Optical waveguide

Details Optical waveguide Optical waveguide

2007-05-22

2007-05-22

Font, Frank G. (Department: 2883)

Optical waveguides

Planar optical waveguide

C385S014000, C385S039000, C385S043000, C385S028000, C385S050000, C385S130000, C385S132000

Reexamination Certificate

active

10510746

ABSTRACT:
A waveguide, which is part of an integrated optical circuit is arranged onto a planar substrate, and has a core section propagating light to a direction of propagation. The waveguide is a conversion waveguide between a ridge-type waveguide and a strip waveguide. In the conversion waveguide, the core section is made of the one and same material so that the cross-section of the core section transverse to the direction of propagation of light is two-step from both edges. The conversion waveguide has two layers of different widths so that the height of the first layer is equal to the height of the ridge of the ridge-type waveguide, and the height of the second layer is equal to the height of the base part of the ridge-type waveguide.

REFERENCES:
patent: 4999686 (1991-03-01), Autier et al.
patent: 5078516 (1992-01-01), Kapon et al.
patent: 6571039 (2003-05-01), Al-hemyari et al.
patent: WO 98/35250 (1998-08-01), None
patent: WO 01/27670 (2001-04-01), None

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