US4497535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical pulse generator
Assignee: Verizon Laboratories Inc
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Filing: 1982-03-19
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Granted: 1985-02-05
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Expires: 2002-03-19
Abstract
Abstract A corrugated nonlinear optical waveguide converts a continuous input light beam into a train of pulses. The waveguide material is indium antimonide (InSb).
Inventors
- 👤 Herbert G. Winful
- 👤 Gene D. Cooperman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/3515; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/122; G02F1/3511
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
A passive optical pulse generator device comprising a substrate; and a thin wave-guiding layer of material deposited thereon, said material having a large third-order nonlinear susceptibility so that the refractive index of said material changes appreciably in response to changes in light intensity, wherein said material is indium antimonide.
Claim 2
Dependent Claim
49 words
A passive optical pulse generator device comprising a substrate; and a thin wave-guiding layer of material deposited thereon, said material having a large third-order nonlinear susceptibility so that the refractive index of said material changes appreciably in response to changes in light intensity, wherein said material is indium antimonide.
Claim 3
Dependent Claim
180 words
An optical pulse generator comprising a substrate having an index of refraction n s ; a thin wave-guiding layer of material deposited on said substrate, said material having an index of refraction n f and having a large third-order nonlinear susceptibility so that the refractive index of refraction n f changes appreciably in response to changes in light intensity, said layer having one surface in contact with said substrate and having a second surface not in contact with said substrate, said second surface being formed with periodic corrugations, said layer having a thickness T measured from said one surface to the closest corrugation, said corrugations having an amplitude A measured from trough to crest of any one of said corrugations, said corrugations having a wavelength λ o measured from a crest of one corrugation to a crest of an adjacent corrugation, and wherein n f is greater than n s ; and means for introducing coherent light through said layer of material, along a direction parallel to said one surface, at a wavelength λ, wherein said material is indium antimonide.
Claim 4
Dependent Claim
180 words
An optical pulse generator comprising a substrate having an index of refraction n s ; a thin wave-guiding layer of material deposited on said substrate, said material having an index of refraction n f and having a large third-order nonlinear susceptibility so that the refractive index of refraction n f changes appreciably in response to changes in light intensity, said layer having one surface in contact with said substrate and having a second surface not in contact with said substrate, said second surface being formed with periodic corrugations, said layer having a thickness T measured from said one surface to the closest corrugation, said corrugations having an amplitude A measured from trough to crest of any one of said corrugations, said corrugations having a wavelength λ o measured from a crest of one corrugation to a crest of an adjacent corrugation, and wherein n f is greater than n s ; and means for introducing coherent light through said layer of material, along a direction parallel to said one surface, at a wavelength λ, wherein said material is indium antimonide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |