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Author : Xiaoxue Zhao
Publisher :
ISBN 13 :
Total Pages : 426 pages
Book Rating : 4.:/5 (34 download)
Download or read book Optical Injection Locking on Vertical-cavity Surface-emitting Lasers (VCSELs) written by Xiaoxue Zhao and published by . This book was released on 2008 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lukas Chrostowski
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (34 download)
Download or read book Optical Injection Locking of Vertical Cavity Surface Emitting Lasers written by Lukas Chrostowski and published by . This book was released on 2004 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Devang Parekh
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (858 download)
Download or read book Optical Injection Locking of Vertical Cavity Surface-Emitting Lasers written by Devang Parekh and published by . This book was released on 2012 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the rise of mobile (cellphones, tablets, notebooks, etc.) and broadband wireline communications (Fiber to the Home), there are increasing demands being placed on transmitters for moving data from device to device and around the world. Digital and analog fiber-optic communications have been the key technology to meet this challenge, ushering in ubiquitous Internet and cable TV over the past 20 years. At the physical layer, high-volume low-cost manufacturing of semiconductor optoelectronic devices has played an integral role in allowing for deployment of high-speed communication links. In particular, vertical cavity surface emitting lasers (VCSEL) have revolutionized short reach communications and are poised to enter more markets due to their low cost, small size, and performance. However, VCSELs have disadvantages such as limited modulation performance and large frequency chirp which limits fiber transmission speed and distance, key parameters for many fiber-optic communication systems. Optical injection locking is one method to overcome these limitations without re-engineering the VCSEL at the device level. By locking the frequency and phase of the VCSEL by the direct injection of light from another laser oscillator, improved device performance is achieved in a post-fabrication method. In this dissertation, optical injection locking of VCSELs is investigated from an applications perspective. Optical injection locking of VCSELs can be used as a pathway to reduce complexity, cost, and size of both digital and analog fiber-optic communications. On the digital front, reduction of frequency chirp via bit pattern inversion for large-signal modulation is experimentally demonstrated showing up to 10 times reduction in frequency chirp and over 90 times increase in fiber transmission distance. Based on these results, a new reflection-based interferometric model for optical injection locking was established to explain this phenomenon. On the analog side, the resonance frequency enhancement was exploited for millimeter-wave radio over fiber communications. Experimental demonstration of 4 Gb/s data transmission over 20 km of fiber and 3 m of wireless transmission at a 60 GHz carrier frequency was achieved. Additionally, optical injection of multi-transverse mode (MM) VCSELs was investigated showing record resonance frequency enhancement of> 54 GHz and 3- dB bandwidth of 38 GHz. Besides these applications, a number of other intriguing applications are also discussed, including an optoelectronic oscillator (OEO) and wavelength-division multiplexed passive optical networks (WDM-PON). Finally, the future of optical injection locking and its direction going forward will be discussed.
Author :
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (227 download)
Download or read book Integrated Optoelectronics Using Injection-Locked Vertical Cavity Surface Emitting Lasers written by and published by . This book was released on 1997 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Final Report, describes experimental, analytical and numerical investigations of injection locking in a vertical cavity surface emitting laser for applications which benefit from optical control of microwaves. It concentrates on strong injection locking, where the imposition of the external optical signal not only locks the slave laser to the injected signal but also modifies the dynamic characteristics of the coupling between the optical field and the gain medium. This can lead to unstable dynamics in a vertical cavity surface emitting laser, or other semiconductor laser, and the optical output can consist principally of two frequency components. The frequency separation between these two components can be tuned across a broad range. We have found that a conventional coupled equation model identifies all of the key phenomena that we observe in our data. Our data shows the particular laser that we studied had a very strong noise spectra and a polarization instability which would have kept it from many optical control of microwaves applications. However, these features are not intrinsic to vertical cavity surface emitting lasers. The ability to generate a tunable modulation with controlled output characteristics using such a compact optical source is very attractive. Further studies are required.
Author : Hyuk-Kee Sung
Publisher :
ISBN 13 :
Total Pages : 318 pages
Book Rating : 4.:/5 (35 download)
Download or read book Strong Optical Injection Locking of Edge-emitting Lasers and Its Applications written by Hyuk-Kee Sung and published by . This book was released on 2006 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor lasers are essential components that enable high-speed long-haul communication and have been widely used for various applications in photonics technology. Semiconductor lasers under optical injection locking exhibit superior performance over free-running lasers and provide useful applications not achievable through the free-running lasers. The performance of injection-locked lasers has been found to be significantly improved with stronger injection. In this dissertation, the characteristics and applications of semiconductor lasers under strong optical injection locking are presented and analyzed in various aspects. First, ultra-strong (injection ratio R ̃10 dB) optical injection locking properties are investigated experimentally and theoretically. Direct modulation responses of ultra-strong optical injection-locked distributed feedback (DFB) lasers show three distinctive modulation characteristics depending on frequency detuning values. These different optical properties and electric modulation characteristics can be utilized in various applications such as analog fiber optic link, broadband digital communications, RF photonics and opto-electronic oscillators (OEOs). Using the strong injection-locked lasers, a novel single sideband generation has been demonstrated. A modulation sideband on the longer wavelength side is enhanced due to the resonant amplification by the slave laser's cavity mode, resulting in a 12-dB asymmetry at 20-GHz RF modulation. The dispersion limited RF bandwidth has been greatly increased by maintaining the variation of fiber transmission response within 7 dB up to 20-GHz RF carrier frequency over 80-km fiber transmission. Second, to improve fiber optic link performances, gain-lever distributed Bragg reflector (DBR) lasers have been fabricated. With a gain-lever modulation, 9-dB increase of a link gain has been achieved compared with a standard modulation.
Author : Sharad Bhooplapur
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (913 download)
Download or read book Injection-locked Vertical Cavity Surface Emitting Lasers (VCSELs) for Optical Arbitrary Waveform Generation written by Sharad Bhooplapur and published by . This book was released on 2014 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1. Modulators An array of VCSELs is packaged and characterized for use as a modulator for rapid-update pulse-shaping at GHz rates. The amplitude and phase modulation characteristics of an injection-locked VCSEL are simultaneously measured at GHz modulation rates. 2. Optical Frequency Comb Sources An actively mode-locked semiconductor laser was assembled, with a 12.5 GHz repetition rate, ~ 200 individually resolvable comblines directly out of the laser, and high frequency stability. In addition, optical frequency comb sources are generated by modulation of a single frequency laser. 3. High-resolution optical spectral demultiplexers The demultiplexers are implemented using bulk optics, and are used to spatially resolve individual optical comblines onto the modulator array. 4. Optical waveform measurement techniques Several techniques are used to measure generated waveforms, especially for spectral phase measurements, including multi-heterodyne phase retrieval. In addition, an architecture for discriminating between ultrashort encoded optical pulses with record high sensitivity is demonstrated.
Author : Julian Cheng
Publisher : CRC Press
ISBN 13 : 1482282976
Total Pages : 340 pages
Book Rating : 4.4/5 (822 download)
Download or read book Vertical-Cavity Surface-Emitting Lasers written by Julian Cheng and published by CRC Press. This book was released on 2000-07-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since first coming into existence in the early 90s, the vertical-cavity surface-emitting laser (VCSEL) has made several quantum leaps in performance. The performance of VCSELs now exceeds that of edge-emitting lasers in many respects, and offers a superior optical beam and much easier monolithic integrability. As the VCSEL technology improves furth
Author : Kent D. Choquette
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.F/5 ( download)
Download or read book Vertical-cavity Surface-emitting Lasers VIII written by Kent D. Choquette and published by SPIE-International Society for Optical Engineering. This book was released on 2004 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Author : Tien Pei Lee
Publisher : World Scientific
ISBN 13 : 9814500348
Total Pages : 256 pages
Book Rating : 4.8/5 (145 download)
Download or read book Current Trends In Vertical Cavity Surface Emitting Lasers written by Tien Pei Lee and published by World Scientific. This book was released on 1995-07-26 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: With significant progress made in recent years, vertical cavity surface emitting lasers (VCSELs) have emerged as potential lightwave sources with a variety of applications, including high speed optical interconnects, parallel data links, optical recording, 2-D scanning, and optical signal processing. This volume, which contains a collection of articles by outstanding experts on this topic, encompasses a broad discussion of the current trends in the development of VCSELs. Discussions include material growths, structure designs, processing methods, performance analysis, improvement strategies, and future prospects. The collection provides a comprehensive overview that may help newcomers to this field as well as engineers and researchers who are engaged in the research and development of this new exciting device family.
Author : Tal Fishman
Publisher :
ISBN 13 :
Total Pages : 99 pages
Book Rating : 4.:/5 (884 download)
Download or read book Analysis of Mode Formation and Injection Locking in Photonic Lattices of Vertical Cavity Surface Emitting Laser Arrays (VCSEL'S). written by Tal Fishman and published by . This book was released on 2000 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Junji Ohtsubo
Publisher : Springer
ISBN 13 : 3319561383
Total Pages : 679 pages
Book Rating : 4.3/5 (195 download)
Download or read book Semiconductor Lasers written by Junji Ohtsubo and published by Springer. This book was released on 2017-05-03 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the fascinating recent advances made concerning the chaos, stability and instability of semiconductor lasers, and discusses their applications and future prospects in detail. It emphasizes the dynamics in semiconductor lasers by optical and electronic feedback, optical injection, and injection current modulation. Applications of semiconductor laser chaos, control and noise, and semiconductor lasers are also demonstrated. Semiconductor lasers with new structures, such as vertical-cavity surface-emitting lasers and broad-area semiconductor lasers, are intriguing and promising devices. Current topics include fast physical number generation using chaotic semiconductor lasers for secure communication, development of chaos, quantum-dot semiconductor lasers and quantum-cascade semiconductor lasers, and vertical-cavity surface-emitting lasers. This fourth edition has been significantly expanded to reflect the latest developments. The fundamental theory of laser chaos and the chaotic dynamics in semiconductor lasers are discussed, but also for example the method of self-mixing interferometry in quantum-cascade lasers, which is indispensable in practical applications. Further, this edition covers chaos synchronization between two lasers and the application to secure optical communications. Another new topic is the consistency and synchronization property of many coupled semiconductor lasers in connection with the analogy of the dynamics between synaptic neurons and chaotic semiconductor lasers, which are compatible nonlinear dynamic elements. In particular, zero-lag synchronization between distant neurons plays a crucial role for information processing in the brain. Lastly, the book presents an application of the consistency and synchronization property in chaotic semiconductor lasers, namely a type of neuro-inspired information processing referred to as reservoir computing.
Author : Connie J. Chang-Hasnain
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.E/5 ( download)
Download or read book Advances in Vertical Cavity Surface Emitting Lasers written by Connie J. Chang-Hasnain and published by . This book was released on 1997 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Erwin K. Lau
Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.:/5 (35 download)
Download or read book High-speed Modulation of Optical Injection-locked Semiconductor Lasers written by Erwin K. Lau and published by . This book was released on 2006 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ignace Gatare Gahangara
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Polarization switching, locking and synchronization in VCSELs with optical injection written by Ignace Gatare Gahangara and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le laser à cavité verticale émettant par la surface (VCSEL ou Vertical-Cavity Surface-Emitting Laser) comporte des avantages compétitifs par rapport aux lasers émettant par le côté. Le VCSEL présente souvent deux modes de polarisation linéaire orthogonaux avec des fréquences et des gains optiques presque identiques. Dès lors, de faibles perturbations telles que des modifications du courant d injection ou de la température peuvent induire des basculements de polarisation. Toutefois, en utilisant un schéma d injection optique d un faisceau laser externe, il est possible de contrôler ces instabilités de polarisation. Nous nous intéressons au contrôle du basculement de polarisation, à la bistabilité de polarisation ainsi qu à la compétition des modes transverses d un VCSEL soumis à injection optique de polarisation orthogonale. En variant les paramètres d injection¡(puissance injectée et désaccord en fréquence entre le laser maître et le VCSEL), nous montrons que le basculement de polarisation implique des dynamiques non linéaires telles le mélange d ondes, le cycle limite, la résonance subharmonique ainsi qu une route de doublement de période vers le chaos optique. L analyse des bifurcations sous-jacentes permet de dresser une cartographie des dynamiques de basculement de polarisation du VCSEL. orthogonaux affecte la qualité de la synchronisation du chaos. Ces résultats sont intéressants dans le cadre du développement de liaisons de communication sécurisée par chaos optique. Dans notre thèse, nous étudions également la synchronisation du chaos de VCSELs dans un schéma de couplage unidirectionnel. Nous montrons que la compétition des modes de polarisation linéaire.
Author :
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.3/5 (91 download)
Download or read book Vertical-cavity Surface-emitting Lasers written by and published by . This book was released on 2001 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chun Lei
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 : 9780819489197
Total Pages : 266 pages
Book Rating : 4.4/5 (891 download)
Download or read book Vertical-Cavity Surface-Emitting Lasers XVI written by Chun Lei and published by SPIE-International Society for Optical Engineering. This book was released on 2012 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes Proceedings Vol. 7821
Author : Francois Patrice Didier Brown de Colstoun
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Optical instabilities in vertical-cavity surface-emitting lasers (PHD). written by Francois Patrice Didier Brown de Colstoun and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
