EP0344478A2
Expired / Lapsed
EP
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Hollow fiber waveguide and method of making same
Assignee: Ramot at Tel Aviv University Ltd
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Filing: 1989-05-02
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Granted: —
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Expires: 2009-05-02
Abstract
Abstract A hollow fiber waveguide particularly useful for transmitting electromagnetic radiation in the infrared and visible range, comprises a hollow tube, a metal layer on the inner surface of the hollow tube, and a thin dielectric film over the metal layer.
Inventors
- 👤 Natan Croitoru
- 👤 Jacob Dror
- 👤 Ephraim Goldenberg
- 👤 David Mendelovic
- 👤 Ganot Israel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/02; G02B6/032
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
40 words
A hollow fiber waveguide particularly useful for transmitting electromagnetic radiation in the infrared and visible range, comprising: a hollow tube; a metal layer on the inner surface of the hollow tube; and a thin dielectric film over said metal layer.
Claim 2
Dependent Claim
40 words
A hollow fiber waveguide particularly useful for transmitting electromagnetic radiation in the infrared and visible range, comprising: a hollow tube; a metal layer on the inner surface of the hollow tube; and a thin dielectric film over said metal layer.
Claim 3
Dependent Claim
34 words
The waveguide according to Claim 1, wherein said metal layer is a thin metal coating of up to 20 microns in thickness, and said thin dielectric film is up to 10 microns in thickness.
Claim 4
Dependent Claim
21 words
The waveguide according to Claim 1, wherein said metal coating is of silver, and said dielectric coating is a silver halide.
Claim 5
Dependent Claim
13 words
The waveguide according to Claim 1, wherein said hollow tube is a fluoropolymer.
Claim 6
Dependent Claim
12 words
The waveguide according to Claim 1, wherein said hollow tube is steel.
Claim 7
Dependent Claim
38 words
A method of making the hollow waveguide according to Claim 1, comprising: depositing a thin metal coating on the inner face of a hollow tube; and depositing a dielectric film of an inorganic material on said metal coating.
Claim 8
Dependent Claim
42 words
The method according to Claim 6, wherein said metal coating is deposited by applying to said inner face of the hollow tube a solution of a metal salt, and reducing said metal salt by a reducer solution to deposit the metal coating.
Claim 9
Dependent Claim
30 words
The method according to Claim 7, wherein said dielectric film is deposited on said metal coating by treating the metal coating with a halogen to form a metal halide film.
Claim 10
Dependent Claim
20 words
The method according to Claim 8, wherein said metal coating is silver, and said metal halide film is silver iodide.
Claim 11
Dependent Claim
29 words
The method according to Claim 6, wherein said metal metal coating is copper, and said dielectric film is formed by oxidizing the copper to produce a copper oxide film.
References Cited (Backward Citations)
No citation records indexed.
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