These amplifiers are designed for amplification of up to 8 multiplexed dwdm optical channels. The optical fiber couplers allow bidirectional coupling and can be used to either split or combine signals. The claq edfa family includes preamplifier, booster edfa. Edfa erbium doped fiber amplifier is a kind of fiber optic amplifier which used to reamplify an attenuated signal without converting the signal into electrical form. He is a entrepreneur and working for cable industry. Erbiumdoped fiber amplifier edfa is an optical repeater device that is used to boost the intensity of optical signals being carried through a fiber optic communications system how it works.
Fiber amplifiers are developed to support dense wavelength division multiplexing dwdm and to expand to the other wavelength bands supported by fiber optics. The multicom 1550nm erbium doped fiber amplifier edfa is a low noise 1550nm optical amplifier, designed using advanced optical principles. Erbiumdoped fiber amplifier edfa is an optical repeater device that is used to boost the intensity of optical signals being carried through a fiber optic communications system. This series of amplifiers employ the optimized erdoped fiber optical path. Rare earth doped fiber amplifiers are of two types edfa erbium doped and pdfa praseodymium doped. Both of edfas pumped by 1480nm laser diodes and 980nm laser diodes are. Telecom fiber optic cables emea compensation modules. Network equipment hfc optical network transmission catv coaxial cable transmission digital tv equipment satellite series cmts fiber cable coaxial cable optical passive series rf connectors eoc test and accessories telecom series cctv series. This unit provides 24 dbm edfa constant output optical amplifier for 1550nm. 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.
In order to run the optimizations with the components shown in figure 1, the laser power is 40 dbm. Mafa 2000 series edfa datasheet february 20 fiber optics mafa 2000 series erbium doped fiber micro amplifier emcorea s mafa 2000 series erbium doped fiber amplifier edfa gain block module is an ideal building block for oem system integrators. It shows how to optimize the fiber length to maximize the amplifier gain. A wide variety of 10 edfa options are available to you, there are 732 suppliers who sells 10 edfa on, mainly located in asia. May 18, 2015 erbiumdoped fiber amplifier edfa is an optical repeater device that is utilized to boost the intensity of optical signals being carried through a fiber optic communications system.
Helmy department of electrical and computer engineering, university of toronto, 10 kings college road, toronto, on m5s 3g4, canada. The main types of amplifiers are edfaearth doped fiber amplifier,semiconductor optical amplifiers soa and raman amplifier. We provide all the information about ott headend, cloud headend, iptv headend, digital headend, streaming media industry, catv industry. Edfa stands for erbiumdoped fibre amplifiers, which is an optical amplifier that uses a doped optical fibre as a gain medium to amplify an optical signal. Network equipment hfc optical network transmission catv coaxial cable transmission digital tv equipment satellite series cmts. High power ytterbium erbium doped fiber amplifier introduction fot edfa 1550h is high power and low distortion edfa, which adopts jds, lumics and other worldrenowned semiconductor companies as the pumping source. High power ytterbium erbium doped fiber amplifier introduction fot edfa1550h is high power and low distortion edfa, which adopts jds, lumics and other worldrenowned semiconductor companies as the pumping source.
Boosting of an optical signal without any conversion of the. Edfa1550h high power ytterbium edfa fiber optic telecom. Useful for fiber transport over very long distances, or for feeding a fiber optic plc splitter for multi point signal distribution. The mars series cband preliminary erdoped fiber amplifiers of connet are the highgain, lownoise fiber amplifiers pre edfa. Erfa1 series are desktop type er doped optical fiber amplifiers edfas for experimental use. Erbium doped fiber amplifier edfa an amplifier is used to boost optical signals to higher power, often used both at launch and within a signal network to maintain a high signal power. Redundant power supply design stable output power and low noise figure high reliability and long lifetime lcd display and led alarm snmp supported. Pdf edfa transient suppression in optical burst switching. Specialty industrial indooroutdoor fiber optic cables. An edfa uses commercially available erbiumdoped fiber in a unique design that is optimized to amplify cwdm channels in the cand lbands of the spectrum. Osa compact edfa for cwdm multichannel applications. The em316ea family of cband edfa optical amplifiers is part of the fiber driver optical multiservice platform solution. A wide variety of 10 edfa options are available to you, there are 732 suppliers who. Modeling of gain in edfa and its behavior in c and l band.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. A steadygain cband edfa for multiwavelength fiber optical transport networks chinghung chang1, ami amrullah2 1department of electrical engineering, national chiayi university, chiayi city, 60004, taiwan, r. The project is given in edfa fiber length optimizationfig. When input optical power pin0dbm, the noise figure of unit is. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of note. Edfa amplifier archives tutorials of fiber optic products. It also supports all itu50 ghz and itu25 ghz dwdm grid channels. The f edfa booster amplifier offers low nf with a high saturated output power.
Edfa systems amplify optical channels without signal processing or retransmission, so there is virtually zero latency. Edfa has large gain bandwidth, which is typically tens of nanometres and thus actually it is enough to amplify data channels with the highest data rates. Winner of the standing ovation award for best powerpoint templates from presentations magazine. The claq is family of low noise, high performance and improved reliability edfa erbium doped fiber amplifier, designed to support turnkey amplification solutions for fiber networks. Pdf gain characteristic of erbium doped fiber amplifier. In the interior of the machine is equipped with the output optical power stability circuit and. The curves show that an edfa amplifies light over a bandwidth of approximately 30 to 40 nm.
Design and development of erbium doped fiber amplifiers. Hfc optical network transmission edfa products softel optic. Various models are lined up according to the output power level, gain and noise figure. 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 direction codirectional and counterdirectional pumping. This device is an optical amplifier for passive amplification of optical signals in the 1550nm channel band. All of optic hybrid gffisolator for edfa are stability and good quality maken by our factory. Ppt introduction to fibre optic communication powerpoint. At least the loss limitation can be partially canceled out by the introduction of optical. The hot pluggable, redundant power edfa is designed to amplify 1550nm optical signals to increase the optical transmission distance over fiber, and can be used in conjunction with the multicom 1550nm. Fiber amplifiers are developed to support dense wavelength division multiplexing dwdm and to expand to the other wavelength bands supported by fiber op. Optoamplifier basic function optical amplifier typessoa.
The gain of an erbium doped fiber amplifier was measured more than 30db over a signal wavelength. A typical setup of a simple erbiumdoped fiber amplifier edfa is shown in figure 1. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. The multicom 1550nm catv erbium doped fiber amplifier edfa is designed to amplify 1550nm optical signals to increase the optical transmission distance over fiber, and can be used in conjunction with the multicom 1550nm optical transmitter. Thor fedfa22 22 dbm edfa constant output optical amplifier. Optical amplifiers are used extensively in fiber optic data links. In this paper we derived the gain equation and its results in both conventional c band and long l band 15601600. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of edfa with minimal sensitivi.
The erbiumdoped fiber amplifier edfa has made tremendous progress since its invention in 1986. Rp photonics encyclopedia erbiumdoped fiber amplifiers. 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. A steadygain cband edfa for multiwavelength fiber optical. An erbium doped fiber amplifier edfa consists of a piece of fiber of length l, whose core is uniformly doped with erbium ions. Implementation of three functional devices using erbiumdoped fibers. Its core is the erbiumdoped optical fiber, which is typically a singlemode fiber. 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. Ha5400a has extremely low noise figure, the entire unit adopts twinstage amplification, and the preamplifier adopts low noise edfa, output cascade adopts high power eydfa. Hence if the signal occurs loss of about 20db if it travels a distance of 100km. Lowcost, widebandwidth, flatgain and lownoisefigure performance is achieved. The device uses a short length of optical fiber doped with the rareearth element erbium.
Optical amplifier is the device which increases the strength of the optical signal. Boosting of an optical signal without any conversion of. Flat gain nextgeneration variable gain function module. C 2department of computer science and information engineering, national chiayi university, chiayi city, 60004, taiwan, r. They are used to preamplify the small signal, improve the receiver sensitivity and extend the transmission distance of the signal. An optical fiber is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another frequency. Figure 1 shows three ways in which optical amplifiers can be used to enhance the. 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.
Optoamplifier basic function optical amplifier typessoa,edfa. Compare 1550nm edfa price super offer from aliexpress. The 1u frame can accept four edfa modules, two pairs of preamplifier and booster amplifier for example. Desktop type er doped optical fiber amplifier description. Setup and operation principle a typical setup of a simple erbiumdoped fiber amplifier edfa is shown. An edfa, also called optical amplifier or an erbiumdoped fiber amplifier or erbium amplifier, is an optical or ir infrared radiation repeater that amplifies a modulated laser beam directly, without optoelectronic and electrooptical conversion.
However, more often than not, these solutions come with a hefty price tag attached to them. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Graded index fiber has a lower modal dispersion than step index fiber plastic fiber is cheaper than glass fibers dispersion shifted fiber is used in dwdm systems if a signal can travel 1600 km at 10 gbps, due to pmd it can travel 400 km at 40 gbps fiber becomes multimode above its cutoff wavelength lasers are never used with multimode fibers. Ece1640h advanced labs instructions erbiumdoped fiber amplifier edfa 2 introduction the erbiumdoped fiber amplifier edfa has made tremendous progress since its invention in 1986. E rbium doped f iber a mplifier an edfa is an optical repeater device that is used to boost the level of optical signals being carried through a fiber optic rfog or overlay system. Wdm wavelength division multiplexer and edfa tap coupler. The gain for an erbiumdoped fiber amplifier is shown in figure 7. 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. Newports wide range of fiber optic couplers and wdms for wavelength division multiplexing have been developed using fused fiber technology. The amplifier is based on erbium doped fiber, and can be incorporated directly into an optical network, avoiding the need to convert optical signals to electrical signals for amplification and relaunch. Erfa1 series can be operated with commercial ac power.
Common fiber optical amplifiers include erbiumdoped fiber amplifier or edfa optical amplifier, raman fiber amplifier, and silicon optical amplifier soa. An optical fiber is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another. Ideal fibre optic solution for lmos the edfa provides the ideal, cost effective solution for the last mile operator new technologies often provide unique and even sometimes elegant solutions. The optical amplifier has replaced the rather involved process of the fiber optic repeater station. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Such ions can be thought of as simple twolevel systems, i. In this example we show optimization of a single parameter by using spo. The family of mafa 2000 edfa gain blocks is, networks video and data transport networks. The optical signal is injected into this fiber, along with the light from a special pump laser that is designed to excite the erbium ions. Implementation of three functional devices using erbium. Hybrid for edfa fiberer fiber optics,data center expert. Your reliable onestop fiber network equipment and service provider. The development of erbiumdoped fiber amplifiers edfa in the latter half of the 1990s supported amplification of signals using wavelengthdivision multiplexing wdm and permitted the spread of longdistance, large.
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