Hollow waveguide and method of making same
US5995696A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 15, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Dec 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/032
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A solution of a metallic compound or a cyclic olefin polymer is introduced into a metallic pipe to deposit the solution onto the whole inner wall of the metallic pipe followed by heat treatment at a high temperature to dry and solidify the solution, thereby forming a dielectric layer. Thus, a metallic hollow waveguide is prepared which comprises a metallic pipe, a dielectric layer provided on the inner wall of the pipe, and a hollow region defined by the inner wall of the dielectric layer. The above constitution makes it possible to provide a highly reliable hollow waveguide which is usable in a broad waveband, for which a quartz optical fiber is unusable, causes no significant transmission loss, can be mass produced, and can be easily produced in a reduced diameter and in an increased length, and to provide a method of making the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.