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US4701030A
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Thermal stable optical logic element
Assignee: Nokia Bell Labs
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Filing: 1985-03-15
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Granted: 1987-10-20
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Expires: 2005-03-15
Abstract
Abstract An optical logic element in which energy absorption is approximately constant is described.
Inventors
- 👤 Jack L. Jewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:04
CPC Classifications
G; G02; G02F; G02F3/00; G02F3/02; G02F3/024
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
An optical device comprising: an optical nonlinear element; means for making a probe beam incident on said element; means for making at least one input beam incident on said element; and means for detecting the output from said element; said element being such that, in the presence of said at least one input beam, a lesser amount of the energy of said probe beam is absorbed by said element as compared with energy of probe beam absorbed in the absence of said at least one input beam, whereby heat dissipated by said element is at least approximately constant during device operation.
Claim 2
Dependent Claim
101 words
An optical device comprising: an optical nonlinear element; means for making a probe beam incident on said element; means for making at least one input beam incident on said element; and means for detecting the output from said element; said element being such that, in the presence of said at least one input beam, a lesser amount of the energy of said probe beam is absorbed by said element as compared with energy of probe beam absorbed in the absence of said at least one input beam, whereby heat dissipated by said element is at least approximately constant during device operation.
Claim 3
Dependent Claim
18 words
An optical device as recited in claim 1 in which said probe and input beams have different wavelengths.
Claim 4
Dependent Claim
37 words
An optical device as recited in claim 2 in which said element is essentially transparent to said probe beam in the absence of said at least one input beam and absorbs said at least one input beam.
Claim 5
Dependent Claim
18 words
An optical device as recited in claim 3 in which said nonlinear element comprises a nonlinear Fabry-Perot etalon.
Claim 6
Dependent Claim
16 words
An optical device as recited in claim 4 in which said etalon is a transmission etalon.
Claim 7
Dependent Claim
23 words
An array of optical device comprising a plurality of optical logic elements as recited in claim 3, said plurality forming a first array.
Claim 8
Dependent Claim
25 words
An array of optical device as recited in claim 5 further comprising a second array; and a lens, said lens optically interconnecting said two arrays.
Claim 9
Dependent Claim
27 words
An array of optical device as recited in claim 6 in which said probe beam for said first array is said input beam for said second array.
Claim 10
Dependent Claim
26 words
An optical device as recited in claim 1 in which said nonlinear element comprises a material selected from the group consisting of GaAs, InP, and CdS.
Claim 11
Dependent Claim
18 words
An optical device as recited in claim 9 in which said nonlinear element comprises a multi-quantum well structure.
References Cited (Backward Citations)
US3617779A
Cited
US4507776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |