Theoretical Discussion of Couple-Mode Using Chirped Fiber Grating for Dispersion Compensation

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Theoretical Discussion of Couple Mode Using Chirped Fiber Grating for Dispersion Compensation

In the high rate optical communication system, the loss and dispersion are important factors which affect the distance and volume of optical communication seriously. With successful researching and applications of EDFA in the system, the loss has not been the most important factor affecting the quality of communication, but the dispersion is now still an important factor which will cause the optical pulse broad. Now the best way to compensate the dispersion of optical communication is using the linearly chirped fiber gratings. In this paper, the couple mode equation of chirped fiber grating to compensate the dispersion is offered and discussed, meanwhile, the problem of the transmitting and reflecting rate is a sitting function. The dispersive coefficient and coupled coefficient of compensator using chirped fiber gratings are also further studied.