Fiber-optic rotary coupler with lossy microbends
US4749249A · kind A · utility
13Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Feb 19, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A novel fiber optic rotary coupler for coupling an optical signal between noncontacting opposing surfaces of moving first and second members, includes an optical fiber with the optical signal propagating therein disposed on a microbending means. The microbending means is formed on the first member opposing surface and induces a plurality of lossy microbends in the optical fiber. A portion of the optical signal laterally propagates therethrough across to the second member's opposing surface to a detector positioned therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.