Simulation results of the edfa characteristics such as amplified spontaneous emission, gain, noise figure, and gain spectrum are compared with corresponding experimental values. May 22, 2019 download quite universal circuit simulator for free. Modelling of multimode erbiumdoped fibre amplifiers for. Erbiumdoped fiber amplifier description of the model. The two pump wavelengths considered were 980 nm and 1480 nm. Analysis of four channel cwdm transceiver modules based on. Comparison of the optical amplifiers edfa and soa based on. On this page we provide links to free eda software. Optiamplifier optical fiber amplifier and laser design. Illustrates the effect of the fiber refractive index profile frip on the differential modal gain dmg in the erbiumdoped multimode fiber amplifier edfa. Free circuit simulatorcircuit design and simulation software. Rp fiber power simulation and design software for fiber. They enable the characterization of the gain, noise figure, and output power under unsaturated and saturated signal input regime.
Gain flatness and noise figure optimization of cband edfa in 16 channels wdm system using fbg and gff chakkour mounia 1, aghzout ot man 2, a it ahmed badiaa 3, chaoui fahd 4. Optiamplifier is an optical amplifier and laser design software, developed to address all aspects of edfa raman amplifier engineering. The commercial software namely optsim was used to model and design the edfa in the wdm system. In this paper the gain is investigated with various pumping power. I wish there are some specialists showing up to solve my problem since it puzzles me for a long time. It allows you to create and simulation different network topologies. It guru provides prebuilt models of protocols and devices. Comparison of the optical amplifiers edfa and soa based on the ber and factor in cband. Circuitlogix is a software program that converts your personal computer into a fullyfunctioning electronics laboratory with thousands of components and devices that are easily interconnected. A singlestage forward or backward pumped 980 nm or 1480 nm doped fiber amplifier.
One demerit of edfa is that it adds noise and some nonlinearity to the amplified signal 14. A computer based simulator for erbiumdoped fiber amplifier. A parameter sweep is used in simulation to get the ase power exiting from the fiber end as the function of pump power. In the mmedfas, minimizing the differential modal gain dmg is of. 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. Optisystem projects based projects is a comprehensive simulation package developed by optiwave. Here we get a good idea of the bidirectional pumping scheme. Syrthes is a general thermal software dedicated to transient thermal simulations in complex solid geometries. Rp fiber power is a powerful modeling software for designing and optimizing fiber devices in particular, fiber amplifiers and lasers as well as other types of waveguide lasers, but also fiber couplers, multicore fibers, helical core fibers and tapered fibers the software offers both efficient power propagation and full numerical. Calculates complex eigenmodes of propagation in planelayered structures. A java simulation tool for fixedpoint system design. These tasks range from optimization of the associated optical components to estimation of system link budgets and power penalties. Vpiphotonics sets the standard for software and services supporting endtoend photonic design automation and optical equipment configuration. Comparison of the optical amplifiers edfa and soa based.
Performance analysis of optical amplifiers edfa and soa. Jun, 2011 optisystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks. Erbium doped fiber amplifier edfa for cband optical. Both signal and pump modes have an approximately gaussian intensity distribution, with slightly different mode radii. The simulations have been carried out using the commercially available software optiamplifier 6. The pumping direction and wavelength are set using an attached script, so the differences in pumping schemes can be easily compared. 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. The ultimate tool for passive and active fibers devices. Simulation software is available commercially which can realistically model an optical link. Simulation of edfa raman hybrid amplifier achieving gain flattening for long haul dwdm systems bilal, syed muhammad, dr. The book covers the most issue of edfa, from components used in edfa to optical system, even simulation software i have used the software, but it is not easy to learn and not flexible for edfa design. Performance analysis of erbium doped fiber amplifiers and.
These software programs allow for simulations of edfa models that are mostly static. Ngspice is developed by a collective effort from its users and its code is based on 3 open source software packages. This phd thesis, undertaken within the framework of modegap, covers the design and optimization of highperformance inline multimode erbiumdoped fiber amplifiers mmedfas or fewmode fm edfa for nextgeneration sdm transmission systems based on modedivision multiplexing mdm. This system is simulated using opti system software to achieve gain flatness of edfa through variation of edfa pump power and input power of system. Opnet network simulator is a tool to simulate the behavior and performance of any type of network. This simulator combines a steadystate model of a discrete raman amplifier ra with a spectrally resolved model for the erbium doped fiber amplifier edfa. This paper involves the simulation of an edfa using optisystem and analyzes the gain and noise figure of edfa. This is an elementary building block for power transient analysis in edfa based networks. Transient effect to small dutycycle pulse in cascaded. Optisystem is a comprehensive simulation package developed by optiwave.
From this paper pumping power required for edfa can be investigated. Clarity is paramount when determining the structurelayout of your dissertation. Maxfem is an open software package for electromagnetic simulation by using finite element methods. The software applications include single and multistage amplifiers for singlechannel or wdm networks. Currently, the simulation tools available to investigate edfa dynamics consist of oasix and the photonic transmission design suite ptds 3. This experiment was done using 8 channels cwdm system from 1470 to 1610 nm and uses two optical amplifier soa and hybrid edfa when connected in the system. Edfa for 1480nm pumping explicit pump power dependence.
To download the free 15day trial of circuitlogix student version, please provide the following information. The basic principles of dwdm system dwdm technology is to make full use of huge bandwidth resources from lowloss singlemode fiber district. Limitation in the intrinsic method of edfa gain optimization. A circuit simulator with graphical user interface gui qucs is a circuit simulator with graphical user interface. Home browse by title proceedings simutools 09 a java simulation tool for fixedpoint system design. Gain and noise figure performance of erbium doped fiber amplifiers edfa. Erbium doped fiber amplifiber edfa model file exchange. Map erbium doped fiber amplifier medfa the map series erbium doped fiber amplifiers medfac1 meet some of the most demanding optical specifications including a lownoise version with downloads. The software aims to support all kinds of circuit simulation types, e. Improved analysis of hybrid optical amplifier in cwdm system. However, the simulink model developed in 3 provides for a dynamic edfa model with the ability to modify the input. Ramakrishnan college of technology, trichy621112,tamil nadu.
Not all of it has been checked out by us, so buyer beware. The numerical simulator allows us to calculate the overall gain, the noise figure nf, the optical signaltonoise ratio osnr and the signal and ase spectrum at the output of a raman. Based on the simulation software optisystem, a 32channel dwdm pointtopoint transmission system simulation model was designed in this paper. After many such experiments the statistics are computed, including the. I have read the propagation equation and rate equation about threeenergy level for erbium amplifier. Optisystem enables users to plan, test, and simulate in both the time and. Last year, the edfa simulink model produced in 3 was reproduced by jean jiang in 4. Demo illustrates electronic gain clamping of edfa using the picontroller in a wdm link. Nevertheless, the results found are in good qualitative agreement with the paper.
Simulation and experimental characterization of ramanedfa. Also, simulink is a wellknown simulation tool that is less specialized than ptds and oasix, therefore being more readily available. Method analysis the software optisystem is used as a simulation tool to simulate the design for edfa in the wdm system. The erbium doped fiber amplifier provides a way of amplifying all wavelength simultaneously. Optiwave is the emerging leader in the development of innovative software tools for the design, simulation, and optimization of components, links, systems and networks for the dynamically growing fields in photonics nanotechnology, optoelectronics, optical networks and other photonic applications. Longperiod fiber grating can act as a kind of wavelength selective loss device, in which the guided mode is coupled with forward transmit cladding modes. Vpiphotonics doped fiber amplifiers sdm control of the differential modal gain through refrective index profile optimization. Doped fiber amplifier and fiber laser file exchange. Demonstrates the modeling of edfas with explicit dependence on 1480nm pump power by applying an edfa black box model. Gain spectrum, gain saturation, and amplifier noise.
Oct 25, 2014 simulation of analytical model of erbium doped fiber amplifiber edfa. The distinct difference also determines the most suitable photodetectors to be used at the receiver point of the optical amplifier circuit. A java simulation of a typical epr experiment by creating entangled particles that are sent to two detectors a and b. Gain and noise figure analysis of erbium doped fiber. Pdf gain and noise figure performance of erbium doped. Before starts to design, need to identify the best simulators software that is suitable to design this optical network. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. To compare with the experimental results, an edfa is specially designed for simulation using the er doped fiber dynamic module, which is specially designed for the time scales on the order of microseconds or longer in the optisystem software, and the details of the algorithm for this module is based on the solution of the propagation and rate equations for transitions between. Circuit simulation software free download circuit simulation top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. Simulation of gain flattening 32 channels edfadwdm. Simulation for photonics and optical circuit knowledge. Optiperformer optiwave introduces optiperformer, a freeware complement to optisystem. The first implementation of active fiber optic amplifier was demonstrated in 1994 with erbiumdoped fiber amplifier edfa. Circuitlogix electronics lab simulation provides fast, powerful schematic design and simulation in one complete program.
This example demonstrates modulation of a pumps optical power to produce gain modulation in an edfa, and is based on the parameters and results in 1. This example repeats some of the numerical studies from 1, illustrating the advantages of large pump claddings for the minimization of ase noise in the amplifier, and therefore improved noise figure nf. Created to address the needs of research scientists, optical telecom engineers, system integrators, students and a wide variety of other users, optisystem satisfies the demand of the evolving photonics market for a powerful yet easy to use optical system design tool. Optisystems cpp component, similar in operation to the matlab component, allows users to create their own custom components. Oct 24, 2017 simulation software is used widely to design equipment so that the final product will be as close to design specs as possible without expensive in process modification. 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. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and. Optiperformer empowers research colleagues, sales and marketing teams, and students with a full working freeware simulation environment enabling them to load existing optisystem files, run full simulations, and view results. Rp fiber power is a powerful modeling software for designing and optimizing fiber devices in particular, fiber amplifiers and lasers as well as other types of waveguide lasers, but also fiber couplers, multicore fibers, helical core fibers and tapered fibers. Ngspice one of the popular and widely used free, open source circuit simulator from sourceforge. The package can solve problems in electrostatics, direct current, magnetostatics and eddycurrents. Its awardwinning products are used by forwardlooking groups, product design and marketing teams from over 100 commercial corporations and educators in over 120 university programs across the world. Simulation bandwidth 50mhz option order sampling digit 14 digit. It todays date is later than that, all bets are off.
Click here to go to our main page on computeraided design. It seems to me, the authors have deep experienced working background in this field. The fiber exhibits singlemode propagation at the signal and pump wavelength. A real time multichannel dynamic erbium doped fiber amplifier edfa simulink model with flat gain and gain clamping facility has been developed on a matlab platform. The university of western australia, perth, wa, australia. A scenario using cascade longperiod fiber gratings to flatten the gain spectrum of the erbium doped fiber amplifier edfa is presented. In that respect, the thesisbychapter format may be advantageous, particularly for students pursuing a phd in the natural sciences, where the research content of a thesis consists of many discrete experiments. The gain of the edfa will be flattened by optimizing the fiber length and pump power. We model the edfa simulator with onedimensional nonlinear differential equation that describes the time dependent population density.
The main difference opnet network simulator comparing to other simulators lies in its power and versatility. Rare earth amplifiers become a major component as an active device in fiber optic communication systems because of there is no requirement of electrooptical conversion during the amplification process. This work involves simulation of coarse wavelength division multiplexing cwdm transceiver for endtoend based on the effect of extinction ratio and with the use of edfa. Simulation results of the edfa characteristics such as amplified spontaneous emission, gain. Rp fiber power is a powerful modeling software for designing and optimizing fiber devices in particular, fiber amplifiers and lasers as well as other types of waveguide lasers, but also fiber couplers, multicore fibers, helical core fibers and tapered fibers the software offers both efficient power propagation and full. Analyzing gain spectrum and ase amplified spontaneous. Gain flatness and noise figure optimization of cband edfa. Analyzing gain spectrum and ase amplified spontaneous emission of edfa erbium doped fiber amplifier by using matlab written by padavala alekhya, komaravalli byula grace, narisetty sukshitha published on 20180227 download full.
Cad based software for lighting simulation with nonsequential ray trace capability. Free and open source circuit simulator software list. Thasleen banu5 department of electronics and communication engineering, k. Simulation results of the edfa characteristics such as. Optimizing the edfa gain for wdm lightwave systems in this tutorial, we provide an example of the gain flatness optimization type. The parameters used in this simulation are displayed at figure 1 and they are similar to the values presented in table 1 1, except for the values of the absorption and emission cross sections. 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. After comparing advantages and disadvantages between optisystem and matlab, optisystem software was selected to be used in designing edfa in wdm system. In the last chapter a simulation is created for the comparisonof berandfactor while evaluating the. Claddingpumped edfas have been identified as a solution for lband amplification.
In 1, the noise performance of these devices is studied for both co and counterpropagating pump schemes. Simulation of analytical model of erbium doped fiber amplifiber edfa cite as sourav mondal 2020. Performance analysis of an optically amplified adddrop. Photonics design software with an emphasis on photometry, optical calculations, and laser simulation. We simulate a fiber amplifier with the following properties. The simulation uses transient simulation mode in optsim. We provide optisystem based projects which enable user to plan, test and simulate optical links in transmission layer of modern optical network for research scholars. I want to implement edfa characteristics in matlab, not simulink.
452 1410 499 705 1474 116 771 813 1286 344 1126 21 542 1457 1031 698 1518 1145 96 556 680 1324 449 801 979 367 690 992 273 656 846 744 1416 807 197 1346 402 1103