[4] Chen Xiangfei, Luo Yi, Fan Chongcheng, et al. Analytical expression of sampled Bragg gratings with chirp in the sampling period and its application in dispersion management design in a WDM system [J]. IEEE Photon. Technol. Lett., 2000, 12(8): 1013-1015.
[5] Li H, Li M, Sheng Y, et al. Advances in the design and fabrication of high-channel-count fiber Bragg gratings [J]. IEEE J. Lightwave Technol., 2007, 25(9): 2739-2749.
[6] Li S Y, Ngo N Q, Tjin S C, et al. Thermally tunable narrow-band-pass filter based on a linearly chirped fiber Bragg grating [J]. Opt. Lett., 2004, 29(1): 29-31.
[7] Dai Yitang, Chen Xiangfei, Xu Ximing, et al. High channel-count comb filter based on chirped sampled fiber Bragg grating and phase shift [J]. IEEE Photon. Technol. Lett., 2005, 17(5): 1040-1042.
[8] Chen Xiangfei, Fan Chongcheng, Luo Yi, et al. Novel flat multichannel filter based on strongly chirped sampled fiber Bragg grating [J]. IEEE Photon. Technol. Lett., 2000, 12(11): 1501-1503.