Optical waveguides – Planar optical waveguide – Thin film optical waveguide
Patent
1996-04-17
1998-09-29
Ullah, Akm E.
Optical waveguides
Planar optical waveguide
Thin film optical waveguide
G02B 610
Patent
active
058156283
ABSTRACT:
Disclosed is a novel combination of a particular class of semiconductors with a particular waveguide structure, realizing a practically efficient optical semiconductor device. The class of material used is ordered semiconductors, examples of which are GaInP and AlGaInP in which atomic-layer superlattices are formed. These superlattices are demonstrated to be useful with respect to a particular nonlinear mechanism, by combining with a particular waveguide structure known as a quasi-phase matching structure. The device disclosed is particularly useful for being utilized as a light switch and a light-wavelength converter used for ultrafast optical communication.
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NEC Corporation
Ullah Akm E.
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