Fiber optic calibration standard apparatus
US5056915A · kind A · utility
4Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 25, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | May 25, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3172
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fiber optic calibration standard apparatus having a fiber optic cable pair which have difference in length of one quarter the wavelength of the applied modulated signal and are coupled to a mirrored reflecting surface to provide reflection reference signals that are utilized to generate error correction signals. A matched termination has one end of an optical fiber sealed in a vial of index matching fluid to absorb the optical power incident to the fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.