Optical integrated circuit comprising a light guide forming...

Details Optical integrated circuit comprising a light guide forming... Optical integrated circuit comprising a light guide forming...

2006-05-24

2009-08-18

Font, Frank G (Department: 2883)

Optical waveguides

Integrated optical circuit

C385S043000, C385S049000, C385S129000, C385S130000

Reexamination Certificate

active

07577322

ABSTRACT:
An optical integrated circuit with waveguide separation on a substrate includes at least one separating unit, including an optical input/output interface in relation with an external light wave guide, the interface extending in the circuit through an optical guiding input section extended by at least two optical guiding branches mutually spaced apart substantially symmetrically relative to the general direction of the input section. The input section includes as many optical guides as branches, adjacent input section optical guides being substantially rectilinear and mutually parallel, two adjacent optical guides of the input section being separated by an aperture of width D, the refractive index of the opening being lower than that of the optical guides, each input section optical guide having a determined width We1, each branch optical guide exhibiting a width increasing in the direction away from the input section from the width We1up to a determined width Ws.

REFERENCES:
patent: 4389567 (1983-06-01), Khoe et al.
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patent: 2002/0038900 (2002-04-01), Yamauchi
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patent: 1318420 (2003-06-01), None
patent: 04355714 (1992-12-01), None
patent: 11352347 (1999-12-01), None
patent: 2000180646 (2000-06-01), None
Vinchant J-F et al., “INP Digital Optical Switch Guided-Wave Photonic Switching”, Oct. 1, 1993, pp. 301-307.

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