Optical communication network apparatus and optical switching ne

Details Optical communication network apparatus and optical switching ne Optical communication network apparatus and optical switching ne

1998-07-07

2000-09-05

Henry, Jon

Optical waveguides

With optical coupler

Plural

385 16, 359128, G02B 628, H04J 1402

Patent

active

061155179

ABSTRACT:
An optical communication network node apparatus including input terminals 111 to 11n, 1:2 optical branch units 121 to 12n, a pass-through optical switching network d101, 2:1 optical connectors 151 to 15n, output terminals 171 to 17n, a drop optical switching network 102, output interfaces 13-1 to 13-mn, input interfaces 14-1 to 14-mn and an insert optical switching network. Accordingly, in the optical communication network node apparatus, various types of optical switching networks are separated from one another and each optical switching network supports only a necessary switching state, so that the number of optical switch elements can be reduced.

REFERENCES:
patent: 5144465 (1992-09-01), Smith
Japanese Office Action issued Oct. 6, 1999 in a related application.
Translation of relevant portions of Oct. 6, 1999 Japanese Office Action.

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