US3133198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave light modulator
Assignee: AT&T Inc
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Filing: 1962-01-12
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Granted: 1964-05-12
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Expires: 1982-01-12
Abstract
No abstract record available.
Inventors
- 👤 Ivan P Kaminow
- 👤 Kompfner Rudolf
- 👤 William H Louisell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A LIGHT MODULATOR COMPRISING A WAVEGUIDE AND AN INTERACTION STRUCTURE, SAID WAVEGUIDE AND SAID STRUCTURE BEING ELECTROMAGNETICALLY COUPLED TOGETHER OVER AN EXTENDED REGION, AN ELONGATED MEMBER OF ELECTRO-OPTIC MATERIAL IN SAID STRUCTURE, MEANS FOR DIRECTING LIGHT TO BE MODULATED INTO SAID MEMBER FOR TRAVEL AXIALLY THEREALONG THROUGH SAID INTERACTION STRUCTURE, MEANS FOR APPLYING MODULATING ENERGY TO SAID WAVEGUIDE FOR TRAVEL THERETHROUGH ALONG THE REGION OF COUPLING, THE REGION OF COUPLING HAVING A COUPLING COEFFICIENT WHICH INCREASE IN AN EXPONENTIAL MANNER IN THE DIRECTION OF TRAVEL OF SAID ENERGY AND SAID BEAM AND SAID WAVEGUIDE HAVING A PROPAGATION CONSTANT THAT DECREASES IN AN EXPONENTIAL MANNER THAT IS THE INVERSE OF THE INCREASING COUPLING COEFFICIENT.
Claim 2
Dependent Claim
113 words
A LIGHT MODULATOR COMPRISING A WAVEGUIDE AND AN INTERACTION STRUCTURE, SAID WAVEGUIDE AND SAID STRUCTURE BEING ELECTROMAGNETICALLY COUPLED TOGETHER OVER AN EXTENDED REGION, AN ELONGATED MEMBER OF ELECTRO-OPTIC MATERIAL IN SAID STRUCTURE, MEANS FOR DIRECTING LIGHT TO BE MODULATED INTO SAID MEMBER FOR TRAVEL AXIALLY THEREALONG THROUGH SAID INTERACTION STRUCTURE, MEANS FOR APPLYING MODULATING ENERGY TO SAID WAVEGUIDE FOR TRAVEL THERETHROUGH ALONG THE REGION OF COUPLING, THE REGION OF COUPLING HAVING A COUPLING COEFFICIENT WHICH INCREASE IN AN EXPONENTIAL MANNER IN THE DIRECTION OF TRAVEL OF SAID ENERGY AND SAID BEAM AND SAID WAVEGUIDE HAVING A PROPAGATION CONSTANT THAT DECREASES IN AN EXPONENTIAL MANNER THAT IS THE INVERSE OF THE INCREASING COUPLING COEFFICIENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |