US4298245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguides with a low birefringence
Assignee: Siemens AG
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Filing: 1979-08-06
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Granted: 1981-11-03
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Expires: 1999-08-06
Abstract
Abstract The present invention is directed to an improvement in a magneto-optical device having a light waveguide for conducting light characterized by the light waveguide being a cladded optical fiber having a core of quartz glass and a cladding of synthetic material. This improvement provides an improved method of using the magneto-optical device by suppressing distortions of polarized light by reducing birefringence in the waveguide by using a waveguide comprising an optical fiber having a quartz glass core and a cladding of synthetic material.
Inventors
- 👤 Hubert Aulich
- 👤 Alfred Papp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:27
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; G02B6/02033; G01; G01R; G01R15/00; G01R15/14; G01R15/24; G01R15/245; G01R15/246; G02B6/10; G02B6/105; G02F; G02F1/00; G02F1/01; G02F1/09; G02F1/095
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
In a magneto-optical transducer having a light waveguide for conducting light which waveguide is wound into a coil, and having means for projecting polarized light into at least one end of the waveguide and means for measuring the amount of rotation in the polarized light leaving at least one end of the waveguide, the improvement comprising said light waveguide being a cladded optical fiber having a core of quartz glass and a cladding of synthetic material so that the light waveguide even with mechanical stresses from being wound in a coil has no noticeable birefringence.
Claim 2
Dependent Claim
95 words
In a magneto-optical transducer having a light waveguide for conducting light which waveguide is wound into a coil, and having means for projecting polarized light into at least one end of the waveguide and means for measuring the amount of rotation in the polarized light leaving at least one end of the waveguide, the improvement comprising said light waveguide being a cladded optical fiber having a core of quartz glass and a cladding of synthetic material so that the light waveguide even with mechanical stresses from being wound in a coil has no noticeable birefringence.
Claim 3
Dependent Claim
18 words
In a magneto-optical transducer according to claim 1, wherein the synthetic material of the cladding is a polyvinylidene-fluoride.
Claim 4
Dependent Claim
18 words
In a magneto-optical transducer according to claim 1, wherein the synthetic material of the cladding is a polyperfluoro-ethylene-propylene.
Claim 5
Dependent Claim
18 words
In a magneto-optical transducer according to claim 1, wherein the synthetic material of the cladding is a polyfluoro-alkyl-methacrylate.
Claim 6
Dependent Claim
18 words
In a magneto-optical transducer according to claim 1, wherein the synthetic material of the cladding is a polymethyl-siloxane.
Claim 7
Dependent Claim
68 words
In a method of using a magneto-optical transducer, said method including passing a polarized light through a waveguide which is wound into a coil and detecting the polarized light passing through the waveguide the improvement comprising suppressing distorsions of the polarized light by reducing birefringence in the wound waveguide by utilizing a waveguide comprising an optical fiber having a quartz glass core and a cladding of synthetic material.
Claim 8
Dependent Claim
68 words
In a method of using a magneto-optical transducer, said method including passing a polarized light through a waveguide which is wound into a coil and detecting the polarized light passing through the waveguide the improvement comprising suppressing distorsions of the polarized light by reducing birefringence in the wound waveguide by utilizing a waveguide comprising an optical fiber having a quartz glass core and a cladding of synthetic material.
Claim 9
Dependent Claim
17 words
In a method according to claim 6, wherein the synthetic material of the cladding is a polyvinylidene-fluoride.
Claim 10
Dependent Claim
17 words
In a method according to claim 6, wherein the synthetic material of the cladding is a polyperfluoro-ethylene-propylene.
Claim 11
Dependent Claim
17 words
In a method according to claim 6, wherein the synthetic material of the cladding is a polyfluoroalkyl-methacrylate.
Claim 12
Dependent Claim
17 words
In a method according to claim 6, wherein the synthetic material of the cladding is a polymethyl-siloxane.
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) | 1984-11-02 | 1985-05-04 | 1985-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-02 | 1989-05-04 | 1989-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-02 | 1993-05-04 | 1993-11-03 | $7700.00 | Window Closed / Lapsed |