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Title:
VERIFICATION OF PATH INTEGRITY IN OPTICAL SWITCH NETWORK
Document Type and Number:
WIPO Patent Application WO2003058290
Kind Code:
A3
Abstract:
To verify the integrity of optical paths through and among optical switches (410), optical signals are provided with co-propagating supplemental signals. The supplemental signals preferably have at least one characteristic which allows distinguishing one supplemental signal from another. Associated with a port (414) of a switch (410), means (402) are provided for detecting a supplemental signal and determining if the supplemental signal indicates that a desired optical signal is passing through the port as expected and desired. Means (620, 720) for imparting or changing the distinguishing characteristic of a supplemental signal may also be employed to facilitate verifying the passage of optical signals.

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Inventors:
FEE JOHN A
MCKIEL FRANK A JR
Application Number:
PCT/US2003/000058
Publication Date:
November 06, 2003
Filing Date:
January 02, 2003
Export Citation:
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Assignee:
WORLDCOM INC (US)
International Classes:
H04Q11/00; (IPC1-7): H04B10/08
Foreign References:
US6108113A2000-08-22
US6005694A1999-12-21
US5867289A1999-02-02
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