Circuit for switching optical paths

Details Circuit for switching optical paths Circuit for switching optical paths

2005-08-23

2005-08-23

Kang, Juliana (Department: 2874)

Optical waveguides

With optical coupler

Switch

C385S024000, C398S104000, C398S165000

Reexamination Certificate

active

06934434

ABSTRACT:
First to sixth optical switches17to22are provided: in event of failure on the part of a third input/output port33, only the first and second optical switches17and18turn ON; in the event of failure on the part of a second input/output port32, only the third and fourth optical switches19and20turn ON; and in the event of failure on the part of a first input/output port31, only the fifth and sixth optical switches21and22turn ON.

REFERENCES:
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patent: 5838477 (1998-11-01), Yamamoto et al.
patent: 6061157 (2000-05-01), Terahara
patent: 6377373 (2002-04-01), Kawazawa et al.
patent: 2002/0057477 (2002-05-01), Rocca et al.
patent: 6-61943 (1994-03-01), None
patent: 6-83141 (1994-10-01), None
patent: 2510589 (1996-04-01), None
patent: 08-293854 (1996-11-01), None
patent: 10-164022 (1998-06-01), None
patent: 10-173598 (1998-06-01), None
patent: WO 9611537 (1996-04-01), None

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