Optical performance monitoring apparatus for a WDM optical...

Details Optical performance monitoring apparatus for a WDM optical... Optical performance monitoring apparatus for a WDM optical...

2005-08-09

2005-08-09

Chan, Jason (Department: 2633)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S038000

Reexamination Certificate

active

06928243

ABSTRACT:
The optical performance monitoring apparatus includes a first optical distributor for distributing a WDM optical signal branched from an optical transmission line, a plurality of wavelength selectors, each for selecting a predetermined wavelength optical signal from the optical signal distributed, a plurality of first optical detectors, each for detecting power of the predetermined wavelength optical signal for a corresponding one of channels selected by the wavelength selectors; and a signal processor for measuring the power for each channel of the WDM optical signal, a total ASE noise power, and an optical signal-to-noise ratio for each channel from the digital value.

REFERENCES:
patent: 5859716 (1999-01-01), O'Sullivan
patent: 5986782 (1999-11-01), Alexander et al.
patent: 6009220 (1999-12-01), Chan et al.
patent: 6215584 (2001-04-01), Yang et al.
patent: 6219162 (2001-04-01), Barnard et al.
patent: 6304696 (2001-10-01), Patterson et al.

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