Optical amplifier is the device which increases the strength of the optical signal. 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. Edfa amplifier archives tutorials of fiber optic products. The f edfa booster amplifier offers low nf with a high saturated output power. Winner of the standing ovation award for best powerpoint templates from presentations magazine. 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. Modeling of gain in edfa and its behavior in c and l band. Thor fedfa22 22 dbm edfa constant output optical amplifier. Various models are lined up according to the output power level, gain and noise figure. Setup and operation principle a typical setup of a simple erbiumdoped fiber amplifier edfa is shown. Boosting of an optical signal without any conversion of the. Ece1640h advanced labs instructions erbiumdoped fiber amplifier edfa 2 introduction the erbiumdoped fiber amplifier edfa has made tremendous progress since its invention in 1986. However, more often than not, these solutions come with a hefty price tag attached to them.
The erbiumdoped fiber amplifier edfa has made tremendous progress since its invention in 1986. Lowcost, widebandwidth, flatgain and lownoisefigure performance is achieved. 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. Pdf edfa transient suppression in optical burst switching. Useful for fiber transport over very long distances, or for feeding a fiber optic plc splitter for multi point signal distribution. Implementation of three functional devices using erbium. Gain characteristic of erbium doped fiber amplifier article pdf available in proceedings of spie the international society for optical engineering 7157 december 2008 with 1,379 reads. Pdf gain characteristic of erbium doped fiber amplifier. 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. The claq edfa family includes preamplifier, booster edfa. Your reliable onestop fiber network equipment and service provider.
Optoamplifier basic function optical amplifier typessoa,edfa. In this example we show optimization of a single parameter by using spo. C 2department of computer science and information engineering, national chiayi university, chiayi city, 60004, taiwan, r. Figure 1 shows three ways in which optical amplifiers can be used to enhance the. We provide all the information about ott headend, cloud headend, iptv headend, digital headend, streaming media industry, catv industry. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Boosting of an optical signal without any conversion of. This device is an optical amplifier for passive amplification of optical signals in the 1550nm channel band. The project is given in edfa fiber length optimizationfig. This series of amplifiers employ the optimized erdoped fiber optical path.
The gain of an erbium doped fiber amplifier was measured more than 30db over a signal wavelength. 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. The gain for an erbiumdoped fiber amplifier is shown in figure 7. Its core is the erbiumdoped optical fiber, which is typically a singlemode fiber. Implementation of three functional devices using erbiumdoped fibers. 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. Newports wide range of fiber optic couplers and wdms for wavelength division multiplexing have been developed using fused fiber technology. Network equipment hfc optical network transmission catv coaxial cable transmission digital tv equipment satellite series cmts. Optoamplifier basic function optical amplifier typessoa.
Design and development of erbium doped fiber amplifiers. Specialty industrial indooroutdoor fiber optic cables. 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. When input optical power pin0dbm, the noise figure of unit is. Optical amplifiers are used extensively in fiber optic data links. Rp photonics encyclopedia erbiumdoped fiber amplifiers. A typical setup of a simple erbiumdoped fiber amplifier edfa is shown in figure 1. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of note. The optical amplifier has replaced the rather involved process of the fiber optic repeater station. 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. It shows how to optimize the fiber length to maximize the amplifier gain.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. 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. 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 how it works. Telecom fiber optic cables emea compensation modules. The family of mafa 2000 edfa gain blocks is, networks video and data transport networks. Hfc optical network transmission edfa products softel optic. Hybrid for edfa fiberer fiber optics,data center expert. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. A wide variety of 10 edfa options are available to you, there are 732 suppliers who sells 10 edfa on, mainly located in asia.
Common fiber optical amplifiers include erbiumdoped fiber amplifier or edfa optical amplifier, raman fiber amplifier, and silicon optical amplifier soa. Osa compact edfa for cwdm multichannel applications. The optical fiber couplers allow bidirectional coupling and can be used to either split or combine signals. In order to run the optimizations with the components shown in figure 1, the laser power is 40 dbm. All of optic hybrid gffisolator for edfa are stability and good quality maken by our factory. 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. 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. A wide variety of 10 edfa options are available to you, there are 732 suppliers who. In the interior of the machine is equipped with the output optical power stability circuit and. They are used to preamplify the small signal, improve the receiver sensitivity and extend the transmission distance of the signal. 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. 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.
Edfa systems amplify optical channels without signal processing or retransmission, so there is virtually zero latency. The em316ea family of cband edfa optical amplifiers is part of the fiber driver optical multiservice platform solution. Both of edfas pumped by 1480nm laser diodes and 980nm laser diodes are. Ppt introduction to fibre optic communication powerpoint. 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. 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. Edfa1550h high power ytterbium edfa fiber optic telecom. Compare 1550nm edfa price super offer from aliexpress. 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. 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. 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. 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.
Helmy department of electrical and computer engineering, university of toronto, 10 kings college road, toronto, on m5s 3g4, canada. Desktop type er doped optical fiber amplifier description. 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. The curves show that an edfa amplifies light over a bandwidth of approximately 30 to 40 nm. 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. The device uses a short length of optical fiber doped with the rareearth element erbium. 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. Erfa1 series can be operated with commercial ac power. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of edfa with minimal sensitivi.
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. At least the loss limitation can be partially canceled out by the introduction of optical. These amplifiers are designed for amplification of up to 8 multiplexed dwdm optical channels. Redundant power supply design stable output power and low noise figure high reliability and long lifetime lcd display and led alarm snmp supported. 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. This unit provides 24 dbm edfa constant output optical amplifier for 1550nm.
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. Fiber amplifiers are developed to support dense wavelength division multiplexing dwdm and to expand to the other wavelength bands supported by fiber op. Fiber amplifiers are developed to support dense wavelength division multiplexing dwdm and to expand to the other wavelength bands supported by fiber optics. 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. 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. The main types of amplifiers are edfaearth doped fiber amplifier,semiconductor optical amplifiers soa and raman amplifier. 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. 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. 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. Erfa1 series are desktop type er doped optical fiber amplifiers edfas for experimental use. 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. It also supports all itu50 ghz and itu25 ghz dwdm grid channels. The 1u frame can accept four edfa modules, two pairs of preamplifier and booster amplifier for example.
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