Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – In combination with or also constituting light responsive...
Patent
1993-03-11
1995-07-18
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
In combination with or also constituting light responsive...
257 85, 257 95, 257 98, 257432, 372 50, 372 48, 359566, H01L 3300, H01L 3112, H01L 3116
Patent
active
054344344
ABSTRACT:
A semiconductor optical device including multilayer semiconductor device regions formed on a surface of a semiconductor substrate which act as an optical device respectively, and diffraction gratings formed on a back of the substrate optically coupled with at least one of said regions through the substrate. The regions have a function such as light emitting, light receiving, light amplification or light switching. The regions and gratings can be respectively formed on the surface and the back, monolithicaly, and polishing of the substrate provides a suitable thickness so that the regions and the gratings may be optically coupled with each other. The regions and gratings may be arranged at the optimum positions in the direction parallel to the substrate. Extremely precise alignment of its components and many channels can be easily obtained with compact size.
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Komatsu et al., "Polarization Independent GaAs/AlGaAS Electro-Optic Guided-Wave Directional Coupler Switch Using (111)-Oriented GaAs Substrate," Photonic Switching Topical Meeting, 1991 Technical Digest Series, Mar. 6-8, 1991, Salt Lake City, Utah, pp. 193-194.
Kasahara Kenichi
Kawai Shigeru
Mintel William
NEC Corporation
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