Slow, Fast, and Backwards Light: Fundamental Aspects

Size: px
Start display at page:

Download "Slow, Fast, and Backwards Light: Fundamental Aspects"

Transcription

1 Slow, Fast, and Backwards Light: Fundamental Aspects Robert W. Boyd University of Rochester Paul Narum Norwegian Defence Research Establishment with George Gehring, Giovanni Piredda, Aaron Schweinsberg, Katie Schwertz, Zhimin Shi, Heedeuk Shin, Joseph Vornehm, Petros Zerom. Presented at PQE, January 6, 2007.

2 Interest in Slow Light Intrigue: Can (group) refractive index really be 10 6? Fundamentals of optical physics Optical delay lines, optical storage, optical memories Implications for quantum information What about fast light (v > c) and backwards light (v negative)? Boyd and Gauthier, Slow and Fast Light, in Progress in Optics, 43, 2002.

3 Slow Light and Optical Buffers All-Optical Switch input ports switch output ports Use Optical Buffering to Resolve Data-Packet Contention slow-light medium But what happens if two data packets arrive simultaneously? Controllable slow light for optical buffering can dramatically increase system performance. Daniel Blumenthal, UC Santa Barbara; Alexander Gaeta, Cornell University; Daniel Gauthier, Duke University; Alan Willner, University of Southern California; Robert Boyd, John Howell, University of Rochester

4 Slow and Fast Light and Optical Resonances Pulses propagate at the group velocity given by v g = c n g n g = n + dn d Want large dispersion to obtain extreme group velocities Sharp spectral features produce large dispersion. The group index can be large and positive (slow light). positive and much less than unity (fast light) or negative (backwards light).

5 How to Create Slow and Fast Light I Use Isolated Gain or Absorption Resonance α absorption resonance g gain resonance 0 0 n n ng slow light ng slow light fast light fast light

6 How to Create Slow and Fast Light II Use Dip in Gain or Absorption Feature g n dip in gain feature 0 0 α n dip in absorption feature ng slow light ng slow light fast light fast light Narrow dips in gain and absorption lines can be created by various nonlinear optical effects, such as electromagnetically induced transparency (EIT), coherent population oscillations (CPO), and conventional saturation.

7 How to Create Slow and Fast Light III Dispersion Management gain coefficient g () double gain line single gain line flattened gain profile contributions to double gain line (n 1) 0 extended region of linear dependence single gain line double gain line frequency ( 0 )/γ M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes, and D. J. Gauthier, Optics Express 13, 9995 (2005).

8 Numerical Modeling of Pulse Propagation through Slow and Fast-Light Media Numerically integrate the reduced wave equation A z 1 v g A t = 0 and plot A(z,t) versus distance z. Assume an input pulse with a Gaussian temporal profile. Study three cases: Slow light v g = 0.5 c Fast light v g = 5 c and v g = -2 c CAUTION: This is a very simplistic model. It ignores GVD and spectral reshaping.

9 Pulse Propagation through a Slow-Light Medium (n g = 2, v g = 0.5 c)

10 Pulse Propagation through a Fast-Light Medium (n g =.2, v g = 5 c)

11 Pulse Propagation through a Fast-Light Medium (n g = -.5, v g = -2 c)

12 Slow and Fast Light in an Erbium Doped Fiber Amplifier Fiber geometry allows long propagation length Saturable gain or loss possible depending on pump intensity Output Advance = 0.32 ms Input FWHM = 1.8 ms 0.15 Time 6 ms Fractional Advancement mw mw mw mw mw - 0 mw out in Modulation Frequency (Hz) Schweinsberg, Lepeshkin, Bigelow, Boyd, and Jarabo, Europhysics Letters, 73, 218 (2006).

13 Observation of Backward Pulse Propagation in an Erbium-Doped-Fiber Optical Amplifier 1550 nm laser ISO 980 nm laser or 80/20 coupler Ref WDM EDF Signal WDM We time-resolve the propagation of the pulse as a function of position along the erbiumdoped fiber. Procedure cutback method couplers embedded in fiber normalized intensity out in G. M. Gehring, A. Schweinsberg, C. Barsi, N. Kostinski, R. W. Boyd, Science 312, time (ms)

14 Experimental Results: Backward Propagation in Erbium-Doped Fiber Normalized: (Amplification removed numerically)

15 Experimental Results: Backward Propagation in Erbium-Doped Fiber Un-Normalized

16 Observation of Backward Pulse Propagation in an Erbium-Doped-Fiber Optical Amplifier Δt= ms pulse amplitude (arb units) 0.06 ms 0.08 ms 0.12 ms 0.14 ms normalized distance n g z (m)

17 Observation of Backward Pulse Propagation in an Erbium-Doped-Fiber Optical Amplifier Summary: Backwards propagation is a realizable physical effect. (Of course, many other workers have measured negative time delays. Our contribution was to measure the pulse evolution within the material medium.)

18 Fundamental Limits on Slow and Fast Light Slow Light: There appear to be no fundamental limits on how much one can delay a pulse of light (although there are very serious practical problems).* Fast Light: But there do seem to be essentially fundamental limits to how much one can advance a pulse of light. Why are the two cases so different?** * Boyd, Gauthier, Gaeta, and Willner, PRA 2005 ** We cannot get around this problem simply by invoking causality, first because we are dealing with group velocity (not information velocity), and second because the relevant equations superficially appear to be symmetric between the slow- and fast-light cases.

19 Why is there no limit to the amount of pulse delay? At the bottom of the dip in the absorpton, the absorption can in principle be made to vanish. There is then no limit on how long a propagation distance can be used. This trick works only for slow light. α n ng dip in absorption feature 0 infinite propagation distance slow light fast light

20 Why can one delay (but not advance) a pulse by an arbitrarily large amount? Two crucial differences between slow and fast light (1) First, note that we cannot use gains greater than approximately exp(16) at any frequency to avoid ASE. And we cannot have absorption larger than T = exp(-16) at the signal frequency, so signal can be measured. (Of course, the argument does not hinge on the value 16.) When examined quantitatively, these constraints impose a limit of at most two pulse-widths of delay or advancement. One can overcome these constraints by using a deep hole in an absorption feature, but this trick works only for slow light, as we have just seen. (2) Spectral reshaping of the pulse is the dominant competing effect in most slow/fast light systems. This also behaves differently for slow and fast-light systems, as we shall now see.

21 Influence of Spectral Reshaping (Line-Center Operation, Dip in Gain or Absorption Feature) input pulse output pulse slow-light output pulse fast-light T( ) G( ) for still longer propagation distances, the pulse breaks up spectrally and temporally spectrally narrowed pulse spectrally broadened pulse double-humped pulse

22 Numerical Results: Propagation through a Linear Dispersive Medium Fast light: single Lorentzian absorption line T = exp(-16) vary absorption line width to control advance Slow light: single Lorentzian gain line T = exp(+16) vary absorption line width to control delay Same Gaussian input pulse in all cases 1 pulse-width delay Slow Light Results 2 pulsewidth advance Fast Light Results note pulse compression and break-up 2 pulse-width delay (expanded time axis) 1 pulse-width advance vacuum propagation 4 pulse-width delay (expanded time axis) note pulse broadening time time

23 Tunable Delays of up to 80 Pulse Widths in Atomic Cesium Vapor signal optional optical pumping fields tra nsmission n x 10-3 n 0 spectrum (275 ps pulse) 0.1 v g / c v g coarse tuning: temperature signal detuning (GHz) 0 Pulse intensity Air 275 ps pulses increasing temperature fine tuning: optical pumping 275 ps pulses pump off 1.0 ns pump on time (ns) Camacho, Peck, Howell, Schweinsberg, Boyd time (ns)

24 Tunable Delays of up to 80 Pulse Widths in Atomic Cesium Vapor Comment: In EIT based slow light, spectral reshaping is the dominant limitation. But far off resonance, this effect is negligible. Group velocity dispersion becomes important. Longer input pulses lead to reduced gvd distortion and longer fractional delays Results for 740 ps pulses intensity Air x1/2 X 10 X time (ns) fractional broadening ps pulses fractional delay Camacho, Peck, Howell, Schweinsberg, Boyd

25 How to Prevent Pulse Distortion (Which Can Limit Data Rates) Two primary mechanisms for pulse distortion in EDFA Spectral broadening, leading to temporal compression CPO gain dip causes spectral components in the wings to be amplified more than central components Temporal gain recovery, leading to temporal broadening Leading edge of signal pulse saturates gain, but for long pulses, the trailing edge can experience recovered gain To minimize second effect, add a cw background to reduce the influence of gain recovery P sig For the proper choice of background power, the two effects exactly cancel! P bg

26 Minimizing Pulse Distortion Laboratory Results 980 nm laser 1550 nm laser EOM ISO splitter WDM function generator Polarizer EDF P sig Pbg WDM broadening compression Pulse width ratio (Tout / Tin) ms 5 ms 10 ms 40 ms power ratio (P bg / P sig )

27 Summary Slow-light techniques hold great promise for applications in telecommunications Good progress being made in devloping new slow-light techniques and applications Backwards and superluminal propagation are strongly counterintuitive, but are fully explained by standard physics.

28

Slow and Fast Light Propagation in Erbium-Doped Optical Fibers

Slow and Fast Light Propagation in Erbium-Doped Optical Fibers Slow and Fast Light Propagation in Erbium-Doped Optical Fibers Nick N. Lepeshkin, Aaron Schweinsberg, Matthew S. Bigelow,* George M. Gehring, and Robert W. Boyd The Institute of Optics, University of Rochester,

More information

Discretely tunable optical packet delays using channelized slow light

Discretely tunable optical packet delays using channelized slow light Discretely tunable optical packet delays using channelized slow light Zhimin Shi ( 石志敏 * and Robert W. Boyd The Institute of Optics, University of Rochester, Rochester, New York 4627, USA Received 7 September

More information

All-Optical Signal Processing and Optical Regeneration

All-Optical Signal Processing and Optical Regeneration 1/36 All-Optical Signal Processing and Optical Regeneration Govind P. Agrawal Institute of Optics University of Rochester Rochester, NY 14627 c 2007 G. P. Agrawal Outline Introduction Major Nonlinear Effects

More information

Observation of superluminal and slow light propagation in erbium-doped optical fiber

Observation of superluminal and slow light propagation in erbium-doped optical fiber EUROPHYSICS LETTERS 15 January 2006 Europhys. Lett., 73 (2), pp. 218 224 (2006) DOI: 10.1209/epl/i2005-10371-0 Observation of superluminal and slow light propagation in erbium-doped optical fiber A. Schweinsberg

More information

Self-advanced fast light propagation in an optical fiber based on Brillouin scattering

Self-advanced fast light propagation in an optical fiber based on Brillouin scattering Self-advanced fast light propagation in an optical fiber based on Brillouin scattering Sanghoon Chin, Miguel Gonzalez-Herraez 1, and Luc Thévenaz Ecole Polytechnique Fédérale de Lausanne, STI-GR-SCI Station

More information

Dr. Rüdiger Paschotta RP Photonics Consulting GmbH. Competence Area: Fiber Devices

Dr. Rüdiger Paschotta RP Photonics Consulting GmbH. Competence Area: Fiber Devices Dr. Rüdiger Paschotta RP Photonics Consulting GmbH Competence Area: Fiber Devices Topics in this Area Fiber lasers, including exotic types Fiber amplifiers, including telecom-type devices and high power

More information

Study of Multiwavelength Fiber Laser in a Highly Nonlinear Fiber

Study 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 information

Advanced Optical Communications Prof. R. K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay

Advanced Optical Communications Prof. R. K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Advanced Optical Communications Prof. R. K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture No. # 27 EDFA In the last lecture, we talked about wavelength

More information

Multi-wavelength laser generation with Bismuthbased Erbium-doped fiber

Multi-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 information

Anomalous dispersion and negative group velocity in a coherence-free cold atomic medium

Anomalous dispersion and negative group velocity in a coherence-free cold atomic medium C82 J. Opt. Soc. Am. B/ Vol. 25, No. 12/ December 2008 Brown et al. Anomalous dispersion and negative group velocity in a coherence-free cold atomic medium William G. A. Brown, Russell McLean,* Andrei

More information

Propagation-induced transition from slow to fast light in highly doped erbium fibers

Propagation-induced transition from slow to fast light in highly doped erbium fibers Propagation-induced transition from slow to fast light in highly doped erbium fibers Oscar G. Calderón,* Sonia Melle, M. A. Antón, F. Carreño, and Francisco Arrieta-Yañez Escuela Universitaria de Óptica,

More information

The Report of Gain Performance Characteristics of the Erbium Doped Fiber Amplifier (EDFA)

The Report of Gain Performance Characteristics of the Erbium Doped Fiber Amplifier (EDFA) The Report of Gain Performance Characteristics of the Erbium Doped Fiber Amplifier (EDFA) Masruri Masruri (186520) 22/05/2008 1 Laboratory Setup The laboratory setup using in this laboratory experiment

More information

Linear cavity erbium-doped fiber laser with over 100 nm tuning range

Linear 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 information

OPTICAL NETWORKS. Building Blocks. A. Gençata İTÜ, Dept. Computer Engineering 2005

OPTICAL NETWORKS. Building Blocks. A. Gençata İTÜ, Dept. Computer Engineering 2005 OPTICAL NETWORKS Building Blocks A. Gençata İTÜ, Dept. Computer Engineering 2005 Introduction An introduction to WDM devices. optical fiber optical couplers optical receivers optical filters optical amplifiers

More information

Introduction Fundamental of optical amplifiers Types of optical amplifiers

Introduction Fundamental of optical amplifiers Types of optical amplifiers ECE 6323 Introduction Fundamental of optical amplifiers Types of optical amplifiers Erbium-doped fiber amplifiers Semiconductor optical amplifier Others: stimulated Raman, optical parametric Advanced application:

More information

Coupling effects of signal and pump beams in three-level saturable-gain media

Coupling effects of signal and pump beams in three-level saturable-gain media Mitnick et al. Vol. 15, No. 9/September 1998/J. Opt. Soc. Am. B 2433 Coupling effects of signal and pump beams in three-level saturable-gain media Yuri Mitnick, Moshe Horowitz, and Baruch Fischer Department

More information

Slow light on Gbit/s differential-phase-shiftkeying

Slow light on Gbit/s differential-phase-shiftkeying Slow light on Gbit/s differential-phase-shiftkeying signals Bo Zhang 1, Lianshan Yan 2, Irfan Fazal 1, Lin Zhang 1, Alan E. Willner 1, Zhaoming Zhu 3, and Daniel. J. Gauthier 3 1 Department of Electrical

More information

EDFA-WDM Optical Network Analysis

EDFA-WDM Optical Network Analysis EDFA-WDM Optical Network Analysis Narruvala Lokesh, kranthi Kumar Katam,Prof. Jabeena A Vellore Institute of Technology VIT University, Vellore, India Abstract : Optical network that apply wavelength division

More information

OPTI510R: Photonics. Khanh Kieu College of Optical Sciences, University of Arizona Meinel building R.626

OPTI510R: Photonics. Khanh Kieu College of Optical Sciences, University of Arizona Meinel building R.626 OPTI510R: Photonics Khanh Kieu College of Optical Sciences, University of Arizona kkieu@optics.arizona.edu Meinel building R.626 Announcements HW #5 is assigned (due April 9) April 9 th class will be in

More information

Mechanism of intrinsic wavelength tuning and sideband asymmetry in a passively mode-locked soliton fiber ring laser

Mechanism 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 information

G. Norris* & G. McConnell

G. Norris* & G. McConnell Relaxed damage threshold intensity conditions and nonlinear increase in the conversion efficiency of an optical parametric oscillator using a bi-directional pump geometry G. Norris* & G. McConnell Centre

More information

DEVELOPMENT OF A NEW INJECTION LOCKING RING LASER AMPLIFIER USING A COUNTER INJECTION: MULTIWAVELENGTH AMPLIFICATION

DEVELOPMENT OF A NEW INJECTION LOCKING RING LASER AMPLIFIER USING A COUNTER INJECTION: MULTIWAVELENGTH AMPLIFICATION DEVELOPMENT OF A NEW INJECTION LOCKING RING LASER AMPLIFIER USING A COUNTER INJECTION: MULTAVELENGTH AMPLIFICATION Rosen Vanyuhov Peev 1, Margarita Anguelova Deneva 1, Marin Nenchev Nenchev 1,2 1 Dept.

More information

WDM Transmitter Based on Spectral Slicing of Similariton Spectrum

WDM Transmitter Based on Spectral Slicing of Similariton Spectrum WDM Transmitter Based on Spectral Slicing of Similariton Spectrum Leila Graini and Kaddour Saouchi Laboratory of Study and Research in Instrumentation and Communication of Annaba (LERICA), Department of

More information

Optimization of supercontinuum generation in photonic crystal fibers for pulse compression

Optimization of supercontinuum generation in photonic crystal fibers for pulse compression Optimization of supercontinuum generation in photonic crystal fibers for pulse compression Noah Chang Herbert Winful,Ted Norris Center for Ultrafast Optical Science University of Michigan What is Photonic

More information

Chapter 12: Optical Amplifiers: Erbium Doped Fiber Amplifiers (EDFAs)

Chapter 12: Optical Amplifiers: Erbium Doped Fiber Amplifiers (EDFAs) Chapter 12: Optical Amplifiers: Erbium Doped Fiber Amplifiers (EDFAs) Prof. Dr. Yaocheng SHI ( 时尧成 ) yaocheng@zju.edu.cn http://mypage.zju.edu.cn/yaocheng 1 Traditional Optical Communication System Loss

More information

Improved slow-light performance of 10 Gb/s NRZ, PSBT and DPSK signals in fiber broadband SBS

Improved slow-light performance of 10 Gb/s NRZ, PSBT and DPSK signals in fiber broadband SBS Improved slow-light performance of 10 Gb/s NRZ, PSBT and DPSK signals in fiber broadband SBS Lilin Yi 1, 2, Yves Jaouën 1, Weisheng Hu 2, Yikai Su 2, Sébastien Bigo 3 1 GET/Telecom Paris, CNRS UMR5141,

More information

Optical Amplifiers (Chapter 6)

Optical Amplifiers (Chapter 6) Optical Amplifiers (Chapter 6) General optical amplifier theory Semiconductor Optical Amplifier (SOA) Raman Amplifiers Erbium-doped Fiber Amplifiers (EDFA) Read Chapter 6, pp. 226-266 Loss & dispersion

More information

The 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 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 information

Fiber-Optic Communication Systems

Fiber-Optic Communication Systems Fiber-Optic Communication Systems Second Edition GOVIND P. AGRAWAL The Institute of Optics University of Rochester Rochester, NY A WILEY-iNTERSCIENCE PUBLICATION JOHN WILEY & SONS, INC. NEW YORK / CHICHESTER

More information

2-R REGENERATION EXPLOITING SELF-PHASE MODULATION IN A SEMICONDUCTOR OPTICAL AMPLIFIER

2-R REGENERATION EXPLOITING SELF-PHASE MODULATION IN A SEMICONDUCTOR OPTICAL AMPLIFIER 2-R REGENERATION EXPLOITING SELF-PHASE MODULATION IN A SEMICONDUCTOR OPTICAL AMPLIFIER Gianluca Meloni,^ Antonella Bogoni,^ and Luca Poti^ Scuola Superiore Sunt'Anna, P.zza dei Martin della Libertd 33,

More information

Notes on Optical Amplifiers

Notes on Optical Amplifiers Notes on Optical Amplifiers Optical amplifiers typically use energy transitions such as those in atomic media or electron/hole recombination in semiconductors. In optical amplifiers that use semiconductor

More information

Available online at ScienceDirect. Procedia Computer Science 93 (2016 )

Available online at   ScienceDirect. Procedia Computer Science 93 (2016 ) Available online at www.sciencedirect.com ScienceDirect Procedia Computer Science 93 (016 ) 647 654 6th International Conference On Advances In Computing & Communications, ICACC 016, 6-8 September 016,

More information

Optimisation of DSF and SOA based Phase Conjugators. by Incorporating Noise-Suppressing Fibre Gratings

Optimisation of DSF and SOA based Phase Conjugators. by Incorporating Noise-Suppressing Fibre Gratings Optimisation of DSF and SOA based Phase Conjugators by Incorporating Noise-Suppressing Fibre Gratings Paper no: 1471 S. Y. Set, H. Geiger, R. I. Laming, M. J. Cole and L. Reekie Optoelectronics Research

More information

Optical Transport Tutorial

Optical Transport Tutorial Optical Transport Tutorial 4 February 2015 2015 OpticalCloudInfra Proprietary 1 Content Optical Transport Basics Assessment of Optical Communication Quality Bit Error Rate and Q Factor Wavelength Division

More information

Progress In Electromagnetics Research C, Vol. 15, 37 48, 2010 TEMPERATURE INSENSITIVE BROAD AND FLAT GAIN C-BAND EDFA BASED ON MACRO-BENDING

Progress In Electromagnetics Research C, Vol. 15, 37 48, 2010 TEMPERATURE INSENSITIVE BROAD AND FLAT GAIN C-BAND EDFA BASED ON MACRO-BENDING Progress In Electromagnetics Research C, Vol. 15, 37 48, 2010 TEMPERATURE INSENSITIVE BROAD AND FLAT GAIN C-BAND EDFA BASED ON MACRO-BENDING P. Hajireza Optical Fiber Devices Group Multimedia University

More information

Experimental demonstration of both inverted and non-inverted wavelength conversion based on transient cross phase modulation of SOA

Experimental demonstration of both inverted and non-inverted wavelength conversion based on transient cross phase modulation of SOA Experimental demonstration of both inverted and non-inverted wavelength conversion based on transient cross phase modulation of SOA Songnian Fu, Jianji Dong *, P. Shum, and Liren Zhang (1) Network Technology

More information

Optical Communications and Networking 朱祖勍. Oct. 9, 2017

Optical Communications and Networking 朱祖勍. Oct. 9, 2017 Optical Communications and Networking Oct. 9, 2017 1 Optical Amplifiers In optical communication systems, the optical signal from the transmitter are attenuated by the fiber and other passive components

More information

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 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 information

SUPPLEMENTARY INFORMATION DOI: /NPHOTON

SUPPLEMENTARY INFORMATION DOI: /NPHOTON Supplementary Methods and Data 1. Apparatus Design The time-of-flight measurement apparatus built in this study is shown in Supplementary Figure 1. An erbium-doped femtosecond fibre oscillator (C-Fiber,

More information

Role of distributed amplification in designing high-capacity soliton systems

Role of distributed amplification in designing high-capacity soliton systems Role of distributed amplification in designing high-capacity soliton systems Zhi M. Liao and Govind P. Agrawal The Institute of Optics, University of Rochester, Rochester, New York 1467 gpa@optics.rochester.edu

More information

Yb-doped Mode-locked fiber laser based on NLPR Yan YOU

Yb-doped Mode-locked fiber laser based on NLPR Yan YOU Yb-doped Mode-locked fiber laser based on NLPR 20120124 Yan YOU Mode locking method-nlpr Nonlinear polarization rotation(nlpr) : A power-dependent polarization change is converted into a power-dependent

More information

A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier *

A novel 3-stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier * Journal of Zhejiang University SCIENCE ISSN 9-9 http://www.zju.edu.cn/jzus E-mail: jzus@zju.edu.cn A novel -stage structure for a low-noise, high-gain and gain-flattened L-band erbium doped fiber amplifier

More information

Quasi-Light-Storage based on time-frequency coherence

Quasi-Light-Storage based on time-frequency coherence Quasi-Light-Storage based on time-frequency coherence Stefan Preußler 1 *, Kambiz Jamshidi 1,2 *, Andrzej Wiatrek 1, Ronny Henker 1, Christian-Alexander Bunge 1 and Thomas Schneider 1 1 Deutsche Telekom

More information

Phase Sensitive Amplifier Based on Ultrashort Pump Pulses

Phase Sensitive Amplifier Based on Ultrashort Pump Pulses Phase Sensitive Amplifier Based on Ultrashort Pump Pulses Alexander Gershikov and Gad Eisenstein Department of Electrical Engineering, Technion, Haifa, 32000, Israel. Corresponding author: alexger@campus.technion.ac.il

More information

Pulse Restoration by Filtering of Self-Phase Modulation Broadened Optical Spectrum

Pulse Restoration by Filtering of Self-Phase Modulation Broadened Optical Spectrum JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 20, NO. 7, JULY 2002 1113 Pulse Restoration by Filtering of Self-Phase Modulation Broadened Optical Spectrum Bengt-Erik Olsson, Member, IEEE, and Daniel J. Blumenthal,

More information

Generation of High-order Group-velocity-locked Vector Solitons

Generation of High-order Group-velocity-locked Vector Solitons Generation of High-order Group-velocity-locked Vector Solitons X. X. Jin, Z. C. Wu, Q. Zhang, L. Li, D. Y. Tang, D. Y. Shen, S. N. Fu, D. M. Liu, and L. M. Zhao, * Jiangsu Key Laboratory of Advanced Laser

More information

Elimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers

Elimination 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 information

Enhanced spectral compression in nonlinear optical

Enhanced spectral compression in nonlinear optical Enhanced spectral compression in nonlinear optical fibres Sonia Boscolo, Christophe Finot To cite this version: Sonia Boscolo, Christophe Finot. Enhanced spectral compression in nonlinear optical fibres.

More information

Optical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Photonics Group Department of Micro- and Nanosciences Aalto University

Optical 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 information

1550 nm Programmable Picosecond Laser, PM

1550 nm Programmable Picosecond Laser, PM 1550 nm Programmable Picosecond Laser, PM The Optilab is a programmable laser that produces picosecond pulses with electrical input pulses. It functions as a seed pulse generator for Master Oscillator

More information

Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping

Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping Albert Töws and Alfred Kurtz Cologne University of Applied Sciences Steinmüllerallee 1, 51643 Gummersbach, Germany

More information

Module 19 : WDM Components

Module 19 : WDM Components Module 19 : WDM Components Lecture : WDM Components - I Part - I Objectives In this lecture you will learn the following WDM Components Optical Couplers Optical Amplifiers Multiplexers (MUX) Insertion

More information

Elements of Optical Networking

Elements of Optical Networking Bruckner Elements of Optical Networking Basics and practice of optical data communication With 217 Figures, 13 Tables and 93 Exercises Translated by Patricia Joliet VIEWEG+ TEUBNER VII Content Preface

More information

InP-based Waveguide Photodetector with Integrated Photon Multiplication

InP-based Waveguide Photodetector with Integrated Photon Multiplication InP-based Waveguide Photodetector with Integrated Photon Multiplication D.Pasquariello,J.Piprek,D.Lasaosa,andJ.E.Bowers Electrical and Computer Engineering Department University of California, Santa Barbara,

More information

Dispersion Pre-Compensation for a Multi-wavelength Erbium Doped Fiber Laser Using Cascaded Fiber Bragg Gratings

Dispersion Pre-Compensation for a Multi-wavelength Erbium Doped Fiber Laser Using Cascaded Fiber Bragg Gratings Journal of Applied Sciences Research, 5(10): 1744749, 009 009, INSInet Publication Dispersion Pre-Compensation for a Multi-wavelength Erbium Doped Fiber Laser Using Cascaded Fiber Bragg Gratings 1 1 1

More information

Optics Communications

Optics Communications Optics Communications 284 (11) 2327 2336 Contents lists available at ScienceDirect Optics Communications journal homepage: www.elsevier.com/locate/optcom Multiwavelength lasers with homogeneous gain and

More information

DBR 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. 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 information

Lasers PH 645/ OSE 645/ EE 613 Summer 2010 Section 1: T/Th 2:45-4:45 PM Engineering Building 240

Lasers PH 645/ OSE 645/ EE 613 Summer 2010 Section 1: T/Th 2:45-4:45 PM Engineering Building 240 Lasers PH 645/ OSE 645/ EE 613 Summer 2010 Section 1: T/Th 2:45-4:45 PM Engineering Building 240 John D. Williams, Ph.D. Department of Electrical and Computer Engineering 406 Optics Building - UAHuntsville,

More information

Study of All-Optical Wavelength Conversion and Regeneration Subsystems for use in Wavelength Division Multiplexing (WDM) Telecommunication Networks.

Study of All-Optical Wavelength Conversion and Regeneration Subsystems for use in Wavelength Division Multiplexing (WDM) Telecommunication Networks. Study of All-Optical Wavelength Conversion and Regeneration Subsystems for use in Wavelength Division Multiplexing (WDM) Telecommunication Networks. Hercules Simos * National and Kapodistrian University

More information

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.

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. 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 information

Lecture 6 Fiber Optical Communication Lecture 6, Slide 1

Lecture 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 information

Optical 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 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 information

ANALYSIS OF DISPERSION COMPENSATION IN A SINGLE MODE OPTICAL FIBER COMMUNICATION SYSTEM

ANALYSIS OF DISPERSION COMPENSATION IN A SINGLE MODE OPTICAL FIBER COMMUNICATION SYSTEM ANAYSIS OF DISPERSION COMPENSATION IN A SINGE MODE OPTICA FIBER COMMUNICATION SYSTEM Sani Abdullahi Mohammed 1, Engr. Yahya Adamu and Engr. Matthew Kwatri uka 3 1,,3 Department of Electrical and Electronics

More information

Signal Conditioning Parameters for OOFDM System

Signal Conditioning Parameters for OOFDM System Chapter 4 Signal Conditioning Parameters for OOFDM System 4.1 Introduction The idea of SDR has been proposed for wireless transmission in 1980. Instead of relying on dedicated hardware, the network has

More information

RADIO-OVER-FIBER TRANSPORT SYSTEMS BASED ON DFB LD WITH MAIN AND 1 SIDE MODES INJECTION-LOCKED TECHNIQUE

RADIO-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 information

Extended delay of broadband signals in stimulated Brillouin scattering slow light using synthesized pump chirp

Extended delay of broadband signals in stimulated Brillouin scattering slow light using synthesized pump chirp Extended delay of broadband signals in stimulated Brillouin scattering slow light using synthesized pump chirp Avi Zadok, Avishay Eyal and Moshe Tur Faculty of Engineering, Tel-Aviv University, Tel-Aviv

More information

Observation of large 10-Gb/s SBS slow light delay with low distortion using an optimized gain profile

Observation of large 10-Gb/s SBS slow light delay with low distortion using an optimized gain profile Observation of large 10-Gb/s SBS slow light delay with low distortion using an optimized gain profile E. Cabrera-Granado, Oscar G. Calderón, Sonia Melle and Daniel J. Gauthier Department of Physics and

More information

First published on: 22 February 2011 PLEASE SCROLL DOWN FOR ARTICLE

First published on: 22 February 2011 PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [University of California, Irvine] On: 24 April 2011 Access details: Access Details: [subscription number 923037147] Publisher Taylor & Francis Informa Ltd Registered in

More information

PERFORMANCE ANALYSIS OF WDM AND EDFA IN C-BAND FOR OPTICAL COMMUNICATION SYSTEM

PERFORMANCE ANALYSIS OF WDM AND EDFA IN C-BAND FOR OPTICAL COMMUNICATION SYSTEM www.arpapress.com/volumes/vol13issue1/ijrras_13_1_26.pdf PERFORMANCE ANALYSIS OF WDM AND EDFA IN C-BAND FOR OPTICAL COMMUNICATION SYSTEM M.M. Ismail, M.A. Othman, H.A. Sulaiman, M.H. Misran & M.A. Meor

More information

LABORATORY INSTRUCTION NOTES ERBIUM-DOPED FIBER AMPLIFIER

LABORATORY INSTRUCTION NOTES ERBIUM-DOPED FIBER AMPLIFIER ECE1640H Advanced Labs for Special Topics in Photonics LABORATORY INSTRUCTION NOTES ERBIUM-DOPED FIBER AMPLIFIER Fictitious moving pill box in a fiber amplifier Faculty of Applied Science and Engineering

More information

EDFA WDM Optical Network using GFF

EDFA 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 information

A new picosecond Laser pulse generation method.

A 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 information

Fundamental Optics ULTRAFAST THEORY ( ) = ( ) ( q) FUNDAMENTAL OPTICS. q q = ( A150 Ultrafast Theory

Fundamental Optics ULTRAFAST THEORY ( ) = ( ) ( q) FUNDAMENTAL OPTICS. q q = ( A150 Ultrafast Theory ULTRAFAST THEORY The distinguishing aspect of femtosecond laser optics design is the need to control the phase characteristic of the optical system over the requisite wide pulse bandwidth. CVI Laser Optics

More information

Fiber Lasers for EUV Lithography

Fiber 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 information

All optical wavelength converter based on fiber cross-phase modulation and fiber Bragg grating

All optical wavelength converter based on fiber cross-phase modulation and fiber Bragg grating All optical wavelength converter based on fiber cross-phase modulation and fiber Bragg grating Pavel Honzatko a, a Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, v.v.i.,

More information

Module 12 : System Degradation and Power Penalty

Module 12 : System Degradation and Power Penalty Module 12 : System Degradation and Power Penalty Lecture : System Degradation and Power Penalty Objectives In this lecture you will learn the following Degradation during Propagation Modal Noise Dispersion

More information

Lecture 3 Fiber Optical Communication Lecture 3, Slide 1

Lecture 3 Fiber Optical Communication Lecture 3, Slide 1 Lecture 3 Dispersion in single-mode fibers Material dispersion Waveguide dispersion Limitations from dispersion Propagation equations Gaussian pulse broadening Bit-rate limitations Fiber losses Fiber Optical

More information

EDFA Applications in Test & Measurement

EDFA Applications in Test & Measurement EDFA Applications in Test & Measurement White Paper PN 200-0600-00 Revision 1.1 September 2003 Calmar Optcom, Inc www.calamropt.com Overview Erbium doped fiber amplifiers (EDFAs) amplify optical pulses

More information

Optical Fiber Technology. Photonic Network By Dr. M H Zaidi

Optical Fiber Technology. Photonic Network By Dr. M H Zaidi Optical Fiber Technology Numerical Aperture (NA) What is numerical aperture (NA)? Numerical aperture is the measure of the light gathering ability of optical fiber The higher the NA, the larger the core

More information

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 37

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 37 FIBER OPTICS Prof. R.K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture: 37 Introduction to Raman Amplifiers Fiber Optics, Prof. R.K. Shevgaonkar, Dept.

More information

R. J. Jones Optical Sciences OPTI 511L Fall 2017

R. 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 information

HIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS

HIGH 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 information

EDFA-WDM Optical Network Design System

EDFA-WDM Optical Network Design System Available online at www.sciencedirect.com Procedia Engineering 53 ( 2013 ) 294 302 Malaysian Technical Universities Conference on Engineering & Technology 2012, MUCET 2012 Part -1 Electronic and Electrical

More information

Optical Fiber Amplifiers. Scott Freese. Physics May 2008

Optical Fiber Amplifiers. Scott Freese. Physics May 2008 Optical Fiber Amplifiers Scott Freese Physics 262 2 May 2008 Partner: Jared Maxson Abstract The primary goal of this experiment was to gain an understanding of the basic components of an Erbium doped fiber

More information

The absorption of the light may be intrinsic or extrinsic

The absorption of the light may be intrinsic or extrinsic Attenuation Fiber Attenuation Types 1- Material Absorption losses 2- Intrinsic Absorption 3- Extrinsic Absorption 4- Scattering losses (Linear and nonlinear) 5- Bending Losses (Micro & Macro) Material

More information

S Optical Networks Course Lecture 2: Essential Building Blocks

S Optical Networks Course Lecture 2: Essential Building Blocks S-72.3340 Optical Networks Course Lecture 2: Essential Building Blocks Edward Mutafungwa Communications Laboratory, Helsinki University of Technology, P. O. Box 2300, FIN-02015 TKK, Finland Tel: +358 9

More information

Chapter 8. Wavelength-Division Multiplexing (WDM) Part II: Amplifiers

Chapter 8. Wavelength-Division Multiplexing (WDM) Part II: Amplifiers Chapter 8 Wavelength-Division Multiplexing (WDM) Part II: Amplifiers Introduction Traditionally, when setting up an optical link, one formulates a power budget and adds repeaters when the path loss exceeds

More information

AN EFFICIENT L-BAND ERBIUM-DOPED FIBER AMPLIFIER WITH ZIRCONIA-YTTRIA-ALUMINUM CO-DOPED SILICA FIBER

AN EFFICIENT L-BAND ERBIUM-DOPED FIBER AMPLIFIER WITH ZIRCONIA-YTTRIA-ALUMINUM CO-DOPED SILICA FIBER Journal of Non - Oxide Glasses Vol. 10, No. 3, July - September 2018, p. 65-70 AN EFFICIENT L-BAND ERBIUM-DOPED FIBER AMPLIFIER WITH ZIRCONIA-YTTRIA-ALUMINUM CO-DOPED SILICA FIBER A. A. ALMUKHTAR a, A.

More information

Theoretical and Experimental Study of Harmonically Modelocked Fiber Lasers for Optical Communication Systems

Theoretical and Experimental Study of Harmonically Modelocked Fiber Lasers for Optical Communication Systems JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 18, NO. 11, NOVEMBER 2000 1565 Theoretical and Experimental Study of Harmonically Modelocked Fiber Lasers for Optical Communication Systems Moshe Horowitz, Curtis

More information

OPTICAL COMMUNICATIONS S

OPTICAL COMMUNICATIONS S OPTICAL COMMUNICATIONS S-108.3110 1 Course program 1. Introduction and Optical Fibers 2. Nonlinear Effects in Optical Fibers 3. Fiber-Optic Components 4. Transmitters and Receivers 5. Fiber-Optic Measurements

More information

Chirped Bragg Grating Dispersion Compensation in Dense Wavelength Division Multiplexing Optical Long-Haul Networks

Chirped Bragg Grating Dispersion Compensation in Dense Wavelength Division Multiplexing Optical Long-Haul Networks 363 Chirped Bragg Grating Dispersion Compensation in Dense Wavelength Division Multiplexing Optical Long-Haul Networks CHAOUI Fahd 3, HAJAJI Anas 1, AGHZOUT Otman 2,4, CHAKKOUR Mounia 3, EL YAKHLOUFI Mounir

More information

Optical solitons in a silicon waveguide

Optical solitons in a silicon waveguide Optical solitons in a silicon waveguide Jidong Zhang 1, Qiang Lin 2, Giovanni Piredda 2, Robert W. Boyd 2, Govind P. Agrawal 2, and Philippe M. Fauchet 1,2 1 Department of Electrical and Computer Engineering,

More information

SIMULATION OF FIBER LOOP BUFFER MEMORY OF ALL-OPTICAL PACKET SWITCH. Mandar Naik, Yatindra Nath Singh

SIMULATION OF FIBER LOOP BUFFER MEMORY OF ALL-OPTICAL PACKET SWITCH. Mandar Naik, Yatindra Nath Singh SIMULATION OF FIBER LOOP BUFFER MEMORY ABSTRACT OF ALL-OPTICAL PACKET SWITCH Mandar Naik, Yatindra Nath Singh Center for Laser Technology Indian Institute of Technology Kanpur - 28 16 India {mandy,ynsingh}@iitk.ac.in

More information

This document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore.

This document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore. This document is downloaded from DR-NTU, Nanyang Technological University Library, Singapore. Title 80GHz dark soliton fiber laser Author(s) Citation Song, Y. F.; Guo, J.; Zhao, L. M.; Shen, D. Y.; Tang,

More information

ESTIMATION OF NOISE FIGURE USING GFF WITH HYBRID QUAD PUMPING

ESTIMATION OF NOISE FIGURE USING GFF WITH HYBRID QUAD PUMPING IJCRR Vol 05 issue 13 Section: Technology Category: Research Received on: 19/12/12 Revised on: 16/01/13 Accepted on: 09/02/13 ESTIMATION OF NOISE FIGURE USING GFF WITH HYBRID QUAD PUMPING V.R. Prakash,

More information

Practical Aspects of Raman Amplifier

Practical Aspects of Raman Amplifier Practical Aspects of Raman Amplifier Contents Introduction Background Information Common Types of Raman Amplifiers Principle Theory of Raman Gain Noise Sources Related Information Introduction This document

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION Supplementary Information "Large-scale integration of wavelength-addressable all-optical memories in a photonic crystal chip" SUPPLEMENTARY INFORMATION Eiichi Kuramochi*, Kengo Nozaki, Akihiko Shinya,

More information

Slow light fiber systems in microwave photonics

Slow light fiber systems in microwave photonics Invited Paper Slow light fiber systems in microwave photonics Luc Thévenaz a *, Sang-Hoon Chin a, Perrine Berger b, Jérôme Bourderionnet b, Salvador Sales c, Juan Sancho-Dura c a Ecole Polytechnique Fédérale

More information

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 35. Self-Phase-Modulation

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 35. Self-Phase-Modulation FIBER OPTICS Prof. R.K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture: 35 Self-Phase-Modulation (SPM) Fiber Optics, Prof. R.K. Shevgaonkar, Dept. of Electrical

More information

Development of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers

Development 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 information