Subband spectrum analysis for optical multiplex section...

Optical communications – Diagnostic testing – Fault detection

Reexamination Certificate

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Details

C398S010000, C398S011000, C398S013000, C398S017000, C398S028000

Reexamination Certificate

active

10261979

ABSTRACT:
The spectrum of a received WDM band or subband is analyzed to detect failure of, e.g., fiber or amplifiers along a line. In one implementation, measurements are taken within the optical spectrum at locations of expected data-carrying optical signals and at two locations just outside the wavelength range occupied by these signals. Magnitudes of adjacent measurements are compared to obtain differences. If none of the differences exceed a threshold, a fault may be determined.

REFERENCES:
patent: 5712716 (1998-01-01), Vanoli et al.
patent: 5808762 (1998-09-01), Vanoli et al.
patent: 5907420 (1999-05-01), Chraplyvy et al.
patent: 5943147 (1999-08-01), Vanoli et al.
patent: 5969834 (1999-10-01), Farber et al.
patent: 6011623 (2000-01-01), MacDonald et al.
patent: 6025941 (2000-02-01), Srivastava et al.
patent: 6075629 (2000-06-01), Al-Salameh et al.
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6229631 (2001-05-01), Sato et al.
patent: 6266168 (2001-07-01), Denkin et al.
patent: 6654561 (2003-11-01), Terahara et al.
patent: 6873795 (2005-03-01), Sugaya
patent: 6907197 (2005-06-01), Heath et al.
patent: 6952529 (2005-10-01), Mittal
patent: 2001/0024540 (2001-09-01), Ibujuro et al.
patent: 2001/0038473 (2001-11-01), Li et al.
patent: 2002/0018616 (2002-02-01), Li
patent: 2002/0080440 (2002-06-01), Li et al.
patent: 2002/0154353 (2002-10-01), Heath et al.
patent: 2002/0171889 (2002-11-01), Takeuchi et al.
patent: 2003/0025956 (2003-02-01), Li et al.
patent: WO 02/51043 (2002-06-01), None
D. Richards et al., “Detecting Fiber Cuts in a WDM Ring With Optical Protection Switching: Simulation and Experiment”, ECOC '98, Sep. 20-24, 1998, Madrid Spain.

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