Study on 8DPSK of multi-phase modulation technology based on CSRZ  

作　　者：张霞 许恒迎 牛慧娟 张民 王芳 白成林 张晓光 

机构地区：[1]School of Physics Science and Information Engineering, Liaocheng University [2]Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education, School of Science, Beijing University of Posts and Telecommunications [3]School of Computer Science, Liaocheng University

出　　处：《Optoelectronics Letters》2011年第2期151-153,共3页光电子快报（英文版）

摘　　要：A new modulation format in optical fiber communication system, the eight differential phase shift keying (8DPSK) of multi-phase modulation technology based on carrier-suppressed return-to-zero (CSRZ) is proposed in this paper. The formulae of CSRZ-8DPSK modem methods are derived theoretically and the methods are demonstrated. Spectra based on CSRZ and CSRZ-8DPSK modulation methods and their eye diagrams by simulation with MATLAB are obtained. The results show that the CSRZ-8DPSK modulation methods have narrower spectra with higher efficiency. The performance of eye diagrams is also much satisfactory after demodulation, suggesting some possible applications of the methods in the next generation of optical fiber communications.

关 键 词：Communication systems MODULATION Optical communication Optical fibers 

分 类 号：TN929.11[电子电信—通信与信息系统] TN915[电子电信—信息与通信工程]