Title

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

Authors

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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