Design of high channel-count optical fiber filters based on sampled Bragg grating with discrete linear chirp structure

被引：0
|
作者：
Tu X.-H. [1 ]
Liu F.-Q. [1 ]
Xu N. [1 ]
机构：
[1] Microfluidics and Optics Technology Research Center, School of Opto-Electronic Engineering, Nanjing University of Posts and Telecommunications
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2010年 / 18卷 / 09期
关键词：
Dense wavelength division multiplexing; Discrete chirp; Optical fiber filter; Sampled Bragg grating; Transmission metrix method;
D O I：
10.3788/OPE.20101809.1965
中图分类号：
学科分类号：
摘要：
A novel approach to obtain multi-channel comb filters with various channel bandwidths is presented based on a sampled Bragg grating. A kind of high-channel-count comb filter with channel spacings of 50 GHz, 100 GHz and 200 GHz is then fabricated respectively by design of a discrete-chirped sampled Bragg grating structure like a ladder in grating period. This kind of optical fiber filter is characterized by multiple equalized bands with flat-top steep-edge and high transmittance and its inter-channel isolation is more than 28 dB, in-band insertion loss is less than 0.1 dB and phase response is between 5~30 ps in the 3 dB bandwidth. By using proposed approach, the holographic phase mask with discrete-chirped coefficients can be easily prepared in low costs and good repetition. Furthermore, by changing the optical fiber parameters, the optical fiber filters with different channel bandwidths can be implemented in high stability and repetition, which has a good potential in the high-speed optical communication systems and optical interconnects.
引用
收藏
页码：1965 / 1971
页数：6
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