Semiconductive guided-wave programmable optical delay lines usin

Details Semiconductive guided-wave programmable optical delay lines usin Semiconductive guided-wave programmable optical delay lines usin

1991-06-27

1992-08-18

Lee, John D.

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

359140, 359173, 359179, 359260, 385 27, 385 39, G02F 1015

Patent

active

051406519

ABSTRACT:
Electrically controlled Fabry-Perot resonator elements are created in a semiconductor channel waveguide by etching two in-channel mirror facets (slots) and by positioning the resulting resonator core in the midregion of a P-I-N diode or field-effect transistor. A large number of FPs can be built monolithically on one semiconductor chip, with FPs connected by on-chip passive waveguides used for multiple on-chip time delays. The low-loss chips are coupled efficiently in end-fire fashion to a group of optical fibers that comprise the optical signal processing system. III-V quantum-well, superlattice, and n-i-p-i materials are preferred for the semiconductor devices, and a variety of electrooptical effects are available for use, including the quantum-confined Stark effect, phase-space absorption quenching, Wannier-Stark effect, plasma dispersion effect, and band-flattening.

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patent: 5023947 (1991-06-01), Cimini, Jr. et al.

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