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Design And Development Of A Multi Wavelength Brillouin Erbium Long Band Fabry Perot Fiber Laser
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Book Synopsis Design and Development of a Multi-wavelength Brillouin/erbium Long-band Fabry Perot Fiber Laser by : Tarak Ali Haddud
Download or read book Design and Development of a Multi-wavelength Brillouin/erbium Long-band Fabry Perot Fiber Laser written by Tarak Ali Haddud and published by . This book was released on 2004 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-wavelength fiber lasers operating in the long-wavelength band (L-band) wavelength region are needed as laser source for applications such as wavelength-divison-multiplexed (WDM) communication systems, fiber sensors, spectroscopy and fiber optical fiber gyroscopes. Multi-wavelength fiber laser are emerging as attractive alternative technologies for wavelength-selectable WDM. They are used as source for direct compatibility with the fiber-optic transmission medium, excellent amplifying properties of rare-earth doped fibers, Brillouin gain, rapidly contiuing progress in novel fiber gain media, maturity and robustness of the laser diode pumps used and availability of fiber-based components. The multi-wavelength laser applications of interest to this work have distinct performance requirement. This requirement is the need for wide tunability (the ability to tune the lasing emissio through a wide range of wavelength). In this thesis, the design and development of a multi channel continous wave Brillouin/Erbium L-band fiber laser (BEFL), with a novel loop mirror configurations, has been studied experimentally. The design parameters of multi-wavelength fiber laser (launched pump powers , single mode optical fiber lengths and Brillouin wavelengths0, the multi wavelength Brillouin/erbium linear fiber laser configuration with bi-directional pumping is demonstrated. Throughout this work diffreent lengths of single mode optical fiber with various launched pump powers and Brillouin wavelengths have been examined to extract the optimum output performance of a BEFL. The performance of the BEFL is presented in terms of threshold pump power, output peak power, tuning range and the number od Stokes. This development fiber loop configuration exhibits considerably high performance. Twenty-four of Stokes with 10 nm tuning range and efficient output powers were obtained.
Book Synopsis All-optical Generation of Multiwavelength Brillouin-erbium Fiber Laser in Long-wavelength Band by : Mohammed Hayder Al-Mansoori
Download or read book All-optical Generation of Multiwavelength Brillouin-erbium Fiber Laser in Long-wavelength Band written by Mohammed Hayder Al-Mansoori and published by . This book was released on 2008 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, the design and development of the multiwavelength Brillouin-Erbium fiber laser (BEFL) sources operating in the L-band transmission window is presented and characterized. Four different laser designs have been successfully demonstrated using a combination of stimulated Brillouin scattering effect in optical fiber and Erbium-doped fiber (EDF) amplification. The experimental results obtained from the characterization and optimization of these laser structures are the threshold power, number of the Stokes signals generated, Stokes signals power, self-lasing oscillation and the tuning range. The results are taken from the studies which have been carried out to analyze the effects of 1480 nm pump power, Brillouin pump (BP) power, BP wavelength and single mode fiber (SMF) length. The first laser structure is an efficient multiwavelength L-band BEFL pumped by a 1480 nm pump laser in a linear cavity configuration with direct BP injection into SMF. The issue of low gain efficiency of the L-band in the EDF lasers is resolved with the efficient linear cavity structure and the 1480 nm pumping scheme. The proposed laser structure exhibits a low threshold power of 18 mW and a maximum number of 26 stable output channels with 0.089 nm (10.5 GHz) channels spacing. The second and third laser structures are focused on the enhanced multiwavelength BEFL, in which the BP power is pre-amplified before entering the SMF within the laser cavity. The BP pre-amplification techniques - single pass and double pass represent a new mode of operation of multiwavelength BEFL's. This intra-cavity BP pre-amplification provided by the EDF has created higher intensity of Brillouin Stokes signals generated in the single-mode fiber that leads to the homogenous gain saturation. This effect is able to suppress the built-up of the self-lasing cavity modes in a wider wavelength range and the number of output channels is also enhanced as compared to the conventional BP direct injection. Output of more than 33 laser channels is achieved and the tuning range is almost doubled than that of the conventional BP direct injection technique. Finally, for the fourth laser configuration, the multiwavelength BEFL incorporates either the amplified fiber loop mirror (AFLM) or non-linear amplified fiber loop mirror filter (AFLMF). Fifty-four stable output channels, with 0.089 nm channels spacing, have been achieved. A non-linear AFLMF which induces wavelength-dependent cavity loss and serves as an amplitude equalizer is employed to shift and flatten the EDF gain spectrum. Two control mechanisms have been demonstrated to shift and flatten the EDF gain profile through the adjustment of the polarization controller in the AFLMF. Therefore, the multiwavelength BEFL could be tuned over the whole L-band window from 1570 nm to 1610 nm with the average number of 24 output channels. In addition, flattening the EDF laser oscillation overcomes the requirements of the BP wavelength tuning, in conjunction with the adjustment of the polarization controllers in the fiber loop.
Book Synopsis Design and Development of a Novel Multiwavelength Brillouin-erbium Fiber Laser by : Mohammed Hayder Al-Mansoori
Download or read book Design and Development of a Novel Multiwavelength Brillouin-erbium Fiber Laser written by Mohammed Hayder Al-Mansoori and published by . This book was released on 2004 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-wavelength laser sources with constant wavelength spacing are of great interest in dense wavelength division multiplexing (DWDM) communication and sensors system. As the transmission capacity of optical communication systems is approaching a few Tb/s WDM method in recent years, multiwavelength generation technology becomes more important, considering that the complexity and the cost of the source will increase as the number od WDM channel increases. In this thesis, the design and development of a novel architecture of multi-wavelength Brilloui/Erbium fiber laser (BEFL) utilizing a linear cavity fiber loop technique is presented. Simultaneous and stable multiple wavelength lasing in a linear cavity have been achieved. The results are based completely on the experimental work. The requirement of internal feedback that is commonly used for multiple wavelengths Brillouin/Erbium fiber laser using a ring configuration is achieved by the proposed linear cavity design. This design used only a single 980 nm pump laser for its multiple wavelengths operation. Based on the design parameters namely: 980 nm pump power, Brillouin pump wavelength and single mode fiber (SMF) the performance of a novel BEFL is presented in terms of threshold power, Stokes signal peak power, number of Stokes generated , stability of the Stokes and tuningr range. Throughout this work, three lengths of SMF-fiber are used, 1.9 km, 8.8 km and 25 km. The optimization of Brillouin pump wavelength, power and Erbium gain led to a maximum possible number of Stokes. Twenty-two stable output laser lines with 10.88 GHz (0.088 nm) line spacing were obtained at 1558 nm that was the peak of Erbium-doped fiber (EDF). The injected Brillouin pump power into the 8.8 km SMF-fiber was set at 0.9 dBm and the EDF was pumped by 100 mW of 980 nm pump laser. The most efficient cascaded Brillouin Stokes operation occured at the peak of Erbium gain centered on 1558 nm. The number of Stokes decreased as the Brillouin pump increased in the highest region of Erbium gain. On the contratry, the number of Stokes was proportional to the intensity of the Brillouin pump power outside this wavelenght range. The best performance and conversion efficiency of Brillouin pump to the BEFL signal occur at the lower levels of injected Brillouin pump power. A low threshold of 4 mW pump power with 2.3 mW launched Brillouin pump into the 8.8 km of SMF-fiber at 1558 nm was obtained. The tuning range of the Stokes signal must be taken into account both the Brillouin and EDF pump power, at a fixed EDF pump power the Stokes signal can be tuned wider at a higher Brillouin pump power while higher EDF pump power produces smaller tuning range.
Book Synopsis Tunable Multiwavelength Brillouin Erbium Fiber Laser Designs for High Capacity Optical Communication System by : Abdulmoghni Ali Waza'a Al-Alimi
Download or read book Tunable Multiwavelength Brillouin Erbium Fiber Laser Designs for High Capacity Optical Communication System written by Abdulmoghni Ali Waza'a Al-Alimi and published by . This book was released on 2014 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multiwavelength Brillouin Semiconductor Fiber Lasers by : Alaa Hayder
Download or read book Multiwavelength Brillouin Semiconductor Fiber Lasers written by Alaa Hayder and published by . This book was released on 2008 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Development of a Novel Tunable Erbium-doped Fiber Laser by : Mohammed Alfayturi S.Howieg
Download or read book Design and Development of a Novel Tunable Erbium-doped Fiber Laser written by Mohammed Alfayturi S.Howieg and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widely tunable single channel fiber lasers operating in the 1550nm wavelength region are needed as laser source for applications such as wavelength-division- multiplexed (WDM) communication systems, fiber sensors, spectroscopy, and optical fiber gyroscopes. Fiber lasers are emerging as an attractive alternative technology for wavelength-selectable WDM source for direct compatibility with fiber-optic transmission medium, excellent amplifying properties of rare-earth doped fibers, rapidly continuing progress in novel fiber gain media, maturity and robustness of the laser diode pumps used, and availability of fiber-based components. The tunable laser applications of interest in this work have distinct performance requirement, which is the need for wide tunability (the ability to tune the lasing emission through a wide range of wavelengths).
Book Synopsis Design and Characterisation of Brillouin Erbium-ytterbium Fiber Laser (B-EYFL) as a Multiwavelength Source by : Lawrence Sii Ying Ting
Download or read book Design and Characterisation of Brillouin Erbium-ytterbium Fiber Laser (B-EYFL) as a Multiwavelength Source written by Lawrence Sii Ying Ting and published by . This book was released on 2008 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multi-wavelength fiber laser light sources based on Erbium and Brillouin gain by : Suhairi Saharudin
Download or read book Multi-wavelength fiber laser light sources based on Erbium and Brillouin gain written by Suhairi Saharudin and published by . This book was released on 2006 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multi-wavelength Brillouin-erbium Fiber Laser Utilizing Bismuth-oxide Erbium Doped Fiber Incorporating High and Low Nonlinear Fibers by : Ramzia Salem
Download or read book Multi-wavelength Brillouin-erbium Fiber Laser Utilizing Bismuth-oxide Erbium Doped Fiber Incorporating High and Low Nonlinear Fibers written by Ramzia Salem and published by . This book was released on 2011 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Physics written by and published by . This book was released on 2008 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Passively Mode-locked Erbium-doped Fiber Lasers Using Multiple Quantum Well Saturable Absorbers by : Michael Joseph Hayduk
Download or read book Passively Mode-locked Erbium-doped Fiber Lasers Using Multiple Quantum Well Saturable Absorbers written by Michael Joseph Hayduk and published by . This book was released on 1997 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of the mode-locking process in erbium-doped fiber lasers (EDFL's) operating at 1.55 microns using multiple quantum well saturable absorbers is presented. The self-starting passively mode-locked laser was constructed in a Fabry-Perot configuration using the saturable absorber as the back reflector of the cavity. Picosecond pulses that range from 14.2 to 38.8 ps were generated using a series of saturable absorbers. The pulse widths were dependent upon the optical properties of the saturable absorber used as the mode-locking element. The output power of the EDFL varied from 0.2 to 6.7 mW and was also dependent upon the saturable absorber used in the cavity. Soliton mode-locking using saturable absorbers was the mechanism responsible for the generation of the picosecond pulses by the EDFL. The long-lived carrier lifetime in the quantum wells was the primary optical property of the saturable shorter that determined the final pulse width.
Download or read book Optics Letters written by and published by . This book was released on 2006 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Ivan Divliansky Publisher :Institution of Engineering and Technology ISBN 13 :1785617516 Total Pages :400 pages Book Rating :4.7/5 (856 download)
Book Synopsis Advances in High-Power Fiber and Diode Laser Engineering by : Ivan Divliansky
Download or read book Advances in High-Power Fiber and Diode Laser Engineering written by Ivan Divliansky and published by Institution of Engineering and Technology. This book was released on 2019-12-30 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in High-Power Fiber and Diode Laser Engineering provides an overview of recent research trends in fiber and diode lasers and laser systems engineering. In recent years, many new fiber designs and fiber laser system strategies have emerged, targeting the mitigation of different problems which occur when standard optical fibers are used for making high-power lasers. Simultaneously, a lot of attention has been put to increasing the brightness and the output power of laser diodes. Both of these major laser development directions continue to advance at a rapid pace with the sole purpose of achieving higher power while having excellent beam quality. The book begins by introducing the principles of diode lasers and methods for improving their brightness. Later chapters cover quantum cascade lasers, diode pumped high power lasers, high average power LMA fiber amplifiers, high-power fiber lasers, beam combinable kilowatt all-fiber amplifiers, and applications of 2 μm thulium fiber lasers and high-power GHz linewidth diode lasers. Written by a team of authors with experience in academia and industrial research and development, and brought together by an expert editor, this book will be of use to anyone interested in laser systems development at the laboratory or commercial scale.
Book Synopsis Multiwavelength Brillouin/erbium Fiber Laser Assisted by Bismuth-based Erbium-doped Fiber Amplifier by : Nurul Shahrizan Shahabuddin
Download or read book Multiwavelength Brillouin/erbium Fiber Laser Assisted by Bismuth-based Erbium-doped Fiber Amplifier written by Nurul Shahrizan Shahabuddin and published by . This book was released on 2009 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of a Tuneable Multi-wavelength Erbium Doped Fibre Laser Using Periodic Filtering and Phase Modulation by : Mohammad Aleem Mirza
Download or read book Design of a Tuneable Multi-wavelength Erbium Doped Fibre Laser Using Periodic Filtering and Phase Modulation written by Mohammad Aleem Mirza and published by . This book was released on 2008 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Multiwavelength Erbium-ytterbium Co-doped Fiber Laser by : Mansour Dastmalchi
Download or read book A Multiwavelength Erbium-ytterbium Co-doped Fiber Laser written by Mansour Dastmalchi and published by . This book was released on 2007 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A fiber ring laser, using erbium-ytterbium co-doped double clad fiber is proposed and demonstrated to produce a medium power multiwavelength fiber laser. The experimental results show that the ring resonator configuration can produce more output power compared to a laser based on bidirectional pumping scheme in Fabry-Perot resonator configuration. To stabilize the lasing lines we used an unpumped erbium doped fiber as saturable absorber.
Book Synopsis Design of a Tuneable Multi-wavelength Erbium Doped Fibre Laser Using Periodic Filtering and Phase Modulation by : Mohammad Aleem Mirza
Download or read book Design of a Tuneable Multi-wavelength Erbium Doped Fibre Laser Using Periodic Filtering and Phase Modulation written by Mohammad Aleem Mirza and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
