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. Erbium looks like a silverywhite solid metal when artificially isolated. Mafa 5000 series erbium doped fiber amplifier edfa download datasheet. Optical amplifiers amplify an optical signal directly, without the need to first convert it to. In the pulse method, since the metastable erbium ions in the edfa require a relatively long time to recover the ground state, if the onoff switching cycle of the optical input to the edfa is sufficiently shorter than the recovery time, the ase can be measured directly by measuring the output of the edfa while the optical signal is off. Erbium doped fiber amplifier 30mw400mw edfa booster amplifier advanced lcd type. In the distance range 40120 km, raman and edfa amplifier have compareable qfactor. Also at 120 km edfa, raman and soa have almost the same qfactor. Mafa 5000 series erbium doped fiber preamplifier download datasheet. The term doping refers to the process of using chemical elements to facilitate results. Optisystem manual pdf optisystem getting started the optisystem getting started document is now available for download.
Available online at ijecse edfawdm optical network. Performance analysis of flat gain wideband raman amplifier. This device is an optical amplifier for passive amplification of optical signals in the 1550nm channel band. Erbiumdoped fiber amplifiers are designed to amplify optical signals to increase the optical transmission distance over fiber. Support software, products file request technical support. Mar 03, 2011 edfa stands for erbium doped fiber amplifier and it is one type of many different optical amplifiers. Hybrid edfasoa amplifier design for cwdm network the. The length of edfa amplifier for experimental set up varies. If edfa is placed before smf, it is called pre compensation and if it is used after smf, it is called post compensation. Usually it is the spectral window from about 1450 nm to 1530 nm. It also supports all itu50 ghz and itu25 ghz dwdm grid channels. The maximum eye height is provided by the edfa edfa amplifier for all distance range. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. The gain and noise figure at each changes of both length and pump power are observed, simulated by using optisystem software.
Erbium doped fiber amplifier is the major type of the fiber amplifier used to boost the signal in the wdm fiber optic system, as we know it is wdm that increase the capacity of the fiber. These amplifiers provide high power, high reliability, and superior optical performance. This download was scanned by our antivirus and was rated as clean. Optical amplifier edfa characteristics evaluation optical amplifier nfgain measurements with ms9740a optical spectrum analyzer. The edfa output includes the noise level of the amplified optical signal as well as the ase. You also get erbium doped mm fiber, ytterbium doped mm fiber, measuredindex multimode fiber and parabolicindex multimode fiber amplifier, and other fiber models. The primary difference is that they do not have a resonator. Lumentum offers the most comprehensive portfolio of highperformance amplifiers raman, high power edfas, wide dynamic gain range edfas, edfa arrays in the industry. Analysis of gain and noise in erbium doped fiber optiwave. Doped optical fiber amplifiers pt2 archives optiwave.
The em316ea family of cband edfa optical amplifiers is part of the fiber driver optical multiservice platform solution. Edfas are used to provide amplification in long distance optical. Comparison of the optical amplifiers edfa and soa based on. It features universal dsp, decision, qam sequence generator and qam sequence decoder components. This software enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks. This was simulated by using optisystem simulator, including the. Buy analysis and optimization of an edfa wdm optical network on free shipping on qualified orders. Performance analysis of erbium doped fiber amplifiers and.
Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of amplifier or edfa optical amplifier, raman fiber amplifier, and silicon optical amplifier soa. The user has access to optisystems signal classes and an extensive library of convenience functions. The system is simulated using optisystem software to. The erbiumdoped fiber amplifier edfa is a key device for high capacity wavelength division multiplexing wdm optical communication systems. Erbium doped fiber amplifier edfa for cband optical. One difficulty in implementing a wdm system including edfas is that the. Erbium dopped fiber amplifier edfa basics, working. They enable the characterization of the gain, noise figure, and output power under unsaturated and saturated signal input regime. The gain flattened edfa plays a major role for modern wdm optical application. Its core is the erbiumdoped optical fiber, which is typically a singlemode fiber. To date, the erbium doped fiber amplifier edfa has been widely used in some optical systems, for instance, communication, sensing and measurement. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. An erbium doped fiber amplifier is an optical or ir repeater that amplifies a modulated laser beam directly, without optoelectronic and electrooptical conversion. Gain and noise figure performance of erbiumdoped fiber.
An erbiumdoped fiber amplifier edfa is a device that amplifies an optical fiber signal. An experimental study using optiwave optisystem simulator to observe the performance of erbium doped fiber amplifier edfa and determine its characteristic under varying input power at 1550nm range was carried out. The ap3370 erbiumdoped fiber amplifier edfa modules are designed to meet the need for cband testing of active and passive components. High density wdm transmission system using an edfa.
Emcore erbium doped fiber amplifiers edfa are ideal building blocks for system integrators to extend the fiber links for longhaul signal transport, highperformance supertrunking, high power distribution networks, and sensing and control systems. It is used in the telecommunications field and in various types of research fields. Fiber optical amplifiers, dwdm edfasdh edfasoaeydfa fs. Optiwave software\optisystem 9\samples\optical amplifiers.
Pdf edfawdm optical network design and development. Multicom carries a full line of low noise high power 1550nm optical amplifiers. Edfa, semiconductor optical amplifier soa and fiber raman amplifier. Optiwave optisystem simulator to observe the performance of erbium doped fiber amplifier edfa and determine its characteristic under varying input power at 1550nm range was carried out. This paper initially investigates the design parameters for an edfa erbium doped fiber amplifier simulation perspective. White paper introduction to edfa technology june 2009 1 introduction shortly after their commercialization in the early 1990s, erbium doped fiber amplifiers edfas became a key enabling technology for optical communication networks, and have since comprised the vast majority of all optical amplifiers deployed in the field. Doped optical fiber amplifiers pt1 archives optiwave. With over 30 years experience of the specialty optical fiber industry, fibercore ltd, the world leader in its field, is exclusively dedicated to the design, manufacture and commercialization of specialty fibers. Without the need to first convert it to an electrical signal, the optical amplifiers are now used instead of repeaters. 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. The gain of the edfa will be flattened by optimizing the fiber length and pump power.
With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. Emcore designs and manufactures the most complete and advanced line of optical components and systems for catv broadband transport and access networks. A four stage erbium doped amplifier circuit is implemented. The gain flatness of erbiumdoped fiber amplifier edfa is a key device for wavelength division multiplexing wdm application in modern optical network systems. Finisars single channel micro edfa is a costeffective micro processorcontrolled module for amplifying single channels in the cband. Performance analysis of optical amplifiers edfa and soa. Use of a low pass cosine roll off filter and tuning numerical aperture and fiber length for a specific pump power optimizes the gain flattening. The amplifier is provided in a micro 45x70x12 mm package, and exhibits low power consumption allowing it to be easily i ntegrated onto space and power constrained transponder line cards. The optisystem installer is commonly called optisystem. The bayspecs edfa series products are mainly for metro applications. Erbium doped fiber amplifier edfa is a high performance, small size of the fiber amplifier products.
The internal use of stability high power semiconductor laser, the high stability of wdm, isolator, and high gain erbiumdoped fiber. Modelling simulation and gain flattening improvements. One of the advanced technologies achieved in recent years is the advent of erbium doped. To increase the transmission capacity of dwdm system, raman. A study of erbium doped fiber amplifier edfa amplifier s characteristic and fwm in an optical network using optiwave optisystem simulator. The main scope of this paper is to implement erbium doped fiber amplifier edfa in the range of cband. A gain flattered edfa is simulated with the expected results. Erbium doped fiber amplifier 30mw400mw edfa booster. This unit provides 22 dbm edfa constant output optical amplifier for 1550nm.
Optisystem optisystem enables users to plan, test, and simulate. Analysis and optimization of an edfa wdm optical network. Both these techniques can be combined to produce and. Catv erbium doped amplifier edfa download datasheet 1. Optiamplifier optical fiber amplifier and laser design. This paper discusses the performance of 64 channels of 10 gbps wdm systems with backward multipump raman amplifier. And it is convenient to obtain the output features of the amplifying system in. As we know, there are several types of optical amplifiers. Optimizing the edfa gain for wdm lightwave systems optiwave. Where, erbium is a chemical element of lanthanide series in periodic table. They exhibit high output power, high gain with very low noise.
Jul 04, 2017 semiconductor optical amplifier soa and erbiumdoped fiber amplifier edfa are two of the main types of optical amplifiers, and they were used in this simulation model to analyze their performance, with a data rate of 622 mbs stm4 level and 170 km optical fiber length for each simulation model. Citeseerx erbium doped fiber amplifier edfa for cband. Customized pre amplifier edfa optical amplifier for sdh networks. Optiwave optisystem simulation tool is used to investigate the performance of the different configurations of the hoa. Buy fiber optical amplifiers booster, pre amplifier, inline optical amplifiers for dwdm network distance extension at fs. As a market and technology leader in optical amplifiers for over two decades, lumentum leverages vertical integration and deep knowhow to continue to offer points of. Rp photonics encyclopedia erbiumdoped fiber amplifiers. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Soaedfaraman optical amplifier for dwdm systems at the. This study investigates the performance of the optical network under different scenario with a minimum cost. In this study, based on the optisystem, the operations of the edfa and pdfa systems are modeled, respectively.
This lesson demonstrates the transient effects in an edfa caused by the. Raman amplifier archives tutorials of fiber optic products. This pc program works fine with 32bit versions of windows xpvista7810. This edfa module is ideal for todays highly dynamic networks and cost sensitive market. Matlab binary switch optical system software youtube. Pdf edfawdm optical network design and development using. Edfa is an optical amplifier that uses a doped optical fiber as a gain medium to amplify an optical signal. Edfa gain optimization for wdm system based on edfa pumping. Wdm optical network analysis using edfa and raman amplifier. Gain spectrum, gain saturation, and amplifier noise. These tasks range from optimization of the associated optical components to estimation of system link budgets and power penalties.
Graph comparison of gain versus wavelength nm using optisystem figure 2 shows that the effect of the increasing of pump power to the output power at different length of amplifier. Soaedfaraman optical amplifier for dwdm systems at the edge. Gain and noise figure analysis of erbium doped fiber. At least the loss limitation can be partially canceled out by the introduction of optical. The main goal of this paper is the optimization of raman amplifier to minimize its gain variation without using any gain flattening techniques. A typical setup of a simple erbiumdoped fiber amplifier edfa is shown in figure 1. Fiber driver optical amplifier modules provide multifunction, low noise, erbiumdoped fiber amplifier edfa solutions that are ideal for metro dense wavelength division multiplexing dwdm applications. In the shown case, the active fiber is pumped with light from two laser diodes bidirectional pumping, although unidirectional pumping in the forward or backward.
Wdmtdm or catv network design sonetsdh ring design transmitter, channel, amplifier, and receiver design dispersion map design estimation of ber and system penalties with different receiver models amplified system ber and link budget calculations as. It is also used in the optimization process for the raman amplifier pumps power level and wavelength. Optisystem serves a wide range of applications, from catvwdm network design and sonetsdh ring design to map design and transmitter, channel, amplifier, and receiver design. The edfa folder contains the erbium doped fiber model and other models to allow the simulation of edfas in the. Jun 03, 2016 this article aims to give a brief introduction to the most deployed fiber amplifier erbium doped fiber amplifier edfa. The user has access to optisystem s signal classes and an extensive library of convenience functions. Optisystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks.
The purpose of this paper is to correct the gain nonuniformity for each channel in order to equalize the amplitude gain in a wavelength division multiplexing wdm system. Jaff2, 1,2university of sulaimani college of science abstract. Optisystem s cpp component, similar in operation to the matlab component, allows users to create their own custom components. The edfa folder contains the erbiumdoped fiber model and other models to allow the simulation of edfas in the. It is also possible to amplify ultrashort pulses in the 1. Semiconductor optical amplifier soa and erbiumdoped fiber amplifier edfa are two of the main types of optical amplifiers, and they were used in this simulation model to analyze their performance, with a data rate of 622 mbs stm4 level and 170 km optical fiber length for each simulation model. The automatic gain control agc maintains the edfa gain at a fixed level during signal. In this video, i have covered erbium dopped fiber amplifier edfa with following outlines. Optisystem allows you to plan, test, and simulate optical links in the transmission layer of modern optical networks. Pdf design a reflective amplifier using optiwave simulation tool. Optisystems cpp component, similar in operation to the matlab component, allows users to create their own custom components.
Figure 2 shows an unoptimized amplifier output signal and noise spectrum when pump power and fiber length are 100 mw and 4 m. Noise figure is defined at the following conditions. Emcore 1550 nm catv optical amplificationedfa emcore. Fiber loss is a fundamental limitation in realizing long haul pointtopoint fiber optical communication links and optical networks. Edfa optical amplifier user manual threshold value for alarm chapter 9. Edfa wdm optical network analysis issn 22771956 v1n418941904 figure 2. Jun, 2011 optisystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks. This work demonstrates the simulation of two different types of optical fiber amplifiers ofa utilizing optisystem 10, namely, 3 m length of erbium doped fiber amplifier edfa and 7 km length of. Complex effects which occur during the gain and noise figure improvement operations of edfa are researched and simulated with an optical environment design software tool named optisystem. The properties and parameters of the m5 fiber are noted and the same is implemented in optisystem software. Isowc design model for nrz coding using optisystem software at channel wavelength of 1550 nm using edfa in both power booster and pre amplifier stage. Among them, the main amplifier technologies are doped fiber amplifier eg. Raman amplifier is an open area of research in telecommunication field.
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