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US 5,475,704 AGranted
Optical processor with booster output
AssigneeSamsung Electronics Co., Ltd.
InventorSvyatoslav A. Lomashevich
Life of this patent
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Abstract
A nonlinear optical device, operating in an optical bistability mode, capable of carrying out amplification, commutation, switching and computing of optical signals, comprises, a pair of directional couplers formed by optically coupling a pair of waveguides and a pair of nonlinear circular resonators and an optical transistor incorporating an optical mixer of bifurcation optical active type capable of functioning also as a phase modulator.
Claims20
An optical processor, including:
- a pair of first waveguides;
- a pair of first directional couplers;
- a second waveguide;
- a pair of second directional couplers;
- a pair of nonlinear ring resonators optically coupled to respective ones of said first waveguides through respective ones of said first directional couplers, each of said first directional couplers being provided with means for adjusting the optical coupling between a respective one of said nonlinear ring resonators and a respective one of said first waveguides, each of said nonlinear ring resonators further being optically coupled to said second waveguide through said second directional couplers, and each of said second directional couplers being provided with means for adjusting the optical coupling between a respective one of said nonlinear ring resonators and said second waveguide;
- wherein each of said first waveguides are provided with input and output optical contacts;
- wherein each of said nonlinear ring resonators comprises:
- a pair of first lasers positioned at opposite end portions thereof;
- a plurality of first mirrors configured to form resonant cavities for said first lasers;
- and,
- first means for controlling said first lasers and selected portions of each of said nonlinear ring resonators intermediate said first lasers and said first directional couplers;
- and,
- wherein said second waveguide comprises:
- a pair of second lasers positioned at opposite end portions of said second waveguide;
- a plurality of second mirrors configured to form resonant cavities for said second lasers;
- a phase modulator provided between said pair of second lasers and said pair of second directional couplers, said phase modulator being bounded by a plurality of third mirrors and serving as a Febry-Perot interferometer;
- second means for controlling said second lasers and said phase modulator;
- and,
- wherein an input optical signal introduced into a selected one of said first waveguides is coupled to a respective one of said nonlinear ring resonators via a respective one of said first directional couplers, and amplified, under the control of a switching signal applied to a respective one of said adjusting means, said amplified input optical signal initiating operation of said phase modulator and lasing of said second lasers.
16 more elements
An optical processor, including:
- a first waveguide;
- a first directional coupler;
- a second waveguide;
- a second directional coupler;
- a nonlinear ring resonator optically coupled to said first waveguide through said first directional coupler, said first directional coupler being provided with means for adjusting the optical coupling between said nonlinear ring resonator end said first waveguide, said nonlinear ring resonator further being optically coupled to said second waveguide through said second directional coupler, and said second directional coupler being provided with means for adjusting the optical coupling between said nonlinear ring resonator and said second waveguide;
- wherein said first waveguide is provided with input and output optical contacts;
- wherein said nonlinear ring resonator comprises:
- a pair of first lasers positioned at opposite end portions of said nonlinear ring resonator;
- a plurality of first mirrors configured to form resonant cavities for said first lasers;
- and,
- first means for controlling said first lasers end selected portions of said nonlinear ring resonator intermediate said first lasers end said first directional coupler;
- and,
- wherein said second waveguide comprises:
- a pair of second lasers positioned at opposite end portions of said second waveguide;
- a plurality of second mirrors configured to form resonant cavities for said second lasers;
- a phase modulator provided between said pair of second lasers and said second directional coupler, said phase modulator being bounded by a plurality of third mirrors and serving as a Fabry-Perot interferometer;
- second means for controlling said second lasers and said phase modulator;
- and
- wherein an input optical signal introduced into said first waveguide is coupled to a nonlinear ring resonator via said first directional coupler, and amplified, under the control of a switching signal applied to said adjusting means, said amplified input optical signal initiating operation of said phase modulator and lasing of said second lasers.
16 more elements
Dependencies are inferred from the claim text.