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Chin. Phys. B, 2014, Vol. 23(6): 064214    DOI: 10.1088/1674-1056/23/6/064214
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Phase-locked all-optical differential polarization demodulation

Shi Ji, Li Zheng-Yong, Zhang Ge, Wang Hai-Yang, Wang Yi-Xu, Wu Chong-Qing
Key Laboratory of Luminescence and Optical Information of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
Abstract  A novel scheme of differential polarization demodulation is presented and demonstrated based on a polarized asymmetrical Mach-Zehnder interferometer configuration with polarization control. To enhance the stability of the demodulator, a phase-lock device is designed, and it is composed of a symmetric 3×3 coupler and a feedback circuit. For further establishing a differential polarization-shift keying (DPolSK) transmission system, we successfully carry out the demodulation experiments on 10-Gb/s DPolSK optical signals for the first time. Due to the all-optical structure with phase-lock, our scheme is available to realize the DPolSK optical communication in practical optical fiber systems.
Keywords:  optical communication systems      demodulation      polarization  
Received:  29 September 2013      Revised:  12 November 2013      Published:  15 June 2014
PACS:  42.79.Sz (Optical communication systems, multiplexers, and demultiplexers?)  
  42.25.Ja (Polarization)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274037 and 61275075), the Program for New Century Excellent Talents in University, Ministry of Education of China (Grant No. NCET-12-0765), and the Foundation for the Author of National Excellent Doctoral Dissertation, China (Grant No. 201236).
Corresponding Authors:  Li Zheng-Yong     E-mail:  zhyli@bjtu.edu.cn

Cite this article: 

Shi Ji, Li Zheng-Yong, Zhang Ge, Wang Hai-Yang, Wang Yi-Xu, Wu Chong-Qing Phase-locked all-optical differential polarization demodulation 2014 Chin. Phys. B 23 064214

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