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US5361155A
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Optical filter tuned by rotation and comprising a Fabry-Perot interferometer
Assignee: Alcatel CIT SA
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Filing: 1993-03-23
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Granted: 1994-11-01
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Expires: 2013-03-23
Abstract
Abstract A rotation tuned optical filter comprises a Fabry-Perot type interferometer disposed between an optical source and an optical receiver. The interferometer filters an input optical signal from the optical source. The input optical signal propagates substantially in a single mode. The interferometer supplies a filtered optical signal to the optical receiver which comprises a receiving surface which integrates the power density of the filtered optical signal. The filter comprises means for modifying the position of the filtered optical signal relative to the receiving surface of the optical receiver.
Inventors
- 👤 Dominique Chiaroni
- 👤 Paulette Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:12
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29379; G02B6/29395; G02B26/00; G02B26/007; G02B6/29346; G02B6/29358
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
Rotation tuned optical filter comprising a Fabry-Perot type interferometer disposed between an optical source and an optical receiver wherein said interferometer filters an input optical signal from said optical source, said input optical signal propagates substantially in a single mode, said interferometer supplies a filtered optical signal to said optical receiver which comprises a receiving surface which integrates the power density of said filtered optical signal, and said filter comprises means for modifying the position of said filtered optical signal relative to said receiving surface of said optical receiver.
Claim 2
Dependent Claim
89 words
Rotation tuned optical filter comprising a Fabry-Perot type interferometer disposed between an optical source and an optical receiver wherein said interferometer filters an input optical signal from said optical source, said input optical signal propagates substantially in a single mode, said interferometer supplies a filtered optical signal to said optical receiver which comprises a receiving surface which integrates the power density of said filtered optical signal, and said filter comprises means for modifying the position of said filtered optical signal relative to said receiving surface of said optical receiver.
Claim 3
Dependent Claim
49 words
Optical filter according to claim 1 wherein said optical source comprises a monomode input optical fiber cooperating with a collimator lens, said optical receiver comprises a focussing lens cooperating with an output optical fiber and the surface of the core of said output optical fiber constitutes said receiving surface.
Claim 4
Dependent Claim
37 words
Optical filter according to claim 1 wherein said means for modifying the position of said filtered optical signal relative to said receiving surface of said optical receiver comprise a plate whereby said filtered optical signal is refracted.
Claim 5
Dependent Claim
22 words
Optical filter according to claim 3 wherein said plate and said interferometer are at the same angle to said input optical signal.
Claim 6
Dependent Claim
14 words
Optical filter according to claim 3 wherein said plate has a fixed angular position.
Claim 7
Dependent Claim
34 words
Optical filter according to claim 1 wherein said means for modifying the position of said filtered optical signal relative to said receiving surface comprise means for displacing said optical receiver relative to said interferometer.
Claim 8
Dependent Claim
14 words
Optical filter according to claim 1 wherein said interferometer comprises a treated surface etalon.
Claim 9
Dependent Claim
17 words
Optical fiber according to claim 1 wherein said interferometer comprises a set of two fixed airspaced plates.
References Cited (Backward Citations)
GB2107147A
Cited
US4561119A
Cited
US4712862A
Cited
EP0315131A2
Cited
US4813756A
Cited
GB2237468A
Cited
GB2237469A
Cited
US5227908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |