Photonic crystal fiber based Mach-Zehnder interferometer for DPSK signal demodulation

被引：23
|
作者：
Du, Jiangbing [1 ,2 ]
Dai, Yongheng [1 ,2 ]
Lei, Gordon K. P. [1 ,2 ]
Tong, Weijun [3 ]
Shu, Chester [1 ,2 ]
机构：
[1] Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China
[2] Chinese Univ Hong Kong, Adv Photon Res Ctr, Shatin, Hong Kong, Peoples R China
[3] Yangtze Opt Fiber & Cable Co Ltd, Wuhan 430073, Peoples R China
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 08期
关键词：
D O I：
10.1364/OE.18.007917
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate a novel fiber-based in-line DPSK demodulator using an in-fiber Mach-Zehnder interferometer (MZI). The device is fabricated by mismatch splicing of a photonic crystal fiber (PCF) with standard single mode fibers. The spectral characteristics at different PCF lengths are analyzed. The envelope of the interference fringes show a period that is inversely proportional to the PCF length, and is attributed to the periodic coupling between the core mode and the cladding mode. Error free demodulations of 10-Gb/s RZ- and NRZ-DPSK signals have been demonstrated using the in-fiber PCF-MZI demodulator with only 3-m PCF to introduce 91-ps delay. Wideband DPSK demodulation has also been achieved. (C) 2010 Optical Society of America
引用
收藏
页码：7917 / 7922
页数：6
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