Tunable and switchable all-fiber comb filter using a PBS-based two-stage cascaded Mach-Zehnder interferometer

被引：18
作者：
Luo, Zhi-Chao [1 ]
Luo, Ai-Ping [1 ]
Xu, Wen-Cheng [1 ]
机构：
[1] S China Normal Univ, Key Lab Photon Informat Technol, Guangdong Higher Educ Inst, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2011年 / 284卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Comb filter; Mach-Zehnder interferometer; Channel spacing tunable; Multiwavelength switchable; RING LASER; LOOP MIRROR;
D O I：
10.1016/j.optcom.2011.04.054
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
\We propose and demonstrate a novel tunable and switchable all-fiber comb filter by employing a polarization beam splitter (PBS)-based two-stage cascaded Mach-Zehnder (M-Z) interferometer. The proposed comb filter consists of a rotatable polarizer, a fiber PBS, a non-3-dB coupler and a 3-dB coupler. By simply adjusting the polarization state of the input light, the dual-function of channel spacing tunable and wavelength switchable (interleaving) operations can be efficiently obtained. The theoretical analysis is verified by the experimental results. A comb filter with both the channel spacing tunable from 0.18 nm to 0.36 nm and the wavelength switchable functions is experimentally demonstrated. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：4167 / 4170
页数：4
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