共 14 条
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
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.
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页码:4167 / 4170
页数:4
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