Optical device of waveguide type and its production method

Details Optical device of waveguide type and its production method Optical device of waveguide type and its production method

2004-08-30

2008-11-18

Connelly-Cushwa, M. R. (Department: 2874)

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

C385S014000, C385S043000, C385S129000

Reexamination Certificate

active

07454111

ABSTRACT:
Input ports (103a,103b) formed from fundamental mode waveguides are provided at one end of a multimode waveguide (104). Further, an output port (105) formed from a fundamental mode waveguide is provided at the other end of the multimode waveguide (104). The multimode waveguide (104) has a width wider than those of the input ports (103a,103b) and the output port (105), and provides modes including multimode to the waveguide. The multimode waveguide (104) is embedded with a buried layer (200). Both of the end faces of the multimode waveguide (104) are made to be planes equivalent to a (100) plane or planes inclined from these planes. In a case of inclined planes, the planes are made to be planes inclined to a direction that the waveguide region spreads toward a stacked direction of the semiconductor layers.

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