| Summary: | 碩士 === 義守大學 === 電機工程學系碩士班 === 96 === In this paper, we analyze the phase dependent fiber Bragg gratings and the phase-shift fiber Bragg gratings. Base on the couple mode theory（CMT）,we derived coupled mode equations to obtain the output power for phase dependent fiber Bragg gratings. Also, we use transfer matrix to obtain the transmission and reflection efficiencies of phase-shift and z-shift structures of phase-shift fiber Bragg gratings. For phase dependent fiber Bragg gratings, we discuss the effect of phase differences for two input signals. As shown in the result, the output signals vary with different phases. For phase-shift fiber Bragg gratings, the dc index change of grating structure changes the destructive interference resonant wavelength, the maximum reflection, and the 3dB bandwidth of the spectrum.
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