Filter module

Details Filter module Filter module

2007-06-12

2007-06-12

Font, Frank G. (Department: 2883)

Optical waveguides

With optical coupler

Input/output coupler

C385S033000, C385S047000, C385S024000

Reexamination Certificate

active

10680886

ABSTRACT:
A filter module is provided for an optical communications system. The filter module includes a lens, three optical fibers, an optical filter, and a mirror. The three optical fibers are arranged on a single side of the lens. The lens includes a first face coated with the optical filter and that faces the mirror. The optical fibers are arranged on a second face of the lens. A cascade of the filter modules are configured to connect and form a multiplexing/demultiplexing unit.

REFERENCES:
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patent: 4474424 (1984-10-01), Wagner
patent: 4521071 (1985-06-01), Bohm
patent: 5799121 (1998-08-01), Duck et al.
patent: 6044187 (2000-03-01), Duck et al.
patent: 6477289 (2002-11-01), Li
patent: 6499886 (2002-12-01), Mizuno et al.
patent: 6717733 (2004-04-01), Sato et al.
patent: 2003/0099430 (2003-05-01), Li et al.
patent: 2004/0047558 (2004-03-01), Yasuda et al.
patent: WO 96/19743 (1996-06-01), None

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