Click download or read online button to get optical amplifiers book now. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. At least the loss limitation can be partially canceled out by the introduction of optical. Finisars single channel micro edfa is a costeffective micro processorcontrolled module for amplifying single channels in the cband. The fg edfa can be softwareconfigured as a preamplifier, booster or inline amplifier, thus allowing a single partnumber to address different network functions. Edfa is the most often used optical amplifier due to low loss optical window of silica based fiber. Introduction to optical amplifiers 917 cannot exceed the pump power. The working principle and gain characteristics of edfa are introduced briefly, the. Measurement of edfa gain using an optical spectrum analyzer osa, can be performed simply by comparing the edfa optical input and output levels. Gain and noise figure analysis of erbium doped fiber amplifier by four stage enhancement and analysis. The primary difference is that they do not have a resonator. Edfa wavelength division multiplexing optical fiber.
Gain flattening is a process by which an uneven gain profile is adjusted by counteracting the gain spectrum of an erbiumdoped fiber amplifier. Fundamental design of a distributed erbiumdoped fiber amplifier for. Edfa gain block module is an ideal building block for oem systems integration where there is a requirement to amplify a 1550 nm signal for a broad range of applications including catv systems, rfmicrowave fiber optic links, sensing and control systems, and more. As the power in the input signal is increased, there must be a power at which the amplifier gain decreases. In steady state, dn2 dt 0, the ratio of level 1 and level 2 population to the total population can be written as. Mitigation of transient response of erbiumdoped fiber amplifier for burst traffic of high speed optical packets. Com offers dwdm edfa with agc operation mode which ensures constant gain and enables the saturated output power to change with the input power. Investigation of broadband sband to lband erbiumdoped fiber.
Home forums fiber edfaraman hybrid amplifier gain edfaraman hybrid amplifier gain dennis jacq joined may 2016 participant hi guys, i am currently simulating edfaraman amplifier in terms of output gain base on the journal gain flattening of edfa using hybrid edfaraman amplifier with reduced channel spacing. Gain and noise figure performance of erbiumdoped fiber amplifiers. Along with a portable design, ap3370 edfa modules provide stable saturated output power up to 22 dbm and noise. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect.
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. Edfa stands for erbium doped fiber amplifier and it is one type of many different optical amplifiers. The em316ea family of cband edfa optical amplifiers is part of the fiber driver optical multiservice platform solution. 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. It is the range of optical wavelengths for which the amplifier yields a usable gain.
These products are available in a wide variety of gain configurations targeting. After knowing the basic information of edfa and raman optical amplifiers, you must consider that the raman amplifier performs better for two main reasons. Experimental demonstration of a low cost electronic. An erbium doped fiber amplifier is a suitable component for optical fiber networks serving as a wide range of. Edfas use a pump laser 980 nm or 1480 nm to bring up electrons to a higher energy level. Its features are put to use in this reference design for laser and thermoelectric cooler control in edfa and raman optical amplifiers. Edfa single pass gain calculator file exchange matlab. The development of erbiumdoped fiber amplifier edfa has revolutionized to optical fiber communications systems. Using new 19dbm output 16ports edfa instead old 17dbm 4ports2 edfa and 2 optical transmitter in cable tv network. The optical input power controls the edfa saturation state and. Gain saturation is exhibited in the curves shown in figure 9. Edfa also have large gain bandwidth, which is normally tens of. Measurement of nf requires accurate measurement of the edfa. Pdf gain characteristic of erbium doped fiber amplifier.
Firstly, it has a wide band, while the band of edfa is only from 1525 nm to 1565 nm and 1570 nm to 1610 nm. An optical amplifier pump laser reference design based on the amc7820 rick downs data acquisition products abstract the amc7820 is an integrated circuit designed for analog monitoring and control. What must the gain of the amplifier be to ensure that the. I have run the file, but only results for mode 1 was appearing. An optical amplifier is a device that amplifies an optical signal directly, without the need to first convert it to an electrical signal. Edfa education kit manual page 2 of 26 generated by stimulated emission. Erbiumdoped fiber amplifier edfa is an optical amplifier used in the cband and lband, where the loss of telecom optical fibers becomes lowest in the. Analytical solution to calculate the smallsignal singlepass gain of a fiber amplifier. The gain flatness of erbiumdoped fiber amplifier edfa is a key device for wavelength division multiplexing wdm application in modern optical network systems. The gain flattening of erbium doped fiber amplifier edfa is essential for their application in wavelength division multiplexing wdm system. These products are available in a wide variety of gain configurations targeting different output powers. Application note optical amplifier edfa characteristics evaluation.
High gain erbiumdoped fiber amplifier for the investigation of. Gain tilt db is the nonflatness of the gain of an edfa. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Optical amplifiers download ebook pdf, epub, tuebl, mobi. The audio amplifier runs off a 5v supply and is driven by an audio codec that has a maximum peaktopeak output voltage of 3 v. This site is like a library, use search box in the widget to get ebook that you want. Home forums fiber edfaraman hybrid amplifier gain edfaraman hybrid amplifier gain dennis jacq joined may 2016 participant hi guys, i am currently simulating edfa raman amplifier in terms of output gain base on the journal gain flattening of edfa using hybrid edfa raman amplifier with reduced channel spacing. A typical setup of a simple erbiumdoped fiber amplifier edfa is shown in figure 1. An engineers design requires that 2 w of rms output power be driven into his 4. In this paper, a simulation of an edfa has been studied to characterize gain, noise figure of a forward pumped edfa operating in c band 15251565 nm as. A metastable energy level at 4i2, with a long decay time 10 ms, is essential for collecting ions for a population inversion.
Post a pdf data sheet to our openindex product research engine. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. 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. A gainflattened version and a preamplifier version for a lower input power 30 dbm, are also available. The application of edfa is very constructive to deal with the problems of low sensitivity of receivers and short transmission distances owing to.
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. They enable the characterization of the gain, noise figure, and output power under unsaturated and saturated signal input regime. Gain spectrum, gain saturation, and amplifier noise. The ap3370 edfa module could be combined with ap3314 power meter modules in the platform. An optical amplifier is a device that amplifies an optical signal directly, without the need to first the most common example is the erbium doped fiber amplifier edfa, where the core of a silica the amplification window of an optical amplifier is the range of optical wavelengths for which the amplifier yields a usable gain. Gain tilt contributes to the cumulative degradation of an optical signal as it passes through multiple amplification stages.
Gain and noise figure performance of erbium doped fiber amplifiers edfa a. Careful attention to component selection and circuit board design allow these 1550nm range edfas to product high gain at a low noise level. Pdf edfa gain flattening using cascaded fiber bragg gratings. Common fiber optical amplifiers include erbiumdoped fiber amplifier or edfa optical amplifier, raman fiber amplifier, and silicon optical amplifier soa.
Edfa amplifier archives tutorials of fiber optic products. Pdf erbiumdoped fiber amplifier edfa is an optical amplifier used in the c band and lband, where the loss of telecom optical fibers. The emcore mafa 5000 series micro erbium doped fiber amplifier. Its core is the erbiumdoped optical fiber, which is typically a singlemode fiber. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of erbium doped fiber amplifier, benchtop edfa instruments with adjustable power up to 10 watts. Edfa erbiumdoped fiber amplifier installation work cable. Gain and noise figure analysis of erbium doped fiber.
Edfa gain and signal output power are usually measured as a function of wavelength and input signal. The purpose of this paper is to correct the gain nonuniformity for each channel in. Pdf in the design of erbium doped fiber amplifier edfa, improving flatgain has great important significance. If signal amplification is achieved by emitted photons of the same signal wavelength with the help of stimulated emission. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Consequently, the tunable laser is the most important test equipment in optical amplifier edfa testing, in particular because these amplifiers are the key elements in wdm systems. In the first section, an sband gainclamped erbiumdoped fiber amplifier edfa module, employing a fiber bragg grating fbg to act as a reflected element for. Customized preamplifier edfa for dwdm solution buy and customize fiber optical products from fs. The fg edfa can be softwareconfigured as a pre amplifier, booster or inline amplifier, thus allowing a single partnumber to address different network functions. An optical amplifier pump laser reference design based on.
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