Effect of refractive index direct current component modulation on fiber bragg gratings

The relationship of refractive index direct current component modulation function and phase of fiber Bragg grating was deduced using coupled-mode theory, and the effect of refractive index direct current modulation on fiber Bragg gratings was analyzed and the numerical simulation investigation with Transmission Matrix Method was also given. The simulation results agree with those theories reported in literatures. Based on the theoretical analyses, by properly controlling the RIDCC modulation, using the same uniform phase mask can fabricate fiber Bragg gratings with different linear or non-linear group delay characteristics. These gratings can be used for different dispersion compensation and dispersion slope compensation in high-speed optical communication systems.