Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2006-11-21
2006-11-21
Nguyen, Tu T. (Department: 2877)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
07139069
ABSTRACT:
A multi-stage method and apparatus for determining a faulty component location along an optical path through an optical fiber in an optical network are disclosed. A total power of the optical fiber, and a total wavelength power as a sum of powers of the individual wavelengths at a plurality of local detection points are measured and compared at the local detection points, followed by determining whether or not a faulty detection point exists along the optical path. If a fault is identified, the method provides a multi-stage fault detection procedure, including measuring a total wavelength power loss between a local detection point and an adjacent detection point, between the local detection point and multiple non-adjacent detection points, and a correlation of the measured total wavelength power losses between the various detection points. A corresponding apparatus for determining the faulty component location in the optical network is also provided.
REFERENCES:
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6980287 (2005-12-01), Renard et al.
patent: 7031606 (2006-04-01), Liu et al.
Bacque James Benson
Ng Eddie Kai Ho
Remedios Derrick
Wan Ping Wai
Donnelly Victoria
Nguyen Tu T.
Tropic Networks Inc.
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