of GaP and GaAsP/GaP Light-emitting diodes
Optical Receiver Operation With High Internal Gain of GaP and GaAsP/GaP Light-emitting diodes Heinz-Christoph Neitzert *, Manuela Ferrara, Biagio DeVivo DIIIE, Università di Salerno, Via Ponte Don Melillo
More informationHOMODYNE and heterodyne laser synchronization techniques
328 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 17, NO. 2, FEBRUARY 1999 High-Performance Phase Locking of Wide Linewidth Semiconductor Lasers by Combined Use of Optical Injection Locking and Optical Phase-Lock
More informationExternal-Cavity Tapered Semiconductor Ring Lasers
External-Cavity Tapered Semiconductor Ring Lasers Frank Demaria Laser operation of a tapered semiconductor amplifier in a ring-oscillator configuration is presented. In first experiments, 1.75 W time-average
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 informationSimultaneous Measurements for Tunable Laser Source Linewidth with Homodyne Detection
Simultaneous Measurements for Tunable Laser Source Linewidth with Homodyne Detection Adnan H. Ali Technical college / Baghdad- Iraq Tel: 96-4-770-794-8995 E-mail: Adnan_h_ali@yahoo.com Received: April
More informationBistability in Bipolar Cascade VCSELs
Bistability in Bipolar Cascade VCSELs Thomas Knödl Measurement results on the formation of bistability loops in the light versus current and current versus voltage characteristics of two-stage bipolar
More informationFrequency Stabilization Using Matched Fabry-Perots as References
April 1991 LIDS-P-2032 Frequency Stabilization Using Matched s as References Peter C. Li and Pierre A. Humblet Massachusetts Institute of Technology Laboratory for Information and Decision Systems Cambridge,
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 informationFIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 18.
FIBER OPTICS Prof. R.K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture: 18 Optical Sources- Introduction to LASER Diodes Fiber Optics, Prof. R.K. Shevgaonkar,
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 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 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 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 informationPHASE TO AMPLITUDE MODULATION CONVERSION USING BRILLOUIN SELECTIVE SIDEBAND AMPLIFICATION. Steve Yao
PHASE TO AMPLITUDE MODULATION CONVERSION USING BRILLOUIN SELECTIVE SIDEBAND AMPLIFICATION Steve Yao Jet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Dr., Pasadena, CA 91109
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 informationWavelength division multiplexing of chaotic secure and fiber-optic communications
Wavelength division multiplexing of chaotic secure and fiber-optic communications Jian-Zhong Zhang, An-Bang Wang, Juan-Fen Wang, and Yun-Cai Wang Department of Physics, College of Science, Taiyuan University
More informationEnhanced sensitivity to current modulation near dynamic instability in semiconductor lasers with optical feedback and optical injection
302 J. Opt. Soc. Am. B/ Vol. 21, No. 2/ February 2004 Torre et al. Enhanced sensitivity to current modulation near dynamic instability in semiconductor lasers with optical feedback and optical injection
More informationMitigation of Mode Partition Noise in Quantum-dash Fabry-Perot Mode-locked Lasers using Manchester Encoding
Mitigation of Mode Partition Noise in Quantum-dash Fabry-Perot Mode-locked Lasers using Manchester Encoding Mohamed Chaibi*, Laurent Bramerie, Sébastien Lobo, Christophe Peucheret *chaibi@enssat.fr FOTON
More informationDynamics of a bistable VCSEL subject to optical feedback from a vibrating rough surface
Dynamics of a bistable VCSEL subject to optical feedback from a vibrating rough surface V. N. Chizhevsky arxiv:85.367v [physics.optics] 9 May 8 Abstract The paper presents an experimental study of the
More informationNon-reciprocal phase shift induced by an effective magnetic flux for light
Non-reciprocal phase shift induced by an effective magnetic flux for light Lawrence D. Tzuang, 1 Kejie Fang, 2,3 Paulo Nussenzveig, 1,4 Shanhui Fan, 2 and Michal Lipson 1,5 1 School of Electrical and Computer
More informationCoherence length tunable semiconductor laser with optical feedback
Coherence length tunable semiconductor laser with optical feedback Yuncai Wang,* Lingqin Kong, Anbang Wang, and Linlin Fan Department of Physics, College of Science, Taiyuan University of Technology, Taiyuan
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 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 informationOptical phase-coherent link between an optical atomic clock. and 1550 nm mode-locked lasers
Optical phase-coherent link between an optical atomic clock and 1550 nm mode-locked lasers Kevin W. Holman, David J. Jones, Steven T. Cundiff, and Jun Ye* JILA, National Institute of Standards and Technology
More informationDIRECT MODULATION WITH SIDE-MODE INJECTION IN OPTICAL CATV TRANSPORT SYSTEMS
Progress In Electromagnetics Research Letters, Vol. 11, 73 82, 2009 DIRECT MODULATION WITH SIDE-MODE INJECTION IN OPTICAL CATV TRANSPORT SYSTEMS W.-J. Ho, H.-H. Lu, C.-H. Chang, W.-Y. Lin, and H.-S. Su
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 informationarxiv: v1 [physics.ins-det] 16 Oct 2017
arxiv:1710.05742v1 [physics.ins-det] 16 Oct 2017 Antireflection Coated Semiconductor Laser Amplifier Vasiliki Bolpasi 1, a) 1, b) and Wolf von Klitzing IESL - FORTH (Dated: 17 October 2017) This paper
More informationTwo-Mode Frequency Stabilization of an Internal-Mirror 612 nm He-Ne Laser
Proc. Natl. Sci. Counc. ROC(A) Vol. 24, No. 4, 2000. pp. 274-278 Two-Mode Frequency Stabilization of an Internal-Mirror 612 nm He-Ne Laser TONG-LONG HUANG *,**, YI-SHI CHEN *, JOW-TSONG SHY *,, AND HAI-PEI
More informationPhotonic Microwave Harmonic Generator driven by an Optoelectronic Ring Oscillator
Photonic Microwave Harmonic Generator driven by an Optoelectronic Ring Oscillator Margarita Varón Durán, Arnaud Le Kernec, Jean-Claude Mollier MOSE Group SUPAERO, 1 avenue Edouard-Belin, 3155, Toulouse,
More informationFiber Lasers for EUV Lithography
Fiber Lasers for EUV Lithography A. Galvanauskas, Kai Chung Hou*, Cheng Zhu CUOS, EECS Department, University of Michigan P. Amaya Arbor Photonics, Inc. * Currently with Cymer, Inc 2009 International Workshop
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 informationThis version was downloaded from Northumbria Research Link:
Citation: Al Zaidi, Salam (2016) Optical and electrical characteristics of vertical-cavity surface-emitting lasers for free space optical communications. Doctoral thesis, Northumbria University. This version
More informationVCSELs With Enhanced Single-Mode Power and Stabilized Polarization for Oxygen Sensing
VCSELs With Enhanced Single-Mode Power and Stabilized Polarization for Oxygen Sensing Fernando Rinaldi and Johannes Michael Ostermann Vertical-cavity surface-emitting lasers (VCSELs) with single-mode,
More informationSoliton stability conditions in actively modelocked inhomogeneously broadened lasers
Lu et al. Vol. 20, No. 7/July 2003 / J. Opt. Soc. Am. B 1473 Soliton stability conditions in actively modelocked inhomogeneously broadened lasers Wei Lu,* Li Yan, and Curtis R. Menyuk Department of Computer
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 informationPh 77 ADVANCED PHYSICS LABORATORY ATOMIC AND OPTICAL PHYSICS
Ph 77 ADVANCED PHYSICS LABORATORY ATOMIC AND OPTICAL PHYSICS Diode Laser Characteristics I. BACKGROUND Beginning in the mid 1960 s, before the development of semiconductor diode lasers, physicists mostly
More informationOptical generation of frequency stable mm-wave radiation using diode laser pumped Nd:YAG lasers
Optical generation of frequency stable mm-wave radiation using diode laser pumped Nd:YAG lasers T. Day and R. A. Marsland New Focus Inc. 340 Pioneer Way Mountain View CA 94041 (415) 961-2108 R. L. Byer
More informationSEMICONDUCTOR lasers and amplifiers are important
240 JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 28, NO. 3, FEBRUARY 1, 2010 Temperature-Dependent Saturation Characteristics of Injection Seeded Fabry Pérot Laser Diodes/Reflective Optical Amplifiers Hongyun
More informationExamination Optoelectronic Communication Technology. April 11, Name: Student ID number: OCT1 1: OCT 2: OCT 3: OCT 4: Total: Grade:
Examination Optoelectronic Communication Technology April, 26 Name: Student ID number: OCT : OCT 2: OCT 3: OCT 4: Total: Grade: Declaration of Consent I hereby agree to have my exam results published on
More informationSupplementary Materials for
advances.sciencemag.org/cgi/content/full/4/2/e1700324/dc1 Supplementary Materials for Photocarrier generation from interlayer charge-transfer transitions in WS2-graphene heterostructures Long Yuan, Ting-Fung
More informationMulti-format all-optical-3r-regeneration technology
Multi-format all-optical-3r-regeneration technology Masatoshi Kagawa Hitoshi Murai Amount of information flowing through the Internet is growing by about 40% per year. In Japan, the monthly average has
More information3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA ABSTRACT 1. INTRODUCTION
Beam Combination of Multiple Vertical External Cavity Surface Emitting Lasers via Volume Bragg Gratings Chunte A. Lu* a, William P. Roach a, Genesh Balakrishnan b, Alexander R. Albrecht b, Jerome V. Moloney
More informationEFFECT OF SPONTANEOUS EMISSION NOISE AND MODULATION ON SEMICONDUCTOR LASERS NEAR THRESHOLD WITH OPTICAL FEEDBACK
International Journal of Modern Physics B Vol. 17, Nos. 22, 23 & 24 (2003) 4123 4138 c World Scientific Publishing Company EFFECT OF SPONTANEOUS EMISSION NOISE AND MODULATION ON SEMICONDUCTOR LASERS NEAR
More information1014 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 40, NO. 8, AUGUST 2004
1014 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 40, NO. 8, AUGUST 2004 Theory and Experiments of a Mode-Beating Noise-Suppressed and Mutually Injection-Locked Fabry Perot Laser Diode and Erbium-Doped Fiber
More informationPump noise as the source of self-modulation and self-pulsing in Erbium fiber laser
Pump noise as the source of self-modulation and self-pulsing in Erbium fiber laser Yuri O. Barmenkov and Alexander V. Kir yanov Centro de Investigaciones en Optica, Loma del Bosque 5, Col. Lomas del Campestre,
More informationVCSEL SENSOR FLAT WINDOW TO CAN
DATA SHEET VCSEL SENSOR FLAT WINDOW TO CAN SV3637-001 FEATURES: Designed for low drive currents between 7 and 15mA Flat Window TO-46 style package High speed 1 Ghz The SV3637 combines many of the desired
More informationStabilizing injection-locked lasers through active feedback. Ethan Welch
Stabilizing injection-locked lasers through active feedback. Ethan Welch A senior thesis submitted to the faculty of Brigham Young University in partial fulfillment of the requirements for the degree of
More informationSpeckle Noise Reduction of a Dual-Frequency Laser Doppler Velocimeter Based on an Optically Injected Semiconductor Laser
Speckle Noise Reduction of a Dual-Frequency Laser Doppler Velocimeter Based on an Optically Injected Semiconductor Laser Chih-Hao Cheng, Jia-Wei Lee, Tze-Wei Lin, and Fan-Yi Lin Institute of Photonics
More informationNovel cascaded injection-locked 1.55-µm VCSELs with 66 GHz modulation bandwidth
Novel cascaded injection-locked 1.55-µm VCSELs with 66 GHz modulation bandwidth Xiaoxue Zhao, 1 * Devang Parekh, 1 Erwin K. Lau, 1 Hyuk-Kee Sung, 1, 3 Ming C. Wu, 1 Werner Hofmann, 2 Markus C. Amann, 2
More informationQ8384 Q8384. Optical Spectrum Analyzer
Q8384 Optical Spectrum Analyzer Can measure and evaluate ultra high-speed optical DWDM transmission systems, and optical components at high wavelength resolution and high accuracy. New high-end optical
More informationSingle-mode lasing in PT-symmetric microring resonators
CREOL The College of Optics & Photonics Single-mode lasing in PT-symmetric microring resonators Matthias Heinrich 1, Hossein Hodaei 2, Mohammad-Ali Miri 2, Demetrios N. Christodoulides 2 & Mercedeh Khajavikhan
More information