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Spectral characteristics of multiple and cascaded phase-shifted fiber Bragg grating (FBG) are analyzed based on the coupled-mode theory with the transfer matrix method. It shows that multi-wavelength output (or comb filters) can be obtained by increasing the number of the phase shifts. The peak wavelength of the transmission band of the cascaded phase-shifted FBG will move towards long wavelength...
Reflective spectral of multiple and cascaded phase-shifted fiber Bragg grating are analyzed based on the coupled-mode theory with the transfer matrix method. For n cascaded phase-shifted FBGs, there are n-1 transmission wavelength output.
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