US3900245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler for liquid core optical waveguides
Assignee: Post Office
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Filing: 1973-08-24
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Granted: 1975-08-19
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Expires: 1993-08-24
Abstract
Abstract A dielectric optical waveguide coupling for use with liquid cored guides consists of a tapered section of solid cored dielectric optical waveguide inserted into the hollow core of the liquid cored guide. Two guides may be joined by having a solid cored dielectric optical waveguide with tapers at each end. The junction between the tapered solid cored guide and the liquid cored guide may be sealed with an epoxy resin.
Inventors
- 👤 Richard Burnaby Dyott
- 👤 John Hill Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/262
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
142 words
A DIELECTRIC OPTICAL WAVEGUIDE COUPLING INCLUDING FIRST, SECOND AND THIRD LENGTHS OF DIELECTRIC OPTICAL WAVEGUIDE, SAID FIRST LENGTH HAVING A SOLID CLADDING AND CORE, A CENTRAL CYLINDRI CAL PORTION AND OPPOSITELY TAPERED END PORTIONS, SAID SECOND AND THIRD LENGTHS EACH HAVING A LIQUID CORE AND A SOLID CLADDING SAID LENGTHS BEING DISPOSED IN AXIAL ALINMENT WITH EACH OTHER AND WITH SAID LENGTH BETWEEN THE OTHER TWO AND THE TAPERED PORTIONS OF SAID FIRST LENGTH BEING DISPOSED PARTIALLY WITHIN THE LIQUID CORES OF SECOND AND THIRD LENGTS, SAID SECOND LENGTH HAVING A PYREX CLADDING AND A BROMORTICHLORMETHANE CORE, SAID FIRST LENGTH HAVING A CLADDING CONSISTING OF SCHOTT GLASS FKI AND A CORE SELECTED FROM THE GROUP CONSISTING OF SCHOTT GLASS 2KN7 AD PK1, AND SAID THIRD LENGTH HAVING A PYREX CLADDING AND A CORE SELECTED FROM THE GROUP CONSISTING OF BROMOTRICHLORMETHANE AND TETRACHLOROETHYLENE.
Claim 2
Dependent Claim
142 words
A DIELECTRIC OPTICAL WAVEGUIDE COUPLING INCLUDING FIRST, SECOND AND THIRD LENGTHS OF DIELECTRIC OPTICAL WAVEGUIDE, SAID FIRST LENGTH HAVING A SOLID CLADDING AND CORE, A CENTRAL CYLINDRI CAL PORTION AND OPPOSITELY TAPERED END PORTIONS, SAID SECOND AND THIRD LENGTHS EACH HAVING A LIQUID CORE AND A SOLID CLADDING SAID LENGTHS BEING DISPOSED IN AXIAL ALINMENT WITH EACH OTHER AND WITH SAID LENGTH BETWEEN THE OTHER TWO AND THE TAPERED PORTIONS OF SAID FIRST LENGTH BEING DISPOSED PARTIALLY WITHIN THE LIQUID CORES OF SECOND AND THIRD LENGTS, SAID SECOND LENGTH HAVING A PYREX CLADDING AND A BROMORTICHLORMETHANE CORE, SAID FIRST LENGTH HAVING A CLADDING CONSISTING OF SCHOTT GLASS FKI AND A CORE SELECTED FROM THE GROUP CONSISTING OF SCHOTT GLASS 2KN7 AD PK1, AND SAID THIRD LENGTH HAVING A PYREX CLADDING AND A CORE SELECTED FROM THE GROUP CONSISTING OF BROMOTRICHLORMETHANE AND TETRACHLOROETHYLENE.
Claim 3
Dependent Claim
20 words
A coupling as defined by claim 1 in which said lengths are sealed together by a layer of epoxy resin.
Claim 4
Dependent Claim
143 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a Pyrex cladding and a core of hexachlorobutadiene, said first length having a cladding of Schott glass FK1 and a core selected from the group consisting of Schott glass BaLF8 and BaK5, and said third length having a Pyrex cladding and a core selected from the group consisting of hexachlorobutadiene and hexachlorocyclopentadiene.
Claim 5
Dependent Claim
143 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a Pyrex cladding and a core of hexachlorobutadiene, said first length having a cladding of Schott glass FK1 and a core selected from the group consisting of Schott glass BaLF8 and BaK5, and said third length having a Pyrex cladding and a core selected from the group consisting of hexachlorobutadiene and hexachlorocyclopentadiene.
Claim 6
Dependent Claim
20 words
A coupling as defined by claim 3 in which said lengths are sealed together by a layer of epoxy resin.
Claim 7
Dependent Claim
151 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a quartz cladding and a core of bromotrichloromethane, said first length has a cladding selected from the grouP consisting of Schott glass FK1 and FK3 and core selected from the group consisting of Schott glass PK50, BK8 and KF3, and said third length having a cladding of quartz and a core selected from the group consisting of bromotrichloromethane and tetrachloroethylene
Claim 8
Dependent Claim
151 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a quartz cladding and a core of bromotrichloromethane, said first length has a cladding selected from the grouP consisting of Schott glass FK1 and FK3 and core selected from the group consisting of Schott glass PK50, BK8 and KF3, and said third length having a cladding of quartz and a core selected from the group consisting of bromotrichloromethane and tetrachloroethylene
Claim 9
Dependent Claim
20 words
A coupling as defined by claim 5 in which said lengths are sealed together by a layer of epoxy resin.
Claim 10
Dependent Claim
151 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a quartz cladding and a hexachlorobutadiene core, said first length has a cladding selected from the group consisting of Schott glasses FK1 and FK3 and a core selected from the group consisting of Schott glasses LF1, LF4, BaLF2 and BaLF3, said third length having a cladding of quartz and a core selected from the group consisting of hexachlorobutadiene and hexachlorocyclopentadiene.
Claim 11
Dependent Claim
151 words
A dielectric optical waveguide coupling including first, second and third lengths of dielectric optical waveguide, said first length having a solid cladding and core, a central cylindrical portion and oppositely tapered end portions, said second and third lengths each having a liquid core and a solid cladding, said lengths being disposed in axial alignment with each other and with said first length between the other two and the tapered portions of said first length being disposed partially within the liquid cores of said second and third lengths, said second length having a quartz cladding and a hexachlorobutadiene core, said first length has a cladding selected from the group consisting of Schott glasses FK1 and FK3 and a core selected from the group consisting of Schott glasses LF1, LF4, BaLF2 and BaLF3, said third length having a cladding of quartz and a core selected from the group consisting of hexachlorobutadiene and hexachlorocyclopentadiene.
Claim 12
Dependent Claim
20 words
A coupling as defined by claim 7 in which said lengths are sealed together by a layer of epoxy resin.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |