Optical communications – Diagnostic testing – Fault location
Reexamination Certificate
2006-04-18
2006-04-18
Chan, Jason (Department: 2633)
Optical communications
Diagnostic testing
Fault location
C398S014000, C398S020000, C398S023000, C398S032000, C398S033000, C398S034000, C398S037000, C398S038000, C398S079000
Reexamination Certificate
active
07031606
ABSTRACT:
The invention describes methods and systems for monitoring the performance of an optical network by introducing a fiber identification (FID) tag and/or bundle identification (BID) tag which are unique to the fiber section and to the bundle of fibers respectively. The FID tag is introduced by marking an optical signal, traveling through a section of fiber, with a low frequency dither tone whose frequency is unique to the fiber section. Similarly, the BID tag is introduced by marking an optical signal, traveling through a section of fiber in a bundle of fibers, with another low frequency dither tone whose frequency is unique to the bundle section. Detecting of the FID and BID tones either alone or along with an optionally introduced channel identification (CID) tone is provided.
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Liu Wen
Oprea Dan
Vethanayagam Niranjan
Chan Jason
Donnelly Victoria
Kim David S.
Tropic Networks Inc.
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