Light modulator including waveguide with alternating semiconduct

Details Light modulator including waveguide with alternating semiconduct Light modulator including waveguide with alternating semiconduct

1988-07-26

1989-07-04

Sikes, William L.

350 9612, 350 9613, 357 19, 357 30, G02B 610, H01L 3112

Patent

active

048445720

ABSTRACT:
A semiconductor light modulator is disclosed. The light modulator comprises a semiconductor body and a waveguide for guiding light rays formed in the body. The waveguide comprises waveguide sections of first and second types formed alternately in a series. Each waveguide section of the first type is delimited at least in part by a depletion zone. A voltage U may be applied for controlling the size of the depletion zone delimiting the sections of the first type to vary the ability of the sections of the first type to guide light. Illustratively, when the voltage U is near zero, the light confining characteristics of the sections of the first and second type are substantially identical, so that light rays are guided along the waveguide from one section to another. When the voltage U is increased so as to increase the size of the depletion zones delimiting the waveguide sections of the first type, then there are losses within the waveguide sections of the first type and at the interfaces between the waveguide sections of the first and second type. Thus, the voltage U may be applied to selectively modulate the intensity of light propagating in the waveguide.

REFERENCES:
patent: 3724926 (1973-04-01), Lee
patent: 3795433 (1974-03-01), Channin
patent: 3827000 (1974-07-01), Matsushita et al.
patent: 3976358 (1976-08-01), Thompson
patent: 4003632 (1977-01-01), Komiya et al.
patent: 4166669 (1979-09-01), Leonberger et al.
patent: 4211467 (1980-07-01), Cross et al.
patent: 4359260 (1982-11-01), Reinhart et al.
patent: 4518219 (1985-05-01), Leonberger et al.
patent: 4521069 (1985-06-01), Ikeda
patent: 4675518 (1987-06-01), Oimura et al.
patent: 4685763 (1987-08-01), Tada et al.
patent: 4691983 (1987-09-01), Kobayashi et al.
patent: 4706103 (1987-11-01), Ranganath
patent: 4714312 (1987-12-01), Thaniyavarn
patent: 4737003 (1988-04-01), Matsumura et al.
patent: 4746183 (1988-05-01), Soref et al.
patent: 4778234 (1988-10-01), Papuchon et al.
patent: 4787691 (1988-11-01), Lorenzo et al.
Tien et al., "Building the Integrated Optical Circuit" Optical Spectra 6/81 vol. 15, No. 6, pp. 50-58.
Carenco et al., "GaAS homojunction rib wavegude . . . " J. Appl Phys vol. 51, No. 3, 3/80, pp. 1325-1327.

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