Chromatic dispersion and polarization-mode dispersion monitoring for RZ-DPSK signals based on asynchronous amplitude-histogram evaluation

    Authors

    Z. H. Li;G. F. Li

    Comments

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    Abbreviated Journal Title

    J. Lightwave Technol.

    Keywords

    asynchronous sampling; differential phase-shift keying (DPSK); optical; performance monitoring; polarization-mode dispersion (PMD); SIDE-BAND; COMPENSATION; FIBER; TRANSMISSION; SYSTEMS; Engineering, Electrical & Electronic; Optics; Telecommunications

    Abstract

    The authors demonstrate in-service channel monitoring of a chromatic dispersion (CD) and polarization-mode dispersion (PMD) for a return-to-zero differential phase-shift keying (RZ-DPSK) signals based on the asynchronous amplitude-histogram evaluation (AAHE) technique. The waveform evolution of the RZ-DPSK signal under the effects of the CD and PMD is investigated analytically and numerically. The CD leads to a power level splitting at the valley of the waveform before demodulation. The intensities of these two levels further increase due to the PMD. By tracking the intensities of these levels using the AAHE method, the CD and PMD can be measured. The principle of a simultaneous monitoring of the CD and PMD is demonstrated experimentally for 10-Gb/s RZ-DPSK signals. The effects of the signal's optical signal-to-noise ratio and the number of the sampling points on the accuracy of the monitoring results are also presented.

    Journal Title

    Journal of Lightwave Technology

    Volume

    24

    Issue/Number

    7

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    2859

    Last Page

    2866

    WOS Identifier

    WOS:000238897200038

    ISSN

    0733-8724

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