Numerical investigation of a stress-gradient sampled Bragg grating for dispersion compensation applications in wavelength-division multiplexing systems

摘要

In this paper, stress-gradient sampled Bragg grating (SBG) has been studied for the first time. The stress gradient can produce both chirps in the grating period and the sampling period. The group delay of the stress-gradient SBG is different from that of the normal chirped SBG. Based on direct calculations, it shows that stress-gradient chirped SBG can compensate for fiber dispersion and dispersion slope simultaneously in wavelength-division multiplexing systems.