An optical fiber amplifier is a fiber optic device used to amplify optical signals directly without conversion into electrical signals. In this work we present a novel design of an optical amplifier with high gain elaborated. See our free tutorial passive fiber optics, for which the software has been used extensively, and also the tutorial modeling of fiber amplifiers and lasers, which explains concepts and methods. Several examples of doublepass fiber amplifiers including a polarization maintaining pm gainfiber are disclosed. Doped fiber amplifiers, on the other hand, suffer relatively less from drs and nonlinear degradations, and hybrid amplifier consisting of thuliumdoped fiber amplifier tdfa and erbiumdoped fiber amplifier edfa has been proposed by sakamoto et al. The ready availability of a flexible, userfriendly design tool should be of considerable practical interest to scientists and engineers working. When there are 8 or more e3xna amplifiers mounted sidebyside, the response time will be 350. It is used in the telecommunications field and in various types of research fields. In each example, input and twiceamplified output are separated by an allfiber, polarizationmaintaining polarization splitter combiner. Thus we can use erbiumdoped fiber and pump laser to construct an optical amplifier, which called erbiumdoped fiber amplifier edfa. Springer series in optical sciences the springer series in optical sciences, under the leadership of editorinchief william t.
Erbiumdoped fiber amplifiers are the by far most important fiber amplifiers in the context of longrange optical fiber communications. Enhanced pulseshaping capabilities and reduction of non. Dualwavelength, passively qswitched thuliumdoped fiber laser with ndoped graphene saturable absorber. Keep in mind that modeling always starts with thinking. In the next case, the ytterbiumdoped fiber is doubleclad. Numerical modeling of the impact of pump wavelength on yb. Optical fiber communications keiser 4th edition pdf. This fiber amplifier has operated for 2 months without any degradation or observed optical damage. Rhodes, georgia institute of technology, usa, provides an expanding selection of research monographs in all.
Gain saturation in optical fiber laser amplifiers intechopen. Osa optimisation of cascaded yb fiber amplifier chains. Mutual interference prevention is effective when e3xsdnaseries fiber amplifier units are gangmounted without other e3x series fiber amplifier units. This book covers the fundamental aspects of fiber lasers and fiber amplifiers, and includes a wide range of material from laser physics fundamentals to stateoftheart topics in this rapidly growing field of quantum electronics. This book covers the fundamental aspects of fiber lasers and fiber amplifiers, and.
We show that it is possible to adapt existing software packages developed originally for modeling telecommunication devices and systems to reliably predict and optimize the performance of highpower ytterbiumdoped fiber amplifier and laser systems. For example, praseodymiumdoped fluoride fiber amplifiers pdffas and fras have been successfully used for 0. Rugged ip67 amplifier with output timing logic can be paired with glass or plastic fiber optics. Amplifiers are used to increase the amplitude of a voltage or current, or to increase the amount of power available usually from an ac signal. Generally, a model is a mental construction which is supposed to resemble some part of reality for example, the power conversion from pump light to signal light in a fiber amplifier or the propagation of ultrashort pulses in an optical fiber. Doped optical fiber amplifiers pt3 archives optiwave. Optical fiber amplifiers, optical fiber lasers, brillouin scattering. Pdf analysis and design of a dyedoped polymer optical. Implementation of three functional devices using erbium. Simple fiber amplifier e3xsdna the highest level of power and precision in the industry with giga ray giga power lighting element stable detection of minute objects even when the sensor is covered with dust and oil in severe environments. Existing generalpurpose fiber units can be connected. 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 entire optical telecommunication.
High color discrimination capability with the same easy operation as previous fiber amplifier units. Analysis and design of a dyedoped polymer optical fiber amplifier article pdf available in applied physics b 783. Valerii vartan termikirtychev fundamentals of fiber. A practical perspective by rajiv ramaswami, kumar sivarajan, galen sasaki the new edition of optical networks continues to be the authoritative source for information on optical networking technologies and techniques. Review of erbiumdoped fiber amplifier 23 september 2011. Erbiumdoped fiber amplifiers has been written by early pioneers in the development of fiber amplifier technology and optically amplified systems. Fundamentals of fiber lasers and fiber amplifiers vartan ter. Progress on high power single frequency fiber amplifiers.
The most common example is the erbium doped fiber amplifier edfa, where the. The 59552a fiberoptic distribution amplifier and the 59553a fiberoptic receiver provide a simple, modular approach to signal routing. Modelling consideration of praseodymiumdoped fiber. Users may download and print one copy of any publication from the public portal for the purpose. Fiber parameters and their values used in calculations are summarized in table 1. Super manual fiber amplifier e3xna adjuster type standard that is the culmination of true ease and simplicity features selfexplanatory led bar displays of light levels the previous manual type used the stability and incident level indicators to display the light level change, which was. The system used to simulate the doubleclad fiber amplifier counterpumped is shown in figure 5. Immediately determine operation and amount of light with a simple, bright display. An erbiumdoped fiber amplifier edfa is a device that amplifies an optical fiber signal. In one example, light is first passed through a gain fiber in a first polarization direction and then is passed through the gain fiber in a. Semiconductor optical amplifier, 633nm 1180nm, up to 3000mw, single mode, excellent beam profile, low seed power 5mw 50mw, fiber seeded version. Paired with glass or plastic fibers to measure in harsh environments. Fiber units throughbeam indicates models that allow free cutting.
We present a highpower ytterbium fiber amplifier based on active tapered doubleclad fiber tdcf and capable of high singlepass gain. We demonstrate an all fiber tunable tmhocodoped laser operating in the 2. An optical amplifier is a device that amplifies an optical signal directly, without the need to first. Simple fiber amplifier e3xsd the standard for fiber amplifiers with simple operation and high performance operation so simple that essentially anyone can use the amplifier right way. Performance impacts due to excitation of undesired pump modes, mode coupling and macrobending loss within the erbiumdoped. This book on optical fiber communication written by dr. Diminution of ase noise in erbium doped fiber amplifiers. Rare earth doped fiber amplifiers erbium edfa 1500 nm, praseodymium. Dfpap1a fiber amplifier, rectangular, 1channel, pnp, selectable lightondarkon, 1030 vdc operating voltage, pigtail. The wavelength tuning range of the tmhocodoped fiber laser thfl with 1m length of tmhocodoped fiber thdf was from 1727 nm to 2030 nm.
Optical fiber transmission has revolutionized networking and communication systems. Amplifier units item appearance connecti e ppea a ce co ec output model tions ou pu npn output pnp output standard models prewired type onoff output e3xda11 e3xda41 monitoroutput models onoff output monitor output e3xda21 e3xda51 fiber units throughbeam indicates models that allow free cutting. Manual fiber amplifier e3xna simple and easytouse amplifiers with a sensitivity adjuster provided as a standard feature intuitive led bar display shows light levels at a glance. Fiber amplifier, ase, and laser simulator, professional version 3. The development of erbiumdoped fiber amplifier edfa. 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. Connet laser offers a widerange variety of fiber amplifiers in the 1. Modeling of fiber amplifiers and lasers rp photonics. The spontaneous emission also could be amplified by pump laser. The system demonstrates a fiber laser, based on passive mode locking using a saturable absorber, capable of producing ultrashort pulses sample. Hybrid doped fiber amplifier with 100nm bandwidth for. Reduced wiring and space requirements for power lines.
The term doping refers to the process of using chemical elements to facilitate results. Users may download and print one copy of any publication from the public. However, the amplifier has noise figure over 10 db in the 15401560 nm region due to the. The efficiency of an ytterbiumdoped fiber amplifier depends mainly on the absorption of pump radiation, and, therefore, optimum pump wavelengths have been proposed such as 915 nm. Ul991 ul certification including ul 991 testing and evaluation applicable standards. The tdcf power amplifier seeded with a 320 mw narrowband. Power scaling of singlefrequency ytterbiumdoped fiber.
Componentry and transmission are discussed in detail with emphasis on practical networking issues that affect organizations as they evaluate. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co. Rp fiber power simulation and design software for fiber. Perhaps the most important version is erbium doped fiber amplifiers edfas due to their ability to amplify signals at the low loss 1. Optical noise of an amplifier is inherently due to a random spontaneous emission amplified in a fiber medium. Fundamental design of a distributed erbiumdoped fiber amplifier for. Pdf tapered fiber amplifier with high gain and output power. This version of internet explorer is either no longer supported by microsoft, or is obsolete and some features of our store may no longer be supported. Fiber amplifier 1 in this experiment you will characterize a semiconductor laser operating at 980 nm, the performance of a wdm coupler at the wavelength of 980 nm, and the absorption properties of an erbiumdoped optical fiber also at the wavelength of 980 nm. Erybdoped fiber amplifier employing freespace coupling pumpsignal. Rare earth doped fiber amplifiers are finding increasing importance in optical communications systems. Efficient short wavelength operation and ultrawide wavelength tuning range of 303 nm were both achieved. Doped fiber amplifiers dfas are optical amplifiers that use a doped optical fiber as a gain medium to amplify an optical signal. Author of hps fiber optics handbook, he has been active in the development of fiber optics instrumentation technology, measurement standardization and applications since l982.
In the latter case, wallplug efficiencies, excluding cooling of the pump diode lasers, in excess of 15% were also achieved. Multiple communication devices, like optical transmitters and receivers, are used in optical fiber. Osa multimode fiber amplifier with tunable modal gain. To set the ytterbiumdoped fiber component to work as doubleclad, the parameter doubleclad fiber enhanced tab has to be set to true and the value of the pump reference has to be specified. Single frequency pm amplifier platform 215w sbs threshold at 1064nm in 6. Whatever the task, there are three categories of amplifier that relate to the properties of their output. We propose a method for controlling modal gain in a multimode erbiumdoped fiber amplifier mmedfa by tuning the mode content of a multimode pump. Models without this mark do not allow free cutting superlongdistance mode. When the pulse is turned off, damped oscillations are observed too with the same. Light source wavelength red led 660 nm required fiber optic cables all e32 series control output onoff output npn open collector load current. Color fiber amplifier unit e3nxca smart fiber amplifier units with white leds.
Ul 31211 additional application testing and evaluations standards. One is the 1550 nm, erbiumdoped fiber amplifiers edfas working wavelength, which has minimum losses. Fiber amplifier article about fiber amplifier by the. Development of thulium doped fiber amplifier and laser for. Superhighspeed mode applicat ion features appearance applicable amplifier unit sensing distance mm values in parentheses. Generalpurpose capabilities to simply handle a broad range of applications.
Digital fiber amplifier e3xdan the ultimate fiber amplifier for maximum ease of use and high performance be sure to read safety precautions on page 23. Ytterbiumdoped optical amplifiers have become common tools for industrial applications due to their high efficiency, relatively low cost and potentially very high output power level. Description of symmetricom fiberoptic distribution amplifier and receiver highintegrity distribution of a common clock is the backbone for powerutility substation synchronization. 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. The book guides the reader from the most fundamental aspects of fiber amplifiers all the way to system design and applications. By adjusting the powers and orientation of input pump modes, modal dependent gain can be tuned over a large dynamic range. So ase is always present in edfa, and it is the main source of. Pdf dualwavelength, passively qswitched thuliumdoped.
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