Optical communications – Diagnostic testing – Fault location
Reexamination Certificate
2005-11-15
2005-11-15
Sedighian, M. R. (Department: 2633)
Optical communications
Diagnostic testing
Fault location
C398S019000, C398S111000, C398S033000, C398S005000, C398S017000
Reexamination Certificate
active
06965735
ABSTRACT:
A method and an apparatus for switching channel connection between multiple optical channels synchronously and automatically. The apparatus employs an optical switch to interface among a plurality of optical channels, and an optical power meter to monitor data transmission over the plurality of optical channels by measuring the optical power level of optical signals over the channel. When signal transmission is detected over a specific optical channel, the optical switch is locked to the specific optical channel allowing data signals over the specific optical channel to be transmitted to a specific device or another optical channel through the optical switch. When no optical signal is detected over the channel, said optical switch will be switched to another optical channel, such that signal monitoring and switching channels among a plurality of optical channels is able to be performed synchronously and automatically.
REFERENCES:
patent: 5710846 (1998-01-01), Wayman et al.
patent: 6243510 (2001-06-01), Rauch
patent: 6421149 (2002-07-01), Tervonen et al.
patent: 6528777 (2003-03-01), Ames et al.
Chi Teng-Yuan
Wu Hsuan-Hung
Wu Ting-Feng
Yang Wen-Pin
Rosenberg , Klein & Lee
Sedighian M. R.
Technology Thesaurus Corp.
Wang Quan-Zhen
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