In-service signal quality monitoring and multi-impairment discrimination based on asynchronous amplitude histogram evaluation for NRZ-DPSK systems

    Authors

    Z. H. Li; C. Lu; Y. X. Wang;G. F. Li

    Comments

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    Abbreviated Journal Title

    IEEE Photonics Technol. Lett.

    Keywords

    asynchronous sampling; optical performance monitoring; Q-factor; estimation; GROUP-VELOCITY DISPERSION; PM-AM CONVERSION; Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    A novel in-service signal quality monitoring technique for nonreturn-to-zero differential phase-shift keying signals using asynchronous amplitude histogram evaluation has been demonstrated. As a result of phase-to-amplitude modulation, there are three Gaussian distributions in the amplitude histogram. The widths of the Gaussian distributions are related to the amount of amplified spontaneous emission, while the separations between the Gaussian distributions increase monotonically with fiber dispersion. The amount of dispersion and optical signal-to-noise ratio can, thus, be directly extracted and discriminated from the amplitude histogram.

    Journal Title

    Ieee Photonics Technology Letters

    Volume

    17

    Issue/Number

    9

    Publication Date

    1-1-2005

    Document Type

    Article

    Language

    English

    First Page

    1998

    Last Page

    2000

    WOS Identifier

    WOS:000231453500079

    ISSN

    1041-1135

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