Introduction to optical amplifiers 4 fiber raman amplifier. The ytterbiumdoped fiber amplifier offers a number of attractive features, including a broadgain bandwidth and a high efficiency, due in large part to its freedom from various competing. A novel flattened gain cband cascaded hybrid optical. The signal to be amplified and a pump laser are multiplexed into the doped fiber, and the signal is amplified through interaction with the doping ions. Gain, noise figure and forward ase spectrum of a forwardpumped erbiumdoped fiber amplifier. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. For example, try out how mode properties react to changes of the index profile. No crossgain modulation, pattern dependence, or modulation format.
Thorlabs praseodymiumdoped fiber amplifier pdfa offers high gain 20 db small. The 9000edfa series are high quality, erbium doped fiber amplifiers used to extend signals in longhaul optical communications applications. The burst energy can be scaled up to 1 mj, comprising 25. Osa highgain erbiumdoped travelingwave fiber amplifier. Singlemode ytterbiumdoped largemodearea photonic bandgap rod fiber amplifier. In the latter case, wallplug efficiencies, excluding cooling of the pump diode lasers, in excess of 15% were also achieved. The external light is launched with a characterization of a highpower erbium doped fiber laser francois sanchez 1, foued amrani, alioune niang, mohamed salhi1, andrey komarov1,2. Pdf a new erbiumdoped fibre amplifier edfa is demonstrated using a combination of newly developed erbium zirconia codoped fiber zredf and the. Thorlabs optical amplifiers are available as complete benchtop systems or as pigtailed butterfly packages. Ultralarge core birefringent yb doped tapered double clad fiber for high power amplifiers andrey fedotov, 1, teppo noronen,2 regina gumenyuk,1 vasiliy ustimchik,3,4 yuri chamorovskii,4 konstantin golant,4 maxim odnoblyudov,5 joona rissanen,1 tapio niemi,1 and valery filippov 5 1tampere university of technology, korkeakoulunkatu 3, 33101 tampere, finland 2ampliconyx ltd, lautakatonkatu 18. It can be tailored to meet specific requirements in terms of power, temporal regime and other functionalities. Commons is a freely licensed media file repository. Optimize fiber designs to obtain the needed modal properties. Rp photonics encyclopedia tutorial fiber amplifiers.
Hybrid ytterbiumdoped largemodearea photonic crystal fiber amplifier for long wavelengths sidsel r. It comprises the flexibility of smooth pulse duration control from single ns to 260 ns with independently tunable repetition rate. It is used in the telecommunications field and in various types of research fields. Introduction erbiumdoped fiber amplifiers are the by far most important fiber amplifiers in the context of. The term doping refers to the process of using chemical elements to facilitate results. Hybrid ytterbiumdoped largemodearea photonic crystal. Perhaps the most important version is erbium doped fiber amplifiers edfas due to their ability to amplify signals at the low loss 1.
Nddoped fiber lasers and fiber amplifiers at 9xx nm by. Micromachining with squareshaped 1 nslong pulses from an. These high power edfa instruments are 1550nm range cband erbium 1w doped and erbiumytterbium 10w doped fiber amplifiers which offer up to 10 watts of output power. Available in boost, inline, and preamp configurations, the different models cover various transmission scenarios at points all along the optical communications path. An erbiumdoped fiber amplifier edfa is a device that amplifies an optical fiber signal. Pdf erbiumdoped fiber amplifier edfa is an optical amplifier used in the c band and lband, where the loss of telecom optical fibers.
Thorlabs also offers a benchtop erbiumdoped fiber link amplifier developed by our strategic partner. These techniques were implemented in an alignmentfree, doublepass, ybdoped fiber amplifier with a 26 db gain at a wavelength 23 nm off the gain peak and a. Fundamental design of a distributed erbiumdoped fiber amplifier for. This fiber amplifier has operated for 2 months without any degradation or observed optical damage. Na afloop van deze plechtigheid zal er een receptie plaatsvinden waarvoor u ook van harte wordt uitgenodigd. A limit in signaltonoise ratio that is due to concurrent amplification of spontaneous emission is observed. Towards more efficient praseodymium doped fibre amplifiers for the oband op dinsdag 7 november 2006 om 16. Doped fiber amplifier and fiber laser file exchange. Ytterbium doped fiber amplifier article pdf available in ieee journal of quantum electronics 337. A small signal input power is considered in this case, where results with high gain and small noise figure values are desirable. Doped fiber amplifiers dfas are optical amplifiers that use a doped optical fiber as a gain medium to amplify an optical signal. Pdf analysis and design of a dyedoped polymer optical. Our line of benchtop optical amplifiers includes ytterbiumdoped fiber amplifiers ydfas, a praseodymiumdoped fluoride fiber amplifier pdfa, and erbiumdoped fiber amplifiers edfas. J pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel feedback mechanism shaping the seed of the burstmode amplifier.
Opti 500 c, spring 2011, lecture 23, introduction to optical amplifiers 2 erbiumdoped fiber amplifiers. The simulation of the nd doped fiber amplifiers have been done. Effect of local coordination on the photoluminescence. As an example, we consider an erbiumdoped fiber amplifier, as it could be used in optical fiber communications, e. Pdf flatgain wideband erbium doped fiber amplifier by. The passage of the 1996 telecommunications act and the growth of the internet have sparked intense demand for expanded bandwidth in all network layers, resulting in significant advances in erbiumdoped fiber amplifier edfa technology. In this paper, all parameters affecting the gain of the rbdpofa are recognized. Rp fiber power is a musthave if you work with fiber devices and an excellent educational tool for fiber optics. Erbium doped fiber amplifier medfa c1 an amplifier design optimized for use in the systemslab or for optical test for map series the multiple application platform map erbium doped fiber amplifier medfa c1 is a thirdgeneration amplifier design, optimized for use in the systemslab or for optical test and measurement applications. Models that take some or all of the abovementioned aspects. On the other hand, the fiber problem with re clusters is not considered as a problem for redoped integrated components with an ample amount of phosphor or aluminum in the core. Introduction ytterbium ybdoped fiber lasers and amplifiers have become an attractive option for generating light in the 1. They are simple to operate, affordable benchtop instruments. A rhodaminebdoped polymer optical fiber amplifier rbdpofa has been successfully fabricated and tested.
Xfprf transmitter host system for catv hybrid fiber. Eken4 1department of physics, bilkent university, 06800 ankara, turkey 2institute of materials science and nanotechnology, bilkent university, 06800 ankara, turkey. Photodarkening measurements in largemodearea fibers. Effect of local coordination on the photoluminescence properties of erdoped y 20 3 thin films miniaturizing the erbiumdoped optical fiber amplifier 20 m in length into a small, compact amplifier that can be integrated with other optical and electronic devices on a single chip. Burstmode ybdoped fiber amplifier system optimized for. White paper introduction to edfa technology optical.
Erybdoped fiber amplifier employing free space coupling pumpsignal combiner module, in european conference on optical communication, london 22 26 sep. We report on the burstmode operation of a polarizationmaintaining yb doped multistage all fiber amplifier capable of generating 10pulse 100 ns long bursts of 400. Osa highgain, polarizationpreserving, ybdoped fiber. At least the loss limitation can be partially canceled out by the introduction of optical. Highly efficient cascaded amplification using pr doped mid. A fiber laser or fibre laser is a laser in which the active gain medium is an optical fiber doped with rareearth elements such as erbium, ytterbium. The first implementation of active fiber optic amplifier was demonstrated in 1994 with erbiumdoped fiber amplifier edfa. Corepumped and claddingpumped nd doped fiber amplifiers are also investigated. We report a highefficiency, singlemode, allfiber pulsed laser system built in a master oscillator power amplifier format, operating in the eyesafe.
Ultralarge core birefringent ybdoped tapered double clad. Demand on higher bandwidth bring about to use the other rare earth doped fiber such as thuliumdoped fiber amplifiers tdfas. The obtained results show that it is possible to construct optical amplifiers and fiber lasers in the 0. Therefore a population inversion and optical gain can be achieved in the er doped. Prucnal lightwave communications laboratory, department of electrical engineering, princeton university, princeton. Bolen, erbiumdoped phosphosilicate fiber amplifiers. Optical steganography based on amplified spontaneous emission noise ben wu, zhenxing wang, yue tian, mable p. Longdistance hybrid fiber coaxial hfc optical links overview finisars xfpoa optical amplifier is an erbiumdoped fiber amplifier edfa in a small form factor hotpluggable optical module. We demonstrate burstmode operation of a polarizationmaintaining ybdoped fiber amplifier capableof generating 60. The optimum fiber length for maximum gain is determined experimentally. It amplifies optical signals to enable long hybrid fiber coaxial links andor high optical splitting for rfoverglass architectures. Rare earth doped fiber amplifiers are finding increasing importance in optical communications systems.
Pyfiberamp comes with spectroscopic data effective absorption and emission cross sections for ybdoped germanosilicate fibers and supports importing spectra for other dopants and glass compositions. The most common example is the erbium doped fiber amplifier edfa, where the. Statement by author the thesis titled nddoped fiber lasers and fiber amplifiers at 9xx nm prepared by jiawei song has been submitted in partial fulfillment of requirements for a masters degree at the university of arizona and is deposited in the university library to be made available to. Ultralarge core birefringent ybdoped tapered double clad fiber for high power amplifiers andrey fedotov, 1, teppo noronen,2 regina gumenyuk,1 vasiliy ustimchik,3,4 yuri chamorovskii,4 konstantin golant,4 maxim odnoblyudov,5 joona rissanen,1 tapio niemi,1 and valery filippov 5 1tampere university of technology, korkeakoulunkatu 3, 33101 tampere, finland. Optical amplifiers, edfa, erbium doped fiber, gain, noise figure 1. Information from its description page there is shown below. Doped optical fiber amplifiers pt2 archives optiwave. Alkeskjold,2 federica poli,3 enrico coscelli,3 mette m. Opti 500 c, spring 2011, lecture 23, introduction to optical amplifiers 5 typical edfa characteristics. Optical steganography based on amplified spontaneous. Shortly after their commercialization in the early 1990s, erbium doped fiber amplifiers edfas became a key enabling technology for optical communication. Erbiumdoped fiber amplifiers are an important technology for lightwave voice, video, and data transmission. Erbium doped fiber amplifiers are the by far most important fiber amplifiers in the context of longrange optical fiber communications.
The maximum achievable optical output power of the fiber amplifier is limited by the available pump power, typical erdoped fiber amplifiers permit. Micromachining with squareshaped 1 nslong pulses from an allfiber ybdoped laseramplifier system k. Characterization of a highpower erbiumdoped fiber laser. Our amplifiers rely on ybdoped microstructured fiber architectures. 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. Eindhoven university of technology master an optical amplifier. We report on the burstmode operation of a polarizationmaintaining ybdoped multistage allfiber amplifier capable of generating 10pulse 100 ns long bursts of 400.
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