Optical waveguide

Details Optical waveguide Optical waveguide

2006-10-16

2008-11-11

Font, Frank G (Department: 2883)

Optical waveguides

With optical coupler

Particular coupling structure

C385S045000, C385S129000, C385S132000

Reexamination Certificate

active

07450803

ABSTRACT:
The invention is directed to an optical waveguide that reduces an excess loss caused in a curved waveguide region by a deviation of the center axis of a beam propagating mode from the center axis of the optical waveguide. The optical waveguide has its part curved, and assuming that the shortest distance from a certain point of a convex edge of the curved portion to a concave edge is a waveguide width at that point, the optical waveguide has its width progressively reduced from the maximum waveguide width in the midst of the curved portion toward the opposite ends of the curved portion.

REFERENCES:
patent: 2002/0154879 (2002-10-01), Yasuda et al.
patent: 02-234108 (1990-09-01), None
patent: 04-213407 (1992-08-01), None
patent: 07-102088 (1995-04-01), None
patent: 08-036114 (1996-02-01), None
patent: 09-061648 (1997-03-01), None
patent: 2000-121857 (2000-04-01), None
Japanese Official Action for Application No. 2003-092539, issued Jul. 23, 2007.
Francois Ladouceur and Pierre Labeye, “A New General Approach to Optical Waveguide Path Design,” Journal of Lightwave Technology, vol. 13, No. 3, Mar. 1995, p. 481-492.

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