Periodically chirped sampled fiber Bragg gratings for multichannel comb filters

被引：26
|
作者：
Zou, Xi-Hua [1 ]
Pan, Wei
Luo, Bin
Qin, Zhang-Miao
Wang, Meng-Yao
Zhang, Wei-Li
机构：
[1] SW Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China
[2] Chinese Minist Educ, Key Lab Broadband Opt Fiber Transmission & Commun, Chengdu 610054, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 9-12期
基金：
中国国家自然科学基金;
关键词：
gratings; optical fiber devices; optical filter; wavelength-division multiplexing;
D O I：
10.1109/LPT.2006.877349
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Periodically chirped sampled fiber Bragg gratings (PC-SFBGs) are proposed as multichannel comb filters. A PC-SFBG consists of many chirp periods corresponding to the periodic chirp effect. With the same chirp coefficient released for a linearly chirped SFBG (LC-SFBG), the spectral self-imaging phenomenon is also observed in the PC-SFBG. Compared with a uniform SFBG, the PC-SFBG exhibits a narrower channel spacing and a similar group-delay characteristic in the reflection bands. Meanwhile, the PC-SFBG ensures a more accurate phase-shift condition (or a better tolerance on the chirp coefficient) and higher peak reflectivities than the LC-SFBG.
引用
收藏
页码：1371 / 1373
页数：3
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