Search query: optical fiber coupiing semiconductor lasers

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abstract: A novel technique for optical injection locking of two semiconductor lasers through high order Brillouin Stokes components in optical fiber is proposed and experimentally demonstrated. The configuration potentially provides microwave signals generation at manifold Brillouin frequency without high frequency external modulator and generator. Significant narrowing of the locked slave semiconductor laser linewidth was recorded.
author_names: Vasily V Spirin

Marcial Castro

Cesar A Lopez-Mercado

Patrice Megret

Andrei A Fotiadi
title: Optical locking of two semiconductor lasers through high order Brillouin Stokes components in optical fiber
year: 2012

abstract: ZnSe and other zinc chalcogenide semiconductor materials can be doped with divalent transition metal ions to create a mid IR laser gain medium with active function in the wavelength range 2 5 microns and potentially beyond using frequency conversion. As a step towards fiberized laser devices, we have manufactured ZnSe semiconductor fiber waveguides with low (less than 1dB/cm at 1550nm) optical losses, as well as more complex ternary alloys with ZnSxSe(1 x) stoichiometry to potentially allow for annular heterostructures with effective and low order mode corecladding waveguiding.
author_names: Pier J A Sazio

Justin R Sparks

Rongrui He

Mahesh Krishnamurthi

Thomas C Fitzgibbons

Subhasis Chaudhuri

Neil F Baril

Anna C Peacock

Noel Healy

Venkatraman Gopalan

John V Badding
title: Templated growth of II VI semiconductor optical fiber devices and steps towards infrared fiber lasers
venue: Photonics West Lasers and Applications in Science and Engineering
year: 2015

abstract: We present the modeling on high speed modulation of semiconductor lasers beyond 50 GHz over a frequency band of 2 GHz by using strong optical feedback (OFB) This ultra high modulation frequency is achieved by adjusting the external cavity resonance frequency close to the modulation frequency and optimizing strong OFB conditions to achieve stable operation. We show that this optimized strong OFB results in about 20 dB improvement in the link gain of a 55.8 GHz radio over fiber (RoF) link. We also discuss the influence of environmental variations on the simulated modulation characteristics.
author_names: Moustafa Ahmed

Ahmed Bakry

Reem M Al-Tuwirqi

Mohamed S Alghamdi

Fumio Koyama
title: Enhancing Modulation Bandwidth of Semiconductor Lasers beyond 50 GHz by Strong Optical Feedback for Use in Millimeter Wave Radio over Fiber Links
year: 2013

abstract: Using a fiber optic temperature sensing system based on the cross correlation of picosecond optical pulses from a gain switched semiconductor laser, the thermal time constants of several types of optical fiber in water were measured.
author_names: Kazunari Tokunaga

Yoshitaka Naito

Tetsuya Matsuyama
title: Measurement of thermal time constant of optical fiber using linear cross correlation of optical pulses
venue: 2020 Conference on Lasers and Electro Optics Pacific Rim (CLEO PR)
year: 2020

abstract: To distribute microwaves over fibers, optical single sideband (SSB) modulation signals are preferred to optical double sideband (DSB) modulation signals. This study investigates an optically injected semiconductor laser at period one nonlinear dynamics for optical DSB to SSB conversion. For the operating microwave frequencies up to 40 GHz investigated in this study, the proposed system regenerates or even enhances the microwave features of an optical DSB input while converting its optical feature into SSB with an intensity difference of at least 20 dB. The bit error ratio at 622 Mb/s is down to 10( 9) with a sensitivity improvement of up to 3 dB. The proposed system can be self adapted to certain changes in the operating microwave frequency and can operate stably under certain fluctuations in the input optical power and frequency.
author_names: Yu-Han Hung

Cheng-Hao Chu

Sheng-Kwang Hwang
title: Optical double sideband modulation to single sideband modulation conversion using period one nonlinear dynamics of semiconductor lasers for radio over fiber links.
venue: Optics letters
year: 2013

abstract: This paper introduces an integrated fiber physical unclonable function (PUF) verification system based on a semiconductor laser source at substantially lower complexity and cost than existing alternatives. A source sub section consisting of a linear frequency swept semiconductor laser is used in combination with an optical frequency domain reflectometry (OFDR)/LiDAR based measurement sub section in order to conduct fiber identification via measurement of the unique Rayleigh reflection pattern of a section of optical fiber. When using these Rayleigh reflection patterns as PUFs, this technique results in a maximum equal error rate (EER) of 0.15% for a 5 cm section of optical fiber and an EER of less than 1% for a 4 cm section. These results demonstrate that the system can serve as a robust method fiber identification for device and communication verification applications.
author_names: Zheyi Yao

Thomas Mauldin

Gerald Hefferman

Zheyu Xu

Ming Liu

Tao Wei
title: Low cost optical fiber physical unclonable function reader based on a digitally integrated semiconductor LiDAR.
venue: Applied optics
year: 2019

abstract: To mitigate power fading of microwaves over fiber distribution, a scheme for optical double to single sideband conversion is proposed using semiconductor lasers at stable locking dynamics. Microwave quality and data performance are mostly preserved after conversion.
author_names: Kun-Lin Hsieh

Yu-Han Hung

Sheng-Kwang Hwang
title: Optical DSB to SSB conversion for radio over fiber links utilizing semiconductor lasers at stable locking dynamics
venue: 2014 OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology
year: 2014

abstract: Coherent optical frequency comb based on single section semiconductor quantum dots mode locked laser (QD MLL) is a promising device, which is able to provide a large number of equally spaced spectral lines simultaneously. We discuss the measurements and the spectral properties of QD MLL, including relative intensity noise, phase noise of each individual spectral line, as well as differential phase noise between spectral lines. More specifically, we report the frequency dependent nature of QD MLL phase noises, and its impact in the performance of coherent communication systems.
author_names: Rongqing Hui

Mustafa Al-Qadi

M O'sullivan

Chongjin Xie
title: Spectral Properties of Quantum Dots Mode Locked Diode Lasers and the Impact in Fiber Optic Systems
venue: 2020 22nd International Conference on Transparent Optical Networks (ICTON)
year: 2020

abstract: This paper presents a review and discussion of the directly modulated semiconductor lasers and their applications to optical communications and microwave photonics. A detailed and comprehensive demonstration of directly modulated semiconductor lasers from development history to specific techniques on measurement, analysis, and packaging is provided for the first time to the best of our knowledge. A few typical applications based on directly modulated lasers are also illustrated, such as optical fiber communications, free space optical communications and microwave photonics. Future directions of research are also highlighted.
author_names: Ninghua Zhu

Zhan Shi

Zhi ke Zhang

Yi Zhang

Canwen Zou

Zeping Zhao

Yu Liu

Wei Li

Ming Li
title: Directly Modulated Semiconductor Lasers
venue: IEEE Journal of Selected Topics in Quantum Electronics
year: 2018

abstract: A novel scheme for all optical generate ultra wideband (UWB) pulse shape modulation (PSM) signals based on semiconductor fiber ring laser (SFRL) is proposed, in which three UWB PSM signals can be generated simultaneously. A comprehensive broad band dynamic model of this kind of all optical UWB PSM signals is presented and simulated. The numerical simulation results show that the central frequency (CF) of PSM signals, the 10dB bandwidth of PSM signals and the fractional bandwidth of PSM signals are 5GHz, 7GHz and 140% respectively, which satisfy the definition of the UWB.
author_names: Zan-shan Zhao
title: Research of all optical broadcast UWB pulse shape modulation signals based on semiconductor fiber ring laser
venue: 2019 18th International Conference on Optical Communications and Networks (ICOCN)
year: 2019