Dispersion compensation with dispersion compensating fibers. Study performance of the fiber bragg grating as a dispersion compensator an optical transmission system using optisystem software ali mahdi hummadi college of electrical and electronic techniques e. Dispersion compensating fiber bragg grating model fbg. With the program optisystem, is simulated the dispersion compensating of a link of optical fiber communication system using dcf and cfbg with different apodizations. In our study, the impact of chromatic dispersion on the wireless signals transported through the fiber link and its mitigation using different dispersion compensation techniques are discussed. Dcf, fiber bragg grating, electronic dispersion compensation and digital filters3. The dispersion parameter of smf is 120 km long and 16 psnm.
Design and simulate a fiber optic system using dispersion compensating fiber to reduce chromatic dispersion. Dispersion compensating fibers dcf in 1980s the idea to use dispersion compensating fiber in order to compensate dispersion was introduced. Analysis of dispersion compensation in wavelength division. Production results are presented for three types of dcf. Since dispersion is inevitable in optical fibers, dispersioncompensating fibers, such as those sold on this page, can be incorporated into optical systems. The results of three dispersion compensation methods are compared in terms of four parameter, which are qfactor, ber, eye height. Pdf simulation study of dispersion compensation in. Sometimes the term chromatic dispersion is used for specificity. Ask rp photonics for finding the most suitable dispersionshifted fiber for your application definition. Comparative performance analysis of dcf and fbg for dispersion compensation in optical fiber communication gobinder singh1 shivinder devra2 karamdeep singh3 1 student 2,3assistant professor 1,2,3. Dispersion compensation in optical fiber communication. Output of fiber is sent to fiber bragg grating which is used to compensate the distortion of signal by inducing dispersion after each stage.
Thorlabs offers dispersion compensating bare fiber for custom solutions across a broad spectral range in the telecom region. Analysis and simulation of dispersion compensation in. Chi,alloptical clock recovery and pulse reshaping using semiconductor optical amplifier and dispersion compensating fiber ring cavityieee photon. Both systems have three different schemes pre, post and symmetrical. In terms of fiber length, it can be noted that the dispersion impact increases as the fiber length increases. The simulations have been carried out using optisystem software version 12. Exercise 4 dispersion compensation design a fiber optic link consisting of a length of transmission fiber followed by a length of dispersioncompensating fiber. Dispersion compensation techniques for optical fiber. Analysis of dispersion compensation using fiber bragg. Design and simulate a fiber optic system using dispersioncompensating fiber to reduce chromatic dispersion. Performance analysis of dispersion compensation in long haul optical fiber with dcf. Comparative performance analysis of dcf and fbg for. Compensation of dispersion with ideal dispersion component.
The iterative loop component consists of an optical fiber, fiber compensating techniques and a preamplifier. Performance analysis of dispersion compensation using fbg in ocs by optisystem software. Project layout for dispersion compensation with fiber bragg grating component in optisystem the following shape was generated in the optical gaussian pulse generator with an initial 12. This example shows a chirped fiber bragg grating fbg used for dispersion compensation, and the beneficial effect of apodisation. There is an assumption for the proposed structure to keep the 1 st mode in a central core over the wide working spectrum of. In order to compensate dispersion, a very high negative dispersion coefficient in a narrow band frequency is. Analysis of wdm system with dispersion compensation schemes. Dcf is the most common method for dispersion compensation in wdm systems. Performance analysis of dispersion compensation in long.
Single mode dispersion compensating fiber aitc group. The network layout is designed and simulated with the help of optisystem 7 software. Picwave is able to model bragg gratings with neararbitrary chirp and apodisation profiles. The main design features of a triplecladding index profile design are examined theoretically and experimentally. Fiber bragg grating as a dispersion compensator in an optical transmission system using optisystem software b. In this paper, dispersion compensating fibers dcf are used to compensate the positive dispersion accumulated over the length of the fiber at 10gbitssec and 250 km of optical fiber. If a transmission fiber of length l tf is connected in series with a dcf of length.
Project layout for dispersion compensation with ideal dispersion component in optisystem the following shape was generated in the optical gaussian pulse generator with an initial 12. Dcf modules inserted into transmission line at regular interval. Dcf3 fiber is a nonzero dispersionshifted fiber nzdsf with negative dispersion and low positive dispersion slope that is optimal for medium distances and wide band wdm systems. Its effective core area is small compared to single mode fiber and have high attenuation coefficient. Theoretical analysis for selective coupling profile for. Gupta journal of engineering science and technology december 2011, vol. Analysis on dispersion compensation with dcf based on.
Rp photonics encyclopedia dispersionshifted fibers. The inherent dispersion and nonlinear impairments in optical fiber communication system can be overcome by using the fiber bragg grating fbg which is a dispersion compensating module. Rp photonics encyclopedia dispersion compensation, pulse. Dcf can minimize the overall dispersion to optimize the system for high bit rate. Fiberbased dispersion compensation is an attractive technology for upgrading wdm communication. You may also load your own data files for any parameter into the component. In this paper, we investigate the transmission of a 100 gbits signal with 0. Analysis on dispersion compensation with dcf based on optisystem. Conventional dispersion compensating fibers have a high negative dispersion 80 psnm. Dispersioncompensating fiber dcf provides an optical medium with a relatively large negative chromatic dispersion factor d. The overall dispersion of these fibers is opposite in sign and much larger in magnitude than that of standard fiber, so they can be used to cancel out or. Fiber bragg grating as a dispersion compensator in an. Due to the nonlinear nature of propagation, system performance depends upon power levels 14 and the position of dispersion compensating fibers 15.
Is also analysed the cfbg the apodized and nonapodized using the program optigrating. Edfa pumping and dispersion compensation using optisystem submitted by sushanta kumar swain in partial fulfillment of the requirements for the award of master of technology degree in electronics and communication engineering with specialization in communication and signal processing during session 20112012 at. You can use the regular fiber components located in the defaultoptical fibers library for any type of fiber as long as you know its parameters. Dispersion compensation was originally proposed to equalize pulse distortion.
Optisystem is a optical fiber communication system simulation. The rp photonics buyers guide contains 20 suppliers for dispersion compensation modules. A monthly journal of computer science and information. This dispersion compensation fiber dcf is designed to compensate the accumulated dispersion in long haul optical fiber transmission systems in the c band. Dual core dispersion compensating fibre with large negative dispersion parameter a concentric core dcf based on microstructured optical fibre is proposed 1. Dispersion compensating fiber is a single mode fiber which have high negative dispersion coefficient of 80 to 90 ps nm. Dispersionmanaged fiberring laser using semiconductor. Set the fiber lengths such that, according to theory, both attenuation and. A simulation approach for dispersion compensation in. The system performance is optimized by using dispersion compensation fiber to compensate for the dispersion produced by single mode fiber. Similar to dsf, except that the zerodispersion wavelength is intentionally placed outside of the 1550 nm window. The best is to search for dcf fiber datasheets and use its parameters in the fiber component in optisystem. Pdf dispersion compensation in optical fiber communication.
Loss and dispersion compensation is provided in fiber optic link. With the development of wavelength division multiplexing wdm techniques for large capacity optical communication systems, dispersion compensation technologies have been applied into the field. Single mode fiber designs such as corning smf28, dispersion flattened or shifted fibers. Dispersion techniques dispersion compensating fibers fiber bragg grating electronic dispersion compensation digital filters optical phase conjugation techniques 7. In this paper, a proposal for analyzing the performance of an optical system by using dispersion compensation fiber dcf and linear chirped apodized fiber bragg grating fbg has been put forth. After which you will run a basic fiber optic system consisting of a transmitter, a fiber and a receiver.
All the results are analyzed using optisystem simulation at 10 giga bits per second gbs transmission systems. Fiber optic dispersion and its effect on optical transmission system are analyzed. Analysis of various loss compensation techniques in a single. Performance analysis of an optical system using dispersion. Dispersion phenomena in optical fibers halina abramczyk. Comparison of different chromatic dispersion compensation. Since dispersion is inevitable in optical fibers, dispersion compensating fibers, such as those sold on this page, can be incorporated into optical systems. Olsson,selfphase modulation and spectral broading of optical pulses in semiconductor laser amplifiersieee j. Dispersion compensating fibers dcf and fiber bragg grating fbg are other techniques which can be used for compensation of dispersion in optical fiber link. Pdf simulation study of dispersion compensation in optical.
Performance analysis of photoelectric dispersion compensation technology based on optisystem j. Department of children and families various us states dcf. Application of optical system simulation software in a. Analysis of spm and fwm in optical fiber communication.
Short pulses in optical fiber are broadened by group velocity dispersion. The most commonly used dispersion compensation fiber dcf technology is studied in this article. The optimal design of a given optical communication system. Analysis of dispersion compensation using fiber bragg grating in optical fiber communication system mehtab singh. Standard single mode fiber or nonzero dispersion shifted fiber has been widely used in long haul systems. Hello, typically, the fiber dispersion, effective area, nonlinear refractive index, attenuation are the main parameters. Calculate the associated nonlinear and dispersion lengths. A tradeoff for dispersion compensating fibers dcfs. Setting up a layout, as in the example below the effects can. Performance analysis of different dispersion compensation.
Dispersion compensation optical fiber modules for 40 gbps. Dispersioncompensating fiber bragg grating simulation with picwave software. Media having this common property may be termed dispersive media. In this exercise, you will download and install optiperformer on your pclaptop. Smf have positive dispersion and dcf have negative dispersion so overall dispersion is zero. The ape femtocontrol is a compact motorized dispersion compensation unit for optimization of the duration of femtosecond laser pulses in the spectral range of ti. In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. We have analyzed the dispersion compensation using fiber bragg grating at. Indeed, in a single mode fiber we can assume with a good approximation that the optical path of the rays is directed along the optical. Dispersionshifted fiber works well in single channel 1550 nm systems, but in dwdm systems, fiber nonlinearities near to the zerodispersion wavelength cause problems.
588 786 730 1308 1622 1119 823 706 39 1288 566 1109 1031 610 979 1583 1433 1543 203 58 1520 737 834 764 651 545 935 1454