Pdf semiconductor optical amplifiers and their applications. Keywords modulation multiplexer phase signal analog communication communication systems computer integrated circuit logic material modeling network semiconductor transmission. Many of the advances in optical networks have been made possible by the advent of the optical amplifier. Er bium doped fiber amplifier edfa is commonly used for the amplification of 1. The contributions comprised in the thesis are done. Design and simulation for the fabrication of integrated semiconductor optical logic gates by aleksandra markina s. Semiconductor optical amplifiers there are two types of soas. Pdf on aug 3, 2003, michael connelly and others published semiconductor optical amplifiers and their applications find, read and cite all the research you need on researchgate. The static and dynamic properties of these amplifiers are discussed extensively in. Fabry perot amplifiers fpa when the light enters fpa it gets amplified as it reflects back and forth between the mirrors until emitted at a higher intensity. It is essentially like a laser diode where the end mirrors have been replaced with antireflection coatings.
Berceli tibor budapest university of technology and economics department of broadband infocommunications and electromagnetic theory 2009, budapest introduction. Studies on placement of semiconductor optical amplifiers. Slow and fast light effects in semiconductor optical amplifiers for. This thesis aims at providing a numerical tool that simulates the noise effects when applying optical amplifiers in highspeed long haul transmission systems. Our essays writers are supported by our administration amplifier applied optical pdf physics semiconductor soa thesis group who are there to help you at whatever point you require. Aug 11, 2017 the noise figure of soa optical amplifier is typically higher, the gain bandwidth can be similar, soas exhibit much stronger nonlinear distortions in the form of selfphase modulation and fourwave mixing. Tuning is achieved with the help of an intracavity fabryperot fp optical filter. Optical amplifiers thorlabs optical amplifiers are available as complete benchtop systems or as pigtailed butterfly packages. Development of semiconductor laser for optical communication. A semiconductor optical amplifier is an optical amplifier based on a semiconductor gain medium. Demonstrating effective alloptical processing for ultrafast. Time domain simulation of optical amplifiers incorporating. A study of the origin and applications of nonlinear.
Introduction to optical amplifiers 417 a raman amplifier is distributed over a long span of optical fiber. Optical amplifiers are used to create laser guide stars which provide feedback to the adaptive optics control systems which dynamically adjust the shape of the mirrors in the largest astronomical telescopes. Gain control in semiconductor optical amplifier enlighten. Awad, doctor of philosophy, 2003 dissertation directed by. Optical amplification is produced by the process ofstimulated emission induced by a population inversion in a lasing medium. The semiconductor optical amplifier soa structure parameters for inline amplifier is optimized to obtain low cross talk in multichannel wdm systems at nil power penalty with sufficient gain. Reflective semiconductor optical amplifier characterization. This thesis examines the unique properties of gallium arsenide gaasbased quantumdot semiconductor optical amplifiers for optical communication networks, introducing readers to their fundamentals, basic parameters and manifold applications. The effects of input power, noise prefiltering and semiconductor optical amplifier length on the conversion efficiency and optical signaltonoise ratio were examined. Our line of benchtop optical amplifiers includes ytterbiumdoped fiber amplifiers ydfas, a praseodymiumdoped fluoride fiber amplifier pdfa, and erbiumdoped fiber amplifiers edfas. Pdf download semiconductor optical amplifiers free. For improving optical output power of the laser mod ule, the polarization and the wavelength multiplexing were also used. An optical pre amplifier is used at the end of the optical fiber link in order to increase the sensitivity of an optical receiver. Fourwave mixing fwm in semiconductor optical amplifiers soas is investigated for wavelength conversion in highspeed, all optical networks.
This is to certify that the thesis entitled some studies on semiconductor optical amplifier and kerr type optical switching, submitted by soma dutta to the university of burdwan, burdwan, is a record of bona fide research work under my supervision. Amplifier types there are three most important types of optical amplifiers. Typically, the optical pump is introduced at the end of a length of fiber in order to provide optical gain that increases towards the end of the fiber. Liboironladouceur photonic systems group, department of electrical and computer engineering, mcgill university soa osa attenuator laser gain characterization ics laser soa osa attenuator the above characterization of a commercial soa, the kamelianopb1215, can. Modeling, signal regeneration and conversion by andrej marculescu. Electrical drive current weak optical signal in ar ar amplified optical signal semiconductor cavity.
Semiconductor optical amplifiers to extend the reach of. Semiconductor optical amplifiers research collection eth zurich. Professor julius goldhar department of electrical and computer engineering in optical communications, clock recovery, optical time demultiplexing, and 3r regeneration are known as optical signal processing. Application and study of multifunctional semiconductor optical amplifier in subcarrier multiplexed optical networks phd thesis gerhatne udvary eszter supervisor. Pdf on aug 3, 2003, michael connelly and others published semiconductor optical amplifiers and their applications find, read and cite all. Characterization of semiconductor optical amplifiers. Modelling and characterization of laterallycoupled distributed feedback laser and semiconductor optical amplifier by julie efiok nkanta thesis submitted to the faculty of graduate and postdoctoral studies in partial fulfillment of the requirements for the doctor of philosophy degree in physics department of physics. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. This thesis is mainly concerned with the use of semiconductor optical amplifiers soas in wavelength division multiplexed wdm broadcast topologies viz. Semiconductor optical amplifiers booster optical amplifiers are amplifiers which use a semiconductor to provide the gain medium. We show amplitude modulation in the output pulses of a switch arising from gain saturation.
Nyquist wdm for ftth applications using reflective. Application and study of multifunctional semiconductor. The results contained in this thesis have not been submitted either in part or in full to. Semiconductor optical amplifier and coding in ook system.
It applies to semiconductor optical amplifiers or erbium doped fiber amplifiers. Text or symbols not renderable in plain ascii are indicated by. The two main optical amplifier types can be classified as semiconductor optical amplifiers soas and dopedfiber amplifiers dfas. A study of the origin and applications of nonlinear polarization rotation in semiconductor optical amplifiers a thesis for the degree of doctor of philosophy presented to dublin city university dcu by brendan f.
This thesis is concerned with the study of characteristics of commercial semiconductor optical amplifierssoas and their employment in gpons for the purpose of packet equalization of upstream bursts in order to provide additional loss budget. First, the optical power of the input signal can be low due to inherent amplification in the device, leading to high power efficiency. Studies on placement of semiconductor optical amplifiers in wavelength division multiplexed star and tree topology networks by yatindra nath singh submitted in fulfilment of the requirement of degree of doctor of philosophy ph. Voltage is applied to the filter which controls the effective cavity length of the ring laser.
Semiconductor optical amplifier in subcarrier multiplexed optical networks phd thesis gerhatne udvary eszter supervisor. The conventional semiconductor optical amplifier soa, on the other hand, is an attractive nonlinear element due to its strong nonlinearity, compactness, power efficiency, and integration. The aim of investigations is to determine the increase in the number of users when soas are. Yet, the semiconductor optical amplifier is of small size and electrical pumped, which is often less expensive than edfa.
Multigbits cmos transimpedance amplifier with integrated photodetector for optical interconnects a ph. Berceli tibor budapest university of technology and economics department of broadband infocommunications and electromagnetic theory 2009, budapest introduction design and build of compound optical circuit consisting. This thesis study focuses on automatic gain control applied on semiconductor optical amplifiers soas. A general introduction to semiconductor gain media as well as theory of interaction of light and semiconductors is given including fundamental physical concepts and properties. The concept of extending the reach of gpon through. Amplifier applied optical pdf physics semiconductor soa thesis. In this thesis, the properties of selfassembled inasingaaspinp quantum dots. Modelling and characterization of laterallycoupled. Our staff work as one large oiled machine in order to provide you with. Nonlinear interactions in semiconductor optical waveguides ehab s. Alloptical wavelength conversion by fourwave mixing in a. A steadystate numerical model of wavelength converters based on crossgain soas is developed. Semantic scholar extracted view of semiconductor optical amplifiers.
All optical processing for ultrafast data networks using semiconductor optical amplifiers jade p. This thesis is concerned with the study of characteristics of commercial semiconductor optical amplifiers soas and their employment in gpons for the purpose of packet equalization of upstream bursts in order to provide additional loss budget. Bidirectional radio over fiber transmission system using. They have a similar structure to fabryperot laser diodes but with antireflection design elements at the end faces. Semiconductor optical amplifier soa similar to a laser cavity. Optical fiber amplification technology, as shown in fig. Finding application in all optical 3rregeneration systems. This invaluable information source provides a comprehensive and detailed treatment of the design and applications of soas. We demonstrate 10 gbitss all optical switching using a semiconductor optical amplifier biased at the transparency current. It is sensitive to temperature and input optical frequency.
They combine in a single element the possibilities of amplification and modulation of an optical signal. Rp photonics encyclopedia semiconductor optical amplifiers, soa. Design and simulation for the fabrication of integrated. Apr 27, 2011 certificate by the supervisorthis is to certify that this technical report performance of semiconductor optical amplifier is a recordof work done by pranab kumar bandyopadhyay, md. Multigbits cmos transimpedance amplifier with integrated. The innovation of optical amplifier greatly con tributed to realize wdm transmission system 18. Eng school of electronic engineering faculty of engineering and computing dublin city university research supervisor. Optical amplifiers download ebook pdf, epub, tuebl, mobi. Phide, quantum dot, semiconductor optical amplifier, metalorganic. Introduction to semiconductor optical amplifiers soas. Studies on placement of semiconductor optical amplifiers in. A time domain model for erbiumdoped fiber amplifier edfa and semiconductor optical amplifier soa, which is capable of.
In this thesis, a tunable erbiumdoped fiber ring laser edfrl is investigated. Chapter 3 wavelength conversion through crossgain modulation in semiconductor optical amplifiers. They can be integrated into arrays of amplifying switching and gating devices. A thesis submitted in partial fulfillment of the requirements.
The chapter is dedicated to the basics and key parameters of semiconductor optical amplifiers soas. The semiconductor optical amplifier has emerged as an important component in many optical fibre communication, switching and signal processing systems. Thesis presented to the academic faculty by indal song in partial fulfillment of the requirement for the degree of doctor of philosophy in electrical and computer engineering georgia institute of technology november, 2004. Nyquist wdm for ftth applications using reflective semiconductor optical amplifiers 2.
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