Types of optical amplifiers, raman amplifier vs edfa. Applications of semiconductor optical amplifiers mdpi books. Products amphotonix semiconductor optical amplifiers. Broadband high gain 30db in 10101090nm range strong linear polarization rohs compliance applications. This semiconductor optical amplifier is intended for use in 0nm transmission systems including access, metro and regional applications where the soa increases the signal power to overcome losses associated with for example, passive optical components. Chip is essentially an antireflection coated fp laser industry standard butterfly packaging cost comparable to edfa pump laser key advantage. For more information on amplifiers, see the optical amplifiers tab above. Development of semiconductor laser for optical communication. Semiconductor optical amplifier device preamplifier type ipsad9 10nm features wide optical bandwidth low noise figure low polarization sensitivity mqw design gain flatness over wavelength builtin optical isolator mini 8pin butterfly housing. In the paper all optical gates based semiconductor optical amplifier soa are used which are mainly based on soa nonlinear phenomena like cross gain modulation xgm, cross phase modulation xpm. Semiconductor optical amplifiers booster optical amplifiers are amplifiers which use a semiconductor to provide the gain medium. The amplifier market game changer is the same today as it was almost 10 years ago. Semiconductor optical amplifier driver analog modules.
Fiber laser, fiber sensor, ring laser, semiconductor optical amplifier, optical sensor. Semiconductor optical amplifierbased alloptical gates for highspeed optical processing kristian e. Shenoy, temperature dependence of operational characteristics of semiconductor optical amplifier, in 12th international conference on fiber optics and photonics, osa technical digest online optical society of america, 2014, paper m4a. Semiconductor optical amplifiers soas have proven to be versatile and multifunctional devices that are key building blocks for optical networks. Us6310720b1 polarization insensitive semiconductor. Semiconductor optical amplifier an overview sciencedirect. Optical gain, gain bandwidth, saturation power level, and noise figure are among the most important parameters of an optical amplifier. The output of the soa is optically coupled to the unit. Reflective semiconductor optical amplifier ch6805 rsoa1550cri text. Rare earth doped fiber amplifiers erbium edfa 1500 nm, praseodymium. Bowers, hyundai park, yinghao kuo, and alexander w. In general, a repeater includes a receiver and transmitter. Amis model 7612a semiconductor optical amplifier driver is ideal for driving 14pin butterfly packaged soa or boa modules for use as power boosters, optical switch, wavelength conversion and others.
Currently it is not possible to create a fully optical communication system without a software tool which simulates an optical communication line in real conditions prior to its construction. During operation as an optical amplifier, light is coupled into the waveguide at z 0. Semiconductor optical amplifier an electrical current is passed through the device that excites electrons in the acve region. For amplication at 1550 nm, we also offer a semiconductor optical amplifier soa that provides polarizationinsensitive amplification at a lower maximum gain than the boa counterpart. Pdf optical bistability in verticalcavity semiconductor. Gains of up to 29 db are reported at a gain ripple of 3 db. Alloptical signal regeneration based on gainclamped.
Integrated optical amplifiers on silicon waveguides john e. Yet, the semiconductor optical amplifier is of small size and electrical pumped, which is often less expensive than edfa. The range is deduced from multiple contacts along the soa. Investors and technologists alike believed that the market would need small amounts of amplification for a large number of applications. Photonic integrated semiconductor optical amplifier switch circuits citation for published version apa. Photonic integrated semiconductor optical amplifier switch. The soa amplifies the optical signal received and outputs the amplified signal. The intelligence model is designed using the artificial neural network ann and genetic algorithm ga. This book is a printed edition of the special issue applications of semiconductor optical amplifiers that was published in applied sciences download pdf. Experimental setup the amplifier is also an 850nm verticalcavity semiconductor optical amplifier, which is composed of two high reflectivity distributed bragg reflector dbr mirrors to form a high finesse fabryperot cavity. Semiconductor optical amplifiers soas light reading.
Semiconductor optical amplifierbased alloptical gates. It is essentially like a laser diode where the end mirrors have been replaced with antireflection coatings. 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. Pdf on aug 3, 2003, michael connelly and others published semiconductor optical amplifiers and their applications find, read and cite all.
Finding application in all optical 3rregeneration systems. Semiconductor optical amplifiers soas are a versatile core technology and the basis for the implementation of a number of key functionalities central to the. They can be integrated into arrays of amplifying switching and gating devices. Dec 16, 2014 without the need to first convert it to an electrical signal, the optical amplifiers are now used instead of repeaters.
The first fiber provides for optical input to the soa. Semiconductor optical amplifier at 915nm, 980nm, 1060nm, 10nm, and 1550nm in 14pin. Us6381066b1 integrated semiconductor optical amplifier. Integrated optical amplifiers on silicon waveguides. A semiconductor optical amplifier soa is essentially a laser diode ld with no feedback from its input and output ports and hence is also referred to as a travelingwave amplifier twa. Semiconductor optical amplifier soa, erbiumdoped fiber amplifier edfa, and fiber raman amplifier are presented. Semiconductor optical amplifier soafiber ring laser and. Semiconductor optical amplifier device pre amplifier type ipsad9 10nm features wide optical bandwidth low noise figure low polarization sensitivity mqw design gain flatness over wavelength builtin optical isolator mini 8pin butterfly housing. Chapter 9 semiconductor optical amplifiers cornell university.
A semiconductor optical amplifier is an optical amplifier based on a semiconductor gain medium. An optical amplifier module that is insensitive to polarization comprises a first fiber, a second fiber, a semiconductor optical amplifier soa, and a polarization dependent loss pdl unit. Semiconductor optical amplifier at 915nm, 980nm, 1060nm, 10nm, and 1550nm in 14pin butterfly package. It is sensitive to temperature and input optical frequency. The structure is much the same, with two specially designed slabs of semiconductor material on top of each other, with. Our line of benchtop optical amplifiers includes ytterbiumdoped fiber amplifiers ydfas, a praseodymiumdoped fluoride fiber amplifier pdfa, and erbiumdoped fiber amplifiers edfas. Simulation of polarization dependent gain in semiconductor.
Applications note no 0002 soas as preamplifiers page 2 semiconductor optical amplifiers linear operating regime. Using numerical simulations, we show that crossgain modulation between pairs of counterpropagating pulses within a semiconductor optical amplifier can be used to detect the range and reflectivity of a target, forming a compact timeofflight laser ranger. The aim of this article is to establish a comparison between the edfa erbium doped fibre amplifier and soa semiconductor optical amplifier optical amplifiers in the wdm wavelength division. Sweptsource, tunable lasers booster optical amplifiers optical preamplifiers optical coherence tomography oct specifications. Semiconductor optical amplifiers there are two types of soas. Comparison of the optical amplifiers edfa and soa based on. The semiconductor optical amplifier soa is a versatile candidate technology. Consequently, we leveraged our experience in optical device fabrication technologies to prototype a polarization independent semiconductor optical amplifier soa for the 1.
Applications of semiconductor optical amplifiers in terms of the functionality semiconductor optical amplifier is categorized into three areas. Introduction as early as the 1960s it was recognized that a gallium arsenide laser diode could be used as an amplifier of infrared light if the reflectivity of its facets was reduced by means of antireflection coatings crowe 1966. The required data for training the ann are collected from the. Semiconductor optical fiber amplifier operates in both the 01550nm transparent window but edfa operates only in 1500nm window. They have a similar structure to fabryperot laser diodes but with antireflection design elements at the end faces. Photonic integrated semiconductor optical amplifier switch circuits. Reflective semiconductor optical amplifier characterization. Semiconductor optical amplifiers university of strathclyde. Thorlabs optical amplifiers are available as complete benchtop systems or as pigtailed butterfly packages. The soa also provides gain to the optical pulses reflected off the target.
They represent advances in research, technology and commercial trends in the area of semiconductor optical amplifiers. When photons light travel through the acve region it can cause these electrons to lose some of their extra energy in the form of. Finally, when light comes out at z l, its power is much higher compared to what it was at z 0. Soas are important components for optical communication systems with applications as inline amplifiers and as functional devices in evolving optical networks. A semiconductor optical amplifier works in a similar way to a basic laser. An optical pre amplifier is used at the end of the optical fiber link in order to increase the sensitivity of an optical receiver. 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. Semiconductor optical amplifiers soas 9 and planar waveguide based optical amplifiers 10 were pursued aggressively. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Semiconductor optical amplifiers soas as preamplifiers.
Among them, the main amplifier technologies are doped fiber amplifier eg. This paper reports a practical technique for making a highperformance semiconductor optical amplifier by combining tiltedcavity and a simple antireflective facet coating. Semiconductor optical amplifiers for passive optical networks. Optimization of a quantumdot semiconductor optical. A first fiber pigtail enters this package via a feedthrough to connect to the bench and terminate above the bench. We first present a simple, accurate, and fast model based on the feedforward ann.
Optical amplifiers venkat venkataramanan instute for opcal. Amplifier rate equations and operating characteristics. An optical preamplifier is used at the end of the optical fiber link in order to increase the sensitivity of an optical receiver. Recent advances in semiconductor optical amplifiers. Photonic integrated semiconductor optical amplifier switch circuits 207 025 20 15 10 5 0 1 2 2 1 3 0 4 1 input power per wavelength channel dbm power penalty db switch fabric gain db fig. This optical gain is due to stimulated emission associated with light emission created by recombination of electrons and holes. The driver is implemented as a transconductance amplifier analog voltage in, scaled current out and includes an onboard tec controller for. The material gain of the active region can be described by. Soa is miniature in size and can be integrated with other photonic devices, but may suffer. This invaluable book provides a comprehensive treatment of the design and applications of the semiconductor optical amplifier soa. Semiconductor optical amplifiers world scientific publishing co. 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. For the love of physics walter lewin may 16, 2011 duration. With the progress of optical transmission technology, various kinds of semiconductor lasers have been developed for the application to wavelength division multiplexing, high speed, low power consumption, and photonic integration.
This book is a printed edition of the special issue applications of semiconductor optical amplifiers that was published in applied sciences download pdf add this book to my library. In this paper, we proposed an intelligence model for the optimal design of the quantumdot semiconductor optical amplifier qdsoa. Haridim and others published semiconductor optical amplifiers find, read and cite all the research you need on researchgate. Electrical drive current weak optical signal in ar ar amplified optical signal semiconductor cavity. Today, we are going to study and compare different types of optical amplifiers in this paper. Semiconductor optical amplifier soa similar to a laser cavity. Semiconductor optical amplifiers concordia university. Semiconductor optical amplifier is selfcontained and unified in presentation. Many of the advances in optical networks have been made possible by the advent of the optical amplifier. These capabilities include virtually unlimited bandwidth to carry communication services of almost any kind, and full transparency that allows terminal upgrades in capacity and flexible routing of channels. Optical gain is the most important requirement for the realization of a semiconductor laser because it describes the optical amplification in the semiconductor material.
Typical performance of 2 mm long qdsoa alfree quantum dash semiconductor optical amplifier, based on buried ridge stripe technology wide optical bandwidth. Optical fiber sensors are widely used in various uses since it has many advantages. In the typical implementation, this hermetic package is a standard 0. Simulated input power dynamic range for a 2x2 soa switch fabric williams, 2006. It can be used as an advanced text by graduate students and by practicing engineers. A semiconductor optical amplifier system comprises a hermetic package.
Edfa, semiconductor optical amplifier soa and fiber raman amplifier. Application of semiconductor optical amplifier soa mdpi. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. The semiconductor optical amplifier soa is a versatile candidate technology for executing such operations. Wavelength division multiplexing passive optical network wdmpon is considered to be one of the most potential optical access network technologies since it has the advantages of. As the light propagates inside the waveguide it gets amplified. Semiconductor optical amplifiers in optical communication.
A semiconductor optical amplifier having a gain of 25 db, noise figure of 5 db, and 3db saturation output power of 20 dbm, over the record widest. As we know, there are several types of optical amplifiers. Spiekman genoa corporation, eindhoven, the netherlands 1. The lasing threshold current of the vcsoa was about 5. Recent advances in semiconductor optical amplifiers and their applications. The driver is implemented as a transconductance amplifier analog voltage in, scaled current out and includes an onboard tec controller for temperature stabilized operation of the optical. Amplifier types there are three most important types of optical amplifiers. Semiconductor optical amplifier device preamplifier type. Most of them detect an optical intensity change as a sensing signal caused by change in polarization, phase, loss, and fluorescence. Semiconductor optical amplifier leo spiekman, david piehler, alphion corp.
Pdf semiconductor optical amplifiers and their applications. We conduct a thorough comparison of two basic notch filters employed to mitigate the pattern effect that manifests when semiconductor optical amplifiers soas serve linear amplification purposes. Stubkjaer invited paper abstract semiconductor optical amplifiers are useful building blocks for alloptical gates as wavelength converters and otdm demultiplexers. Very large optical bandwidth up to 150nm polarization independent. Before the comparison of the different types of optical amplifiers, lets take a closer look at fiber optic amplifier. Simulation of polarization dependent gain in semiconductor optical amplifier. All optical signal regeneration based on gainclamped semiconductor optical amplifiers mingshan zhao a dissertation for the degree of doctor in applied science. Osa temperature dependence of operational characteristics.
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