Abstract

A phase-shift fiber Bragg grating (FBG) with sampling is proposed to generate a multi-channel bandpass filter in the background of multi-channel stopbands. The sampled moire fiber gratings are analyzed by Fourier transform theory first, and then simulation and experiment are performed, the results show that transmission peaks are opened in every reflective channel, the spectrum shape of every channel is identical. It can be used to fabricate multi-wavelength distributed feedback (DFB) fiber laser.

© 2005 Chinese Optics Letters

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