Abstract
On the basis of the arrayed waveguide grating (AWG) and the optical fiber grating, a novel kind of dispersion compensation used for fiber communication is presented in this paper. First, a dispersion equation of a uniform fiber grating in the vicinity of its reflection band gap is deduced using the mode-coupled theory. Then, a dispersion compensation of a wavelength division multiplexing (WDM) system is analyzed using the AWG and the uniform fiber grating. Finally, the results of dispersion compensation for an 8-channel WDM system are calculated and discussed. It results in that this method can compensate the dispersion of every channel of the WDM system respectively, and make the compensation efficiency maximum theoretically.
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