Sheet light guide and communication system using the same

Optical waveguides – Planar optical waveguide

Reexamination Certificate

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C385S121000, C385S131000

Reexamination Certificate

active

11044078

ABSTRACT:
In a communication system using a sheet light guide100which is formed by containing light-scattering particles in a sheet optical medium and propagates signal light incident from one end surface100ato the other end surface100aside while scattering the signal light by the particles, and using a plurality of optical fibers21, 22, 23and24or31, 32, 33and34coupled to the other end surface100ain a state of being provided in parallel, each of the end surfaces100aof the sheet light guide100is adapted to have an outer edge shape in which at least a part substantially coincides with an outer edge shape of the plurality of optical fibers21to24or31to34.

REFERENCES:
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patent: 5548670 (1996-08-01), Koike
patent: 5580932 (1996-12-01), Koike
patent: 5822475 (1998-10-01), Hirota et al.
patent: 6169836 (2001-01-01), Sugiyama et al.
patent: 6385371 (2002-05-01), Li
patent: 6714711 (2004-03-01), Lieberman et al.
patent: 2004/0071422 (2004-04-01), Aylward et al.
patent: 2005/0100282 (2005-05-01), Okada et al.
patent: 1 213 594 (2002-06-01), None
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patent: 1 443 348 (2004-08-01), None
patent: 11-31035 (1999-02-01), None
“High-Uniformity Star Coupler Using Diffused Light Transmission” IEICE Trans. Electron, vol. E84C, No. 3 Mar. 2001 p. 339.
Japanese Abstract No. 59091411, dated May 26, 1984.
Japanese Abstract No. 11031035, dated Feb. 2, 1999.
Japanese Abstract No. 2003114353, dated Apr. 18, 2003.

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