US4465336A
Expired / Lapsed
US
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Waveguide and method of manufacturing same
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1981-12-11
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Granted: 1984-08-14
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Expires: 2001-12-11
Abstract
Abstract A waveguide and method of making the same is disclosed which comprises an elongated dielectric core surrounded by dielectric shell at least one of which have an anisotropic index of refraction. The core is made up of a plurality of layers each having a parallel surface normal with pairs of such layers having unequal indices of refraction. The layers are selected to preferably have the same thickness.
Inventors
- 👤 Hans P. Huber
- 👤 Peter Russer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:53
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/105; H; H01; H01P; H01P3/00; H01P3/16; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
90 words
A waveguide comprising an elongated dielectric core and dielectric cladding surrounding the core, at least one of the core and cladding, in the direction perpendicular to a major axis of the waveguide having at least one anisotropic index of refraction, at least one of the core and cladding being built up of a succession of at least one of electromagnetically isotropic and electromagnetically anisotropic layers which have unequal refractive indices in identical directions, and the major axis of the waveguide being substantially perpendicular to a surface normal to the layers.
Claim 2
Dependent Claim
90 words
A waveguide comprising an elongated dielectric core and dielectric cladding surrounding the core, at least one of the core and cladding, in the direction perpendicular to a major axis of the waveguide having at least one anisotropic index of refraction, at least one of the core and cladding being built up of a succession of at least one of electromagnetically isotropic and electromagnetically anisotropic layers which have unequal refractive indices in identical directions, and the major axis of the waveguide being substantially perpendicular to a surface normal to the layers.
Claim 3
Dependent Claim
28 words
A waveguide according to claim 1, wherein the succession of layers comprises a continuous sequence of two layers having alternately different refractive indices and being substantially electromagnetically isotropic.
Claim 4
Dependent Claim
21 words
A waveguide according to claim 2, wherein the succession of layers comprising two layers have substantially identical thicknesses (d A ).
Claim 5
Dependent Claim
27 words
A waveguide according to claim 3, wherein an electromagnetically anisotropic core is formed by a succession of layers, and is surrounded by a substantially electromagnetically isotropic cladding.
Claim 6
Dependent Claim
24 words
A waveguide according to claim 3, wherein an electromagnetically anisotropic cladding is formed by a succession of layers and encloses an electromagnetically isotropic core.
Claim 7
Dependent Claim
29 words
A waveguide according to claim 4 or 5 wherein, in a direction perpendicularly to the major axis of the waveguide, the core has a cross-section which is substantially circular.
Claim 8
Dependent Claim
28 words
A waveguide according to claim 6 wherein a first succession of layers forms an electromagnetically anisotropic core and a second succession of layers forms an electromagnetically anisotropic cladding.
Claim 9
Dependent Claim
29 words
A waveguide according to claim 7, wherein the surface normal to the first succession of layers is substantially perpendicular to the surface normal to the second succession of layers.
Claim 10
Dependent Claim
20 words
A waveguide according to claim 7, wherein the core is circular in cross-section and the cladding is cylindrical in cross-section.
Claim 11
Dependent Claim
32 words
A waveguide according to claim 1, wherein the core built up of a first succession of layers and has a cross-section having a larger extent in the direction of the layer planes.
Claim 12
Dependent Claim
49 words
A waveguide according to claim 1, wherein the shell is built up of a second succession of layers, the core having a cross section having a larger extent in a direction substantially parallel to the surface normal to the second succession of layers, than in a direction perpendicular thereto.
Claim 13
Dependent Claim
17 words
A waveguide according to claims 10 or 11, wherein the core has a substantially elliptical cross section.
Claim 14
Dependent Claim
17 words
A waveguide according to claims 10 or 11 wherein the core has a substantially rectangular cross section.
Claim 15
Dependent Claim
13 words
A waveguide according to claim 1, wherein the waveguide is an optical waveguide.
Claim 16
Dependent Claim
77 words
A method of manufacturing a waveguide according to claim 13, comprising: placing a slender bar in a tube, with the bar and/or the tube being built up of a plurality of layers which, in one direction, are substantially parallel to one of a bar axis and tube axis, and drawing such an arrangement into an optical waveguide in such a way that the bar forms a core and the tube forms a cladding of the optical waveguide.
Claim 17
Dependent Claim
23 words
A method according to claim 15, wherein the bar and/or the tube are substantially made for one of a vitreous and vitrifying material.
Claim 18
Dependent Claim
24 words
A method according to claim 15, wherein the bar is manufactured from a stip of a carrier material on which several layers are deposited.
Claim 19
Dependent Claim
61 words
A method according to claim 15, wherein the bar is manufactured from a carrier tube which is coated on its inside with at least one layer and which, upon depositing the coating, is collapsed to a cylindrical body of symmetrical shape in such a way that the cross-section of the bar become substantially one of circular, elliptical and rectangular in shape.
Claim 20
Dependent Claim
38 words
A method according to claim 15, wherein the tube is manufactured from a body built up of substantially parallel layers, in a way such that the layers come to extend substantially parallel to the axis of the tube.
References Cited (Backward Citations)
US4123483A
Cited
US4354736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |