Optical attenuator
US5677977A · kind A · utility
8Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | May 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The apparatus is an attenuator for use in an optical fiber link. The attenuator is a full circular loop of continuous optical fiber with connection means at the ends of the loop to interconnect with the other optical fiber components in the system. The attenuation of optical transmission through the loop is continuously variable by twisting the loop out of its original planar configuration. A lockable rotating shaft clamped to the side of the loop remote from the connection means is turned to rotate the loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.