Optical fiber duplex coupler
US4530566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1983 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | May 11, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a simple optical fibre duplex coupler of high light-coupling efficiency, two elongate optical guides are so arranged that, over a part of their lengths extending from one end of the coupler, one optical guide surrounds and is coaxial with the other optical guide with their neighboring end faces lying in a substantially common plane. At a position intermediate the ends of the coupler, the optical guides separate into distinct optical channels. The optical guides are surrounded by and enclosed in a body 1 of a transparent plastics material having a refractive index less than that of the outer optical guide. Preferably, the inner optical guide is a composite optical fibre and the outer optical guide is an elongate body of moulded transparent plastics material having a refractive index greater than that of the material of the cladding of the composite optical fibre.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.