Output signal power analysis in erbiumdoped fiber amplifier. Thorlabs corepumped erbium doped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of erbium doped fiber amplifiers of the cefalpblp are optimized for lband spectrum. A limit in signaltonoise ratio that is due to concurrent amplification of spontaneous emission is observed. The born of edfa was the breakthrough in fiber optic communications, it is the erbium doped fiber amplifier that makes long distance and high speed fiber communication possible, edfa is important components used in dwdm and all fiber networks. Erbiumdoped fiber amplifiers fundamentals and technology optics and photonics formerly quantum electronicsedited. Optostar 64667c 1550 nm erbium doped fiber amplifier. Introduction erbiumdoped fiber amplifiers are the by far most important fiber amplifiers in the context of. Erbiumdoped fiber amplifier edfa is a series of optical power amplifiers specially designed for optical fiber laser or optical fiber communication systems. 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. Exciting erbiumdoped planar optical amplifier materials. A passively modelocked fiber laser is then built up. Erbiumdoped fiber amplifiers are traditionally pumped with either 980 nm or 1480 nm laser diodes, which correspond to exciting 11 2 4i and 2 4i levels respectively. An optical fiber amplifier whose fiber core is lightly doped with trivalent erbium ions which absorb light at pump wavelengths of 0. Erbium doped fiber amplifiers has been written by early pioneers in the development of fiber amplifier technology and optically amplified systems.
It is shown that when the wavelength of the seed light varies from 1520 to 1570 nm, the gain at 1610 nm reaches maximum near 1553 nm and increases as the seed light power. Unfortunately or fortunately, we have discovered that at the lasing time there is no amplification or the signal travels the erbium doped fiber core without any amplification or absorption. The emcore mafa 5000 series micro erbium doped fiber amplifier. The core of the fiber is doped with erbium and is typically pumped with 980 or 1480 nm to produce gain around 1550 nm cband or 1590 nm lband. It is one of the greatest invention in optical communication. An erbium amplifier, also called optical amplifier or an erbiumdoped fiber amplifier or edfa, is an optical or ir repeater that amplifies a modulated laser beam directly, without optoelectronic and electrooptical conversion. The edfa amplification region varies from application to application and can be.
We report the experimental setup of a high power pulsed erbiumdoped fiber amplifier. The benchmark ets is an edfa erbium doped fibre amplifier training system. This article also gives y ou advantages and disadvantages of edfa to know more details about edfa. 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. Another approach for a low cost amplifier was to replace the erbium fiber erbiumdoped waveguide with a piece of erbiumdoped glass. Performance analysis of erbium doped fiber amplifiers and fwm characteristics in a passive optical network. They are also designed to amplify a single narrow linewidth signal. Implementation of three functional devices using erbium. Exciting erbiumdoped planar optical amplifier materials a.
The software allows the reader to explore on his or her own the concepts of amplifier performance discussed in the book, and gain a more intuitive and interactive educational experience leading to a richer understanding of erbium. This process results in an unusually mechanically simple laser optical amplifier for signals transmitted by fiber. Cw erbium doped fiber amplifier 8 different families. Osa amplification and noise properties of an erbiumdoped. Erbium doped fibre amplifier edfa is an optical amplifier that amplifies optical signals sufficiently enough to cover several tens of kilometers without any need for conventional repeaters. The amplified output signals can be transmitted through 60100km before further amplification is required.
Erbium fiber amplifiers is a comprehensive introduction to the increasingly important topic of optical amplification. By cooling the fiber to 77 k, the amplifier gain is. High gain erbiumdoped fiber amplifier for the investigation of. Sep 03, 2015 the signals and pump are combined through a wdm coupler and launched into an erbium doped fibre edf. Fibercore offers a number of different doped fibers including erbium doped fiber for various c and l amplifier configurations and ase applications.
Erbiumdoped fiber amplifier market size, share, growth. Download pdf download citation view references email request permissions export to collabratec alerts metadata. The cross port transfer function of the optical circuit is expressed by a fourier series as. Particularly, in this region the erbium doped fiber amplifiers edfa are widely used. It will excel as an introductory text in upperlevel undergraduate and graduate courses on system applications of fiber optics. Erbiumdoped fiber amplifiers edfas ipg photonics telecom. Doped fiber amplifiers dfas are optical amplifiers that use a doped optical fiber as a gain medium to amplify an optical signal. Additionally, the transmission mode of the optical fiber at the pump wavelength has a radius which is substantially equal to or greater than the radius of the. Written by three bell labs pioneers, the book stresses the importance of the interrelation of materials properties, optical properties. Ftth receiver or100mw with fwdm subscribe our newsletter to get our updates and stay. Optostar 64667c 1550 nm erbium doped fiber amplifier the optostar 64667c 1550 nm erbium doped fiber amplifier edfa is designed for multiplex distribution configuration and long distance relay transmission network configuration in conjunction with the 1550 nm optical transmitter.
Pdf erbiumdoped fiber amplifier edfa is an optical amplifier used in the c band and lband, where the loss of telecom optical fibers becomes lowest. High power erbiumdoped fiber amplifier eydfahp is based on the doubleclad erbiumdoped fiber amplification technology, a unique optical packaging process is adopted and a reliable hardware optical path protection design is adopted to realize the highpower laser output of cband or lband. Thorlabs corepumped erbiumdoped fiber amplifiers edfas offer 20 dbm 100 mw output power with a low noise figure of download pdf inquire now. These amplifiers operate in demanding thermal, vibration, and radiation environments. Erbium doped fiber amplifier research papers academia. A laser efficiency of 20 % is obtained with an output power of about 8 w for 40 w pumping power. Edfa is an optical device that amplifies the optical signals without optoelectronic and electro optical conversion. Erbiumdoped fiber amplifiers have attracted the most attention because they operate in the wavelength region near 1. This device features high output power, high gain, low power consumption and low noise figure. In the last case, there are two levels in the light generation. Users may download and print one copy of any publication from the public portal for the purpose of.
At least the loss limitation can be partially canceled out by the introduction of optical. The pump and signal radiation were coupled to individual cores of mcedf using two tapered fiber bundled tfb couplers with low insertion loss. The amplifying scheme is based on a 3 level lasing system rather than the more prevalent 4 level lasing system. This article aims to give a brief introduction to the most deployed fiber amplifiererbium doped fiber amplifier edfa. Erbium doped fiber amplifiers are traditionally pumped with either 980 nm or 1480 nm laser diodes, which correspond to exciting 11 2 4i and 2 4i levels respectively. Erbiumdoped fiber amplifiers, device and system developments. A midstage access output offers the possibility to add fiber component or to synchronize the system with different measurement instruments. Edfa stands for erbium doped fiber amplifier, an optical amplifier are also called erbium doped fiber amplifier or edfa.
There are 3 groups of energy levels denoted by u, m and g representing the upper, metastable and ground states respectively. The raising of ions to higher energy levels is achieved by two pump level. Fundamentals and technology optics and photonics kindle edition by becker, philippe m. The erbium fiber has a limit on the coil diameter of about 2 inches to obtain high reliability. Rp photonics encyclopedia erbiumdoped fiber amplifiers. Erbium doped fibre is the core technology of edfa, which is a conventional silica fibre doped with erbium ions as the gain medium. Erbiumdoped fiber amplifier fiber transceiver solution. The multiple application platform map erbiumdoped fiber amplifier medfaa1 is optimized for the industryleading map200 platform from jdsu.
To analyze the dynamic characteristics of the highpower ytterbiumdoped doubleclad fiber amplifier considering pulses in repetition rates of khz, a dynamic ytterbiumdoped fiber model is necessary. In this case, an optical fiber amplifier is required to achieve signal amplification in long distance optical communication. It is used in the telecommunications field and in various types of research fields. Fiber lasers, pm amplifiers edf50 pm 27281 a pm fiber with absorption of 50 dbm at 1530 nm.
Erbiumdoped fiber amplifier article about erbiumdoped. S plus cband erbiumdoped fiber amplifier in parallel. 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. All supported by our gainmaster simulation software to help you design even the most complex edfas. The typical fiber amplifier works in the 1550 nm band and consists of a length of fiber doped with erbium pumped with a laser at 980. Erbiumdoped fiber amplifier, is the most deployed optical amplifier in the wdm system that uses the erbiumdoped fiber as optical amplification medium to directly enhance the signals.
The stability pump optical laser and unique apc automatic power control circuit are employed in it as the key component. Performance analysis of erbium doped fiber amplifiers and. Two wave mixing in erbiumdoped fiber amplifier for modulation depth enhancement of optically carried microwave signals. In particular, the erbiumdoped fiber amplifier edfa is one example of an optical fiber amplifier that is widely known for use in amplifying optical. The optimum fiber length for maximum gain is determined experimentally. Erbium doped fibre amplifier edfa manufacturer from delhi.
Each amplifier consists of a length of erbiumdoped fiber. The development of erbiumdoped fiber amplifier edfa. Edfa erbiumdoped fiber amplifier is an optical device used to compensate optical signal attenuation caused by fibers and components, to increase optical transmission distance. Edfa erbium doped fiber amplifier tutorial exfiber optical technologies co.
Device and system developments brings telecommunications professionals up to date. The amplifying medium is a glass optical fiber doped with erbium ions. The pump current of the ytterbiumdoped fiber amplifier is adjustable through the instruments front panel, allowing the user to vary the gain and output power of the amplifier. The term doping refers to the process of using chemical elements to facilitate results. The fiber has an elliptical core design with high erbium concentration making it attractive for very short fiber use in the laser cavity. Erbiumdoped fiber amplifiers have revolutionized undersea transmission systems owing to their outstanding characteristics. Stability of a 500 km erbiumdoped fiber amplifier cascade dtu orbit. Edfa has the advantages of high gain with very low noise, and supports upper computer software control, compact size for integration, can provide desktop or modular packaging. In this paper we design a 120 nm bandwidth erbium doped fiber amplifier using a seed light injection method for the first time. Characterization of a highpower erbiumdoped fiber laser. Erbium doped fibers provide the basic building blocks for fiber optic amplifiers more. Features high output power high gain low noise figure applications optical networks lab applications testing types cband. Users may download and print one copy of any publication from the public portal for the purpose of private study or research.
Principles and applications these are just a handful of the essential questions answered in erbiumdoped fiber amplifiersthe first book to integrate the most influential current papers on this breakthrough in fiberoptics technology. It is first studied an allfibered continuous laser. Com dwdm edfa fiber amplifier is a lownoise, gainflattened cband optical erbium doped fiber amplifier designed to extend the distance in dwdm optical infrastructure. Optical amplifier edfa erbiumdoped fiber amplifier. In addition, remote control of the pump current is supported by sending serial commands via a. A new s plus cband erbiumdoped fiber amplifier edfa module with coupled structure over 96 nm gain bandwidth of 14801576 nm has been experimentally investigated and demonstrated. The device uses a short length of optical fiber doped with the rareearth element erbium. Erbiumdoped fiber amplifiers have revolutionized undersea transmission systems owing to their. With over 30 years experience of the specialty optical fiber industry, fibercore ltd, the world leader in its field, is exclusively dedicated to the design, manufacture and commercialization of specialty fibers. It is the design according to the communication level standard, in terms of power, precision and.
Most important element of edfa technology is the erbiumdoped fiber edf, which is a conventional silica fiber doped with erbium. Erbium doped fibre amplifier edfa used in wdm system. Edfa erbium doped fiber amplifier physics and radio. Erbiumdoped fiber amplifiers are the by far most important fiber amplifiers in the context of longrange optical fiber communications. Implementation of three functional devices using erbiumdoped fibers. Department electrical engineering, the federal polytechnic, ilaro, nigeria.
This option allows users to search by publication, volume and page selecting this option will search the current publication in context. Erbium doped 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. Novel splitband erbiumdoped fiber amplifier sciencedirect. Lumibird proposes the widest range of highquality cw erbium doped fiber amplifier edfa. The book guides the reader from the most fundamental aspects of fiber amplifiers all the way to system design and applications. Erbium doped fibers provide the basic building blocks for fiber optic amplifiers more specifically erbium doped fiber amplifiers edfas used in broadband optical networks and catv applications. Based on the previousgeneration map, the map200 is the first photonic layer lab and manufacturing platform that is lan extensions for instrumention. Introduction erbium doped fiber amplifiers are the by far most important fiber amplifiers in the context of longrange optical fiber communications.
Erbium doped fiber amplifier 1u standalone edfa cdata. When the pulse is turned off, damped oscillations are observed too with the same period. Erbiumdoped fiber amplifier are being utilized as a part of scientific and medical applications to satisfy the prerequisite for interchanges. High gain pulsed erbiumdoped fiber amplifier for the nonlinear. Numerical methods are used to analyze the effects of optical modes and erbium confinement on amplifier performance, and to calculate both the gain and amplified spontaneous emission ase spectra. Fundamental design of a distributed erbiumdoped fiber amplifier for. The most common example is the erbium doped fiber amplifier edfa, where the core of a silica fiber is doped with trivalent erbium ions and can be efficiently pumped with a laser at or near a wavelength of 980 nm or 1480 nm, and exhibits gain in the 1550 nm region. The book is an indispensable reference for researchers, development engineers, and system designers in fiberoptic communications. Fundamental design of a distributed erbiumdoped fiber amplifier for longdistance. Users may download and print one copy of any publication from the public portal for the. The erbiumdoped fiber gain medium amplifies light at wavelengths that are in the. Ipg photonics erbiumdoped fiber amplifiers edfas have. Erbiumdoped fiber an overview sciencedirect topics. Combining the contributions from four international experts in edfas, this new volume expands the readers conceptual understanding of edfas and covers the developmental issues of edfas that are relevant to modern telecom applications.
With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. Selecting this option will search all publications across the scitation platform selecting this option will search all publications for the publishersociety in context. Principles and applications these are just a handful of the essential. What are the current types and architectures of amplifierbased systems. A multicore erbium doped fiber mcedf amplifier for simultaneous amplification in the 7cores has been developed, and the gain and noise properties of individual cores have been studied. Fiber laser and fiber amplifier are merged in one configuration which called erbium doped fiber laser and amplifier edfla or integrating edfl and edfa in one design. Erbium doped optical fiber is incorporated a small amount of a rare earth element erbium er ion. An erbiumdoped fiber amplifier edfa is a device that amplifies an optical fiber signal. For a pump power of 146 mw, the average gain achieved in the. Review of erbiumdoped fiber amplifier 23 september 2011. Polman fominstitute for atomic and molecular physics kruislaan 407, 1098 sj amsterdam, the netherlands abstract erbiumdoped planar optical amplifiers can find numerous applications in photonic integrated circuits operating at 1. The core element of a fiber amplifier is a piece of rareearthdoped fiber, which can provide. The headway in consumer electronics is anticipated to trigger the interest for erbiumdoped fiber amplifier in coming years.
Download product flyer is to download pdf in new tab. The software allows the reader to explore on his or her own the concepts of amplifier performance discussed in the book, and gain a more intuitive and interactive educational experience leading to a richer understanding of erbium doped fiber amplifiers and their applications. Osa highgain erbiumdoped travelingwave fiber amplifier. Eindhoven university of technology master an optical amplifier. The first case can be described by a threelevel laser model whereas the second case is a quasithreelevel system.
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. 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. View erbium doped fiber amplifier research papers on academia. This invention is a rare earth doped optical amplifier with increased gain and lowered pump thresholds. The objective of this lesson is to demonstrate the amplification of a sequence of gaussian pulses by an ytterbiumdoped fiber amplifier using the dynamic model. Fiber lasers, pm amplifiers rightwave highly doped erbium edf, ytterbium and thulium doped edf. Lumibird developed patented technologies to improve pumping efficiency, reducing, therefore, power consumption and increasing lifetime. Bruce nyman, gregory cowle, in optically amplified wdm networks, 2011. Helmy department of electrical and computer engineering, university of toronto, 10 kings college road, toronto, on m5s 3g4, canada. In this video, i have covered erbium dopped fiber amplifier edfa with following outlines. Erbiumdoped fiber amplifier ieee conference publication. Use features like bookmarks, note taking and highlighting while reading erbiumdoped fiber amplifiers. Pdf erbiumdoped fiber amplifier edfa is an optical amplifier used in the cband and lband, where the loss of telecom optical fibers becomes lowest. One requirement is that the erbiumdoped glass has very high gain in a short length.
Our edfa products feature the compact size, low consumption and easy to use. Customized sdh erbiumdoped fiber amplifier datasheet fs. Erbiumdoped fiber amplifiers are modeled using the propagation and rate equations of a homogeneous twolevel laser medium. Erbium dopedfiber amplifiers edfas peter, in a recent news analysis you described several amplifier technologies for the metro environment. Erbium dopped fiber amplifier edfa basics, working. In addition, the trend is to increase the effective area of the link fiber. The deployment of edfa in wdm systems has revolutionized the field of optical fiber. Oct 06, 2018 laser driver for high power erbium doped fiber amplifier edfa 6 p a g e the energy level diagram of erbium doped region of the core is as shown in figure 2.
Simulation experiments have demonstrated that this amplifier can get high performance. The pump laser supplies the energy for the amplifier, while the incoming signal stimulates emission as the pulse passes through the doped fiber. At higher pump powers, the pump drops very rapidly, due to depletion of the pump by the backward ase. It provides customers the capability to extend up to 40 channels, 2. We are one of the leading manufacturer of catv erbiumdoped fiber amplifier erbium doped fiber amplifier is mainly used for television image signals, digital tv, telephone voice signal and the signal of the data or compressed data optical fiber transmission over a long distance. Optik one of the most comprehensive and detailed accounts of the physics and fundamental principles of. Apr 15, 20 erbium doped fiber amplifier edfa is the first successful optical amplifier invented by the uk southampton university and jp tohoku university. Two wave mixing in erbium doped fiber amplifier for modulation depth enhancement of optically carried microwave signals. Modeling erbiumdoped fiber amplifiers ieee journals. Sep 23, 2011 download fulltext pdf download fulltext pdf. Fiber amplifiers are used widely in terrestrial telecommunications, and are now finding their way into uav and satellite laser communications.