Optical transmission device

Details Optical transmission device Optical transmission device

2006-06-20

2006-06-20

Connelly-Cushwa, Michelle (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S032000, C385S146000

Reexamination Certificate

active

07065270

ABSTRACT:
An optical transmission device improved in optical coupling loss between light guides and optical elements and excelling in efficiency of light utilization is provided with light guides having light incidence/emission sections on plural stepped portions, a substrate that fixes the light guides, and light receiving elements and light emitting elements arranged on the substrate to match the light incidence/emission sections of the light guides. The light receiving elements and the light emitting elements are arranged on the substrate by use of optical connectors. Coefficients of linear expansion and the rates of dimensional variation due to water absorption (or alternatively due to water absorption rates) of the light guides and the substrate here are substantially equalized.

REFERENCES:
patent: 6553170 (2003-04-01), Zhong et al.
patent: 6615615 (2003-09-01), Zhong et al.
patent: 6856735 (2005-02-01), Chang et al.
patent: A 2001-4850 (2001-01-01), None

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