Semiconductor device for control of light

Details Semiconductor device for control of light Semiconductor device for control of light

1991-08-07

1992-04-21

James, Andrew J.

357 16, 357 30, 357 45, 357 17, H01L 2712

Patent

active

051073072

ABSTRACT:
A semiconductor optical modulator is provided wherein very thin films of two kinds of semiconductors having different band gaps are laminated alternately to form a multi-quantum well (MQW) structure, also called a super-lattice structure, and current is injected into the MQW structure to change the corresponding optical absorption and refractive index characteristic thereof so that a sufficient on/off ratio can be obtained.

REFERENCES:
patent: 4620214 (1986-10-01), Margalit et al.
patent: 4716449 (1987-12-01), Miller
patent: 4755860 (1988-07-01), Allam
patent: 4819036 (1989-04-01), Kuroda et al.

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