Fiber Bragg gratings: Application to dispersion compensation.

摘要

The overall purpose of this study is to show how Fiber Bragg gratings can be used as inbuilt optical fiber communication system components, to serve as pulse compressors for dispersion compensation. Dispersion causes the propagating pulses inside the fiber, to expand in width because different wavelength components of the pulse travel at different group velocities, thus they all reach the receiving end of the fiber at different times.; We propose a scheme for optical pulse compression using an apodized chirped fiber grating inline with the transmission fiber as the nonlinear dispersive element for the first section of the compressor. Near the band edge on the long-wavelength side of the stop band of the grating, the normal quadratic dispersion is orders of magnitude greater than in a standard optical fiber. Therefore the first section of the compressor may be scaled down in length and the constraints placed on these systems may be relaxed. In this paper we discuss the design of such fiber-grating compressors. (Abstract shortened by UMI.)