US4895422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-matchable, single-mode fiber-optic device
Assignee: United States Department of the Air Force
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Filing: 1988-12-13
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Granted: 1990-01-23
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Expires: 2008-12-13
Abstract
Abstract A nonlinear fiber-optic device including a single mode optical fiber having a longitudinal axis, for transmitting light therethrough of a given wavelength, and having a core and a cladding layer, a portion of the cladding layer being removed until a remaining portion of the cladding layer has a thickness of about one half of the given wavelength or less, and a nonlinear optical crystal having an optical axis, in contact with said remaining portion of the cladding layer, the optical axis of the crystal being substantially perpendicular to the longitudinal axis of the fiber.
Inventors
- 👤 Stephen C. Rand
- 👤 Robert A. Cronkite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/37; G02F1/377; G02F1/383
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A nonlinear fiber-optic device comprising: (a) a single mode optical fiber having a longitudinal axis, for transmitting light therethrough of a given wavelength, and having a core and a cladding layer, a portion of said cladding layer being removed until a remaining portion of said cladding layer has a thickness of about one half of said given wavelength or less; and (b) a nonlinear optical crystal having an optical axis, in contact with said remaining portion of said cladding layer, the optical axis of said crystal being substantially perpendicular to the longitudinal axis of said fiber.
Claim 2
Dependent Claim
96 words
A nonlinear fiber-optic device comprising: (a) a single mode optical fiber having a longitudinal axis, for transmitting light therethrough of a given wavelength, and having a core and a cladding layer, a portion of said cladding layer being removed until a remaining portion of said cladding layer has a thickness of about one half of said given wavelength or less; and (b) a nonlinear optical crystal having an optical axis, in contact with said remaining portion of said cladding layer, the optical axis of said crystal being substantially perpendicular to the longitudinal axis of said fiber.
Claim 3
Dependent Claim
31 words
The device of claim 1 wherein said remaining portion of said cladding lyaer has a thickness of about one quarter of said given wavelength of light transmitted through said optical fiber.
Claim 4
Dependent Claim
12 words
The device of claim 1 wherein said nonlinear optical crystal comprises ADP.
Claim 5
Dependent Claim
12 words
The device of claim 2 wherein said nonlinear optical crystal comprises ADP.
Claim 6
Dependent Claim
12 words
The device of claim 1 wherein said nonlinear optical crystal comprises KDP.
Claim 7
Dependent Claim
12 words
The device of claim 2 wherein said nonlinear optical crystal comprises KDP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |