Optical communications – Diagnostic testing – Fault location
Reexamination Certificate
2007-10-18
2011-12-13
Bello, Agustin (Department: 2613)
Optical communications
Diagnostic testing
Fault location
C398S010000, C398S013000, C398S016000, C398S017000
Reexamination Certificate
active
08078052
ABSTRACT:
In an optical network a 1+1 bidirectional protection system is presented. Each node across a link has photodiodes to monitor the power of signals received by the node on receiving working and protection optical fibers and also optical switches connected to transmission working and protection optical fibers to modulate signals to its counterpart node across the link. When a node detects a fault in the receiving working optical fiber, not only does the node switch to the receiving protection optical fiber, but it also switches to the transmission protection optical fiber to signal the fault to the node across the link. The optical switches on transmission working and protection optical fibers allow the two nodes across the link to signal each other at a protocol-less or primary protocol level for the link to revert back to its initial state.
REFERENCES:
patent: 5559622 (1996-09-01), Huber et al.
patent: 5615033 (1997-03-01), Yoshida et al.
patent: 5712847 (1998-01-01), Hata
patent: 5875048 (1999-02-01), Nemecek et al.
patent: 6038211 (2000-03-01), Lemaire
patent: 6115154 (2000-09-01), Antoniades et al.
patent: 6137603 (2000-10-01), Henmi
patent: 6266168 (2001-07-01), Denkin et al.
patent: 6614753 (2003-09-01), Ikawa
patent: 6731879 (2004-05-01), Frisch et al.
patent: 6898376 (2005-05-01), Gerstel et al.
patent: 7046928 (2006-05-01), Bradford et al.
patent: 7174096 (2007-02-01), Berthold et al.
patent: 7391971 (2008-06-01), McCloskey et al.
patent: 7409154 (2008-08-01), Wellen
patent: 7430373 (2008-09-01), Yamashita
patent: 7561799 (2009-07-01), Togawa et al.
patent: 7729613 (2010-06-01), Lauder
patent: 2007/0065149 (2007-03-01), Stevens et al.
patent: 2007/0140688 (2007-06-01), Patel et al.
Aprile Aldo
Viscardi Valerio
Bello Agustin
Cisco Technology Inc.
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