Optical waveguide having a variable refractive index and an opti

Details Optical waveguide having a variable refractive index and an opti Optical waveguide having a variable refractive index and an opti

1992-03-20

1993-01-12

Healy, Brian

Optical waveguides

Planar optical waveguide

Thin film optical waveguide

385 14, 385132, 372 7, 372 44, 372 45, 372 46, 257 9, 257 12, 257 13, G02B 610, H01S 330, H0lL 2712

Patent

active

051796155

ABSTRACT:
A semiconductor optical waveguide comprises a substrate of a semiconductor material doped to a first conductivity type, a multiple quantum well layer provided on the substrate for guiding an optical beam, a clad layer doped to a second conductivity type and provided on the multiple quantum well layer for confining the optical beam, a first electrode provided on the upper major surface of the clad layer for injecting carriers of a first type into the quantum well layer, and a second electrode provided on the lower major surface of the substrate for injecting carriers of a second type into the quantum well layer, wherein multiple quantum well layer comprises an alternate stacking of: a quantum well layer having a composition set to provide a smallest band gap that is possible under a constraint that the quantum well layer maintains a lattice constant with the substrate and a thickness set with respect to the optical energy of the optical beam such that a discrete quantum level of carriers is formed in the quantum well layer at an energy level larger than the optical energy by about 50 meV; and a barrier layer having a band gap substantially larger than the band gap of the quantum well layer.

REFERENCES:
patent: 4746181 (1988-05-01), Hayakawa et al.
patent: 4752934 (1988-06-01), Fukuzawa et al.
patent: 4755015 (1988-07-01), Uno et al.
patent: 4794611 (1988-12-01), Hara et al.
patent: 4840446 (1989-06-01), Nakamura et al.
patent: 5091756 (1992-02-01), Iga et al.
patent: 5105240 (1992-04-01), Omura
patent: 5107306 (1992-04-01), Blood et al.
patent: 5107514 (1992-04-01), Goto
patent: 5111255 (1992-05-01), Kiely et al.
patent: 5124996 (1992-06-01), Ikeda

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