Signed chromatic dispersion monitoring of lOOGbit/s CS-RZ DQPSK signal by evaluating the asymmetry ratio of delay tap sampling

Zhaohui Li, Zhao Jian, Linghao Cheng, Yanfu Yang, Chao Lu, Pak Tao Lau, Changyuan Yu, Hwa Yaw Tam, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


In this paper, we theoretically and experimentally demonstrated the residual chromatic dispersion (CD) monitoring of 100-Gbit/s carrier suppress return-to-zero differential quadrature phase shift keying (CS-RZ DQPSK) signals by evaluating the asymmetry ratio of delay tap asynchronous sampling. This scheme can easily differentiate the positive and negative residual CD of the fiber link. The resolution of this scheme is better than 8ps/nm and the measurable range is around ± 24ps/nm for 100Gbit/s CS-RZ DQPSK signals. We can also simultaneously realize both signed CD monitoring and demodulation of CS-RZ DQPSK signal based on only one demodulator.
Original languageEnglish
Pages (from-to)3149-3157
Number of pages9
JournalOptics Express
Issue number3
Publication statusPublished - 1 Feb 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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