US4767197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear optical matrix manipulation
Assignee: Boeing North American Inc
•
Filing: 1987-06-25
•
Granted: 1988-08-30
•
Expires: 2007-06-25
Abstract
Abstract A nonlinear optical matrix multiplier includes a nonlinear optical medium with a first optical input beam impinging on the medium, the transverse spatial intensity of the first input beam being modulated by a first two dimensional matrix. A second optical input beam impinges on the medium, with the transverse spatial intensity of the second input beam being modulated by a second two dimensional matrix. An optical probe beam impinges on the medium, the first input beam, the second input beam, and the probe beam being oriented with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing. A diffracted output beam emerges from the medium, with the transverse spatial intensity of the output beam modulated by the product of the first and second matrices.
Inventors
- 👤 Pochi A. Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:45
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
139 words
A nonlinear optical matrix multiplier, comprising: a nonlinear optical medium; a first optical input beam impinging on the medium, the transverse spatial intensity of the first input beam being modulated by a first two dimensional matrix; a second optical input beam impinging on the medium, the transverse spatial intensity of the second input beam being modulated by a second two dimensional matrix; and an optical probe beam impinging on the medium, the first input beam, the second input beam, and the probe beam being oriented with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices.
Claim 2
Dependent Claim
139 words
A nonlinear optical matrix multiplier, comprising: a nonlinear optical medium; a first optical input beam impinging on the medium, the transverse spatial intensity of the first input beam being modulated by a first two dimensional matrix; a second optical input beam impinging on the medium, the transverse spatial intensity of the second input beam being modulated by a second two dimensional matrix; and an optical probe beam impinging on the medium, the first input beam, the second input beam, and the probe beam being oriented with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices.
Claim 3
Dependent Claim
17 words
The multiplier of claim 1, wherein the second input beam is orthogonal to the first input beam.
Claim 4
Dependent Claim
15 words
The multiplier of claim 1, wherein the probe beam further comprises a uniform plane wave.
Claim 5
Dependent Claim
15 words
The multiplier of claim 1, wherein the second two dimensional matrix further comprises a vector.
Claim 6
Dependent Claim
17 words
The multiplier of claim 4, wherein the vector is counterpropagating with respect to the first input beam.
Claim 7
Dependent Claim
23 words
The multiplier of claim 4, further comprising a cylindrical lens for fanning the vector out into a two dimensional matrix of identical rows.
Claim 8
Dependent Claim
20 words
The multiplier of claim 6, further comprising a second cylindrical lens for summing the output beam over one transverse dimension.
Claim 9
Dependent Claim
15 words
The multiplier of claim 1, wherein the nonlinear optical medium further comprises a photorefractive crystal.
Claim 10
Dependent Claim
15 words
The multiplier of claim 1, wherein the nonlinear optical medium further comprises a Kerr medium.
Claim 11
Independent Claim
137 words
A method of nonlinear optical matrix multiplication, comprising the steps of: providing a nonlinear optical medium; modulating the transverse spatial intensity of a first optical input beam with a first two dimensional matrix; directing the first beam into the medium; modulating the transverse spatial intensity of a second optical input beam with a second two dimensional matrix; directing the second beam into the medium; directing an optical probe beam into the medium; orienting the first beam, the second beam, and the probe beam with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices.
Claim 12
Independent Claim
137 words
A method of nonlinear optical matrix multiplication, comprising the steps of: providing a nonlinear optical medium; modulating the transverse spatial intensity of a first optical input beam with a first two dimensional matrix; directing the first beam into the medium; modulating the transverse spatial intensity of a second optical input beam with a second two dimensional matrix; directing the second beam into the medium; directing an optical probe beam into the medium; orienting the first beam, the second beam, and the probe beam with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices.
Claim 13
Dependent Claim
17 words
The method of claim 10, wherein the second input beam is orthogonal to the first input beam.
Claim 14
Dependent Claim
15 words
The method of claim 10, wherein the probe beam further comprises a uniform plane wave.
Claim 15
Dependent Claim
15 words
The method of claim 10, wherein the second two dimensional matrix further comprises a vector.
Claim 16
Dependent Claim
18 words
The method of claim 13, wherein the vector is made counterpropagating with respect to the first input beam.
Claim 17
Dependent Claim
22 words
The method of claim 13, further comprising the step of fanning the vector out into a two dimensional matrix of identical rows.
Claim 18
Dependent Claim
18 words
The method of claim 15, further comprising the step of summing the output beam over one transverse dimension.
Claim 19
Dependent Claim
15 words
The method of claim 10, wherein the nonlinear optical medium further comprises a photorefractive crystal.
Claim 20
Dependent Claim
15 words
The method of claim 10, wherein the nonlinear optical medium further comprises a Kerr medium.
Claim 21
Dependent Claim
148 words
A nonlinear optical interconnect, comprising: a nonlinear optical medium; an optical vector input beam impinging on the medium, the transverse spatial intensity of the vector input being modulated by an optical device; an optical interconnect input beam impinging on the medium, the transverse spatial intensity of the interconnect input beam being modulated by a predetermined two dimensional interconnect matrix; and an optical probe beam impinging on the medium, the vector input beam, the interconnect input beam, and the probe beam being oriented with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices, the output beam being applied as an input to the optical device.
Claim 22
Dependent Claim
148 words
A nonlinear optical interconnect, comprising: a nonlinear optical medium; an optical vector input beam impinging on the medium, the transverse spatial intensity of the vector input being modulated by an optical device; an optical interconnect input beam impinging on the medium, the transverse spatial intensity of the interconnect input beam being modulated by a predetermined two dimensional interconnect matrix; and an optical probe beam impinging on the medium, the vector input beam, the interconnect input beam, and the probe beam being oriented with respect to one another and with respect to the medium such that the beams interact within the medium by means of four-wave mixing, thereby producing a diffracted output beam which emerges from the medium, the transverse spatial intensity of the output beam being modulated by the product of the first and second matrices, the output beam being applied as an input to the optical device.
Claim 23
Dependent Claim
15 words
The interconnect of claim 19, wherein the probe beam further comprises a uniform plane wave.
Claim 24
Dependent Claim
19 words
The interconnect of claim 19, wherein the vector input beam is counterpropagating with respect to the interconnect input beam.
Claim 25
Dependent Claim
25 words
The interconnect of claim 19, further comprising a cylindrical lens for fanning the vector input beam out into a two dimensional matrix of identical rows.
Claim 26
Dependent Claim
20 words
The interconnect of claim 22, further comprising a second cylindrical lens for summing the output beam over one transverse dimension.
Claim 27
Dependent Claim
15 words
The interconnect of claim 19, wherein the nonlinear optical medium further comprises a photorefractive crystal.
Claim 28
Dependent Claim
15 words
The interconnect of claim 19, wherein the nonlinear optical medium further comprises a Kerr medium.
References Cited (Backward Citations)
US4386414A
Cited
US4588255A
Cited
US4620293A
Cited
US4633428A
Cited
US4592004A
Cited
US4633427A
Cited
US4651297A
Cited
US4641273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |