The aim of this article is to establish a comparison between the edfa erbium doped fibre amplifier and soa semiconductor optical amplifier optical amplifiers in the wdm wavelength division. International journal of photonics and optical technology vol. Multiple communication devices, like optical transmitters and receivers, are used in optical fiber. Boosting of an optical signal without any conversion of the. They have a similar structure to fabryperot laser diodes but with antireflection design elements at the end faces. The laser is based on rayleigh backscattering in a standard single mode fiber of 2 km length acting as distributed mirrors and a semiconductor optical amplifier soa acting as the optical amplifier. Generally the optical amplifier consists of fiber raman amplifier fra, erbiumdoped fiber amplifier edfa, and semiconductor optical amplifier soa. Soa module for 100gbaseer4 sumitomo electric industries. Picwave can be used in combination with harold to model an semiconductor optical amplifier soa in the time. Soa is miniature in size and can be integrated with other photonic devices, but may suffer from interchannel cross talk due to fast gain dynamics. One has to operate such a fabryperot amplifier fp amplifier slightly below the laser threshold.
Pdf characterization of wideband semiconductor optical. Fiber optical signal in fiber optical signal out pump power optical amp medium weak signal amplified signal some types of oas that have been demonstrated include. Before the comparison of the different types of optical amplifiers, lets take a closer look at fiber optic amplifier. If you do not see what you are looking for, ask an expert. Performances of both these amplifiers have been studied for a wdm network on the basis of their position i. Jan 10, 2015 there are several different optical amplifiers with which to passively amplify an optical signal. Today, we are going to study and compare different types of optical amplifiers in this paper. The transmission loss of the light passing through optical fiber is the very small value of less than 0. Various optical amplifiers edfa, fra, and soa what is an optical amplifier. Soa a booster optical amplifier boa is a polarization sensitive device that only amplifies light with a specific polarization. Fiber coupled optical amplifiers are offered and exhibit low coupling losses. For applications where the input polarization is unknown or fluctuates, a semiconductor optical amplifier soa is required. Semiconductor optical amplifiers soas light reading.
We have developed a small soa module for the cfp optical transceiver. Semiconductor optical amplifier soa and erbiumdoped fiber amplifier edfa are two of the main types of optical amplifiers, and they were used in this simulation model to analyze their performance, with a data rate of 622 mbs stm4 level and 170 km optical fiber length for each simulation model. Types of optical amplifiers, raman amplifier vs edfa. Optisystem software is a modern simulator tool for designing, testing. Amplification of ultrashort optical pulses in soa produces considerable spectral broadening and distortion due to the nonlinear. Our benchtop boas are available with center wavelengths at 1050, 0, 1550, 1590, and 1625 nm. Post amplifier, inline amplifier, and pre amplifier. Semiconductor optical amplifier an overview sciencedirect. Rp photonics encyclopedia noise figure, quantum noise.
The technology of semiconductor amplifiers competes with that of erbiumdoped fiber amplifiers edfas. The edfa was used to increase the combined signal power in order to saturate the soa. Semiconductor optical amplifier soa device has been utilized extensively as. The edfa folder contains the erbiumdoped fiber model and other models to allow the. We put the power parameter in the cw laser in sweep mode and. Both edges of the soa are designed to have very low reflectivity so that there are no unwanted. Rp photonics encyclopedia semiconductor optical amplifiers, soa. Soa as a wavelength converter xgm this lesson demonstrates the application of traveling wave soa as a wavelength converter using crossgain saturation effect. Optical fiber transmission has revolutionized networking and communication systems.
The soa module was miniaturized by optimizing the internal components. A novel narrowlinewidth dualwavelength random fiber laser with singlemode operation, based on the semiconductor optical amplifier soa gain, is achieved in this work for the first time, to the. Picwave can be used in combination with harold to model an semiconductor optical amplifier soa in the timedomain. Any information about this or any websites which can help me. Initially, we are going to characterize the soa response to the variation in the input signal power. Cband optical amplifiers boas and soas, 1550 nm thorlabs, inc. Figure 1 shows the system layout used in the simulation. Semiconductor optical amplifiers soas fiber raman and brillouin amplifiers rare earth doped fiber amplifiers erbium edfa 1500 nm. Erbium doped fiber amplifier edfa, semiconductor optical amplifier soa, and raman fiber amplifier rfa, all of which use a technique called laser pumping. Map series oband optical amplifier soamsrcc23000sa.
For pm fiber coupled soa, key aligned fcapc connector is narrow key type with its key aligned to slow axis of the pm fiber and the polarization of the output. Erbium doped fiber, amplifiers libraryopticaledfa, optical system erbium doped fiber. Ask rp photonics for advice on how to characterize the noise of amplifiers, to calculate its effects, etc. The objective of this lesson is to characterize a semiconductor optical amplifier soa through simulations. The optilab soa 1550m is a semiconductor optical amplifier with high fiber to fiber gain, designed to be used in general applications to increase optical launch power to compensate for loss of other optical devices. The 1550 nm nonlinear soa from kamelian is a fiber optic amplifier with noise figure 8 10 db, signal gain 10 db, wavelength 1530 to 1570 nm, operating temperature 5 degree c. Semiconductor optical amplifiers booster optical amplifiers are amplifiers which use a semiconductor to provide the gain medium. It is a lossless, high extinction ratio and potentially highly polarizing device.
It is designed to be used in transmitter applications to increase optical launch power to compensate for loss of other optical devices. Oequest equipment amplifier, raman, soa semiconductor. Unlike the edfa, which is energized with a laser pump, the soa is energized with electrical current. Short fiber links 010 km are dominated by nonlinear distortions in the soa preamplifier minimum eml extinction ratio 810 db minimum attenuation recommendation may alleviate nl distortions long fiber links 1040 km are dominated by osnr degradation in the soa preamplifier minimum eml extinction ratio 810 db. Used in extreme temps, corrosive or vacuum chamber environments. Pdf lossless wdm pon photonic integrated receivers. The suitable amplifier is one way to deal with the effects of linear and nonlinear disturbances as well as maximize the working of optical transmission media. Amonics soa is a polarization maintaining optical amplifier with high fiber to fiber gain. Soa as inline amplifier in soliton communication systems one possible way to upgrade an existing network from previously installed standard optical fibers is to exploit the 1.
Soa amplifiers use a semiconductor to provide the gain medium, the structure of soa is similar to semiconductor lasers. Comparison of the optical amplifiers edfa and soa based on. Semiconductor optical amplifier travelingwave amplifier inphenix. Soa design we already discussed basic soa design in the general lecture about optical amplifiers where we emphasized that a traveling wave tw amplifier, which relies on a singlepass gain, ideally has no mirror reflections and is the most desirable layout. Products semiconductor optical amplifiers soa semiconductor optical amplifiers booster optical amplifiers are amplifiers which use a semiconductor to provide the gain medium. Soa semiconductor optical amplifier model simulation with. They consist of an active part and a passive part made of a semiconductor material such as indium. Also, we have achieved soa amplification characteristics required for the longdis. Soa as inline amplifier in soliton communication systems.
Comparison of the optical amplifiers edfa and soa based on the. Fiber optic sensors are small enough to fit in confined areas and can be positioned precisely where needed with flexible fibers. More details for 1550 nm nonlinear soa can be seen below. An optical fiber amplifier is a fiber optic device used to amplify optical signals directly without conversion into electrical signals. Thorlabs offers both free space and fiber coupled versions of its boas and soas. If you need a broader gain, consider part number qsoai1060b with 90nm gain bandwidth and 30db gain. Soa cl is optimized to achieve moderate gain, low noise and high saturation power. Our boas are pigtailed with pm fiber and will amplify light aligned to the slow axis of the input fiber connector. Get product specifications, download the datasheet, request a quote and get pricing for soa 1117 on gophotonics. Semiconductor optical amplifiers soa amplifiers, when driven in pulse regime with our pulsed soa driver become a high dynamic range fiber modulation solution available from 750 to 1700 nm.
Soa amplifier uses a technique similar to that of edfa but without doping the optical fiber. The setup is much more compact, containing only a small semiconductor chip with electrical and fiber connections. Currently it is not possible to create a fully optical communication system without a software tool which simulates an optical communication line in real conditions prior to its construction. Dec 16, 2014 edfa, semiconductor optical amplifier soa and fiber raman amplifier. Currently it is not possible to create a fully optical communication system without a software tool which simulates an optical communication line in real conditions. Booster optical amplifiers boas are singlepass, travelingwave amplifiers that perform. The benchtop version incorporates a userfriendly front panel housing with a lcd monitor display, key. An optical amplifier may be thought of as a laser without an optical cavity, or one in which feedback from the cavity is suppressed. Advanced epitaxial wafer growth and optoelectronic packaging techniques enable a high output saturation power, low noise figure, and large gain across a broad spectral bandwidth. As loss requirements for 100ge, 200ge and 400ge transmission continue to decrease, optical amplifiers like this oband optical amplifier, have become a critical element in the test automation tool kit, alongside attenuators, power meters and switches.
Free space versions are offered either as a chip on submount c or chip on heatsink h. Semiconductor optical amplifier soa, erbiumdoped fiber amplifier edfa, and fiber raman amplifier are presented. Analysis of 4x25gbs 40km 10nm pmd with soa preamplifier. Semiconductor optical amplifiers soas im doing a project on optical signal amplifiers. Optical amplifiers for nextgeneration telecommunication. The heterostructure of the soa will first be modelled in harold, which will produce a set of material gain curves at different carrier densities. Characterization of wideband semiconductor optical amplifiers. Semiconductor optical amplifiers are optical amplifiers based on semiconductor gain media.
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. Products semiconductor optical amplifiers soa semiconductor optical. A versatile, costeffective choice for many applications. Analyses of semiconductor optical amplifier soa fourwave. The principle use of the crossgain modulation in soa is as an intensitymodulated input signal that modulates the gain in the soa via gain saturation effect. Optical amplifiers designing optical fiber amplifiers.
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