Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18775
Title: In-service signal quality monitoring and multi-impairment discrimination based on asynchronous amplitude histogram evaluation for NRZ-DPSK systems
Authors: Li, Z
Lu, C 
Wang, Y
Li, G
Issue Date: 2005
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics technology letters, 2005, v. 17, no. 9, p. 1998-2000 How to cite?
Journal: IEEE photonics technology letters 
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.
URI: http://hdl.handle.net/10397/18775
ISSN: 1041-1135
EISSN: 1941-0174
DOI: 10.1109/LPT.2005.853234
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