Optical external modulation semiconductor element

Details Optical external modulation semiconductor element Optical external modulation semiconductor element

1985-05-30

1988-05-10

Lee, John

Coherent light generators

Particular component circuitry

Optical pumping

350 9613, 350 9614, 372 96, G02B 634, H01S 319

Patent

active

047430877

ABSTRACT:
An optical modulation element is disclosed in which a diffraction grating is formed along a waveguide for guiding unmodulated incident light and inclined to the direction of travel of the light, and a structure is provided for changing the refractive index of the waveguide portion where the diffraction grating is formed. the refractive index of the waveguide portion can be effected by voltage application, by current injection or by light irradiation.

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patent: 4039249 (1977-08-01), Kaminow et al.
patent: 4273445 (1981-06-01), Thompson et al.
patent: 4286838 (1981-09-01), Huignard et al.
patent: 4327340 (1982-04-01), Coldren
patent: 4622674 (1986-11-01), Mito

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