Attenuation across optical fiber splice
US4629316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1983 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Oct 25, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/35
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention provides a method and apparatus for making certain measurements across a splice of a first optical fiber and a second optical fiber, then calculating the actual decibel attenuation across the splice for optical signals transmitted through the fibers during actual use. The method of this invention involves measuring the optical power P.sub.2 in the second fiber with the fiber ends separated longitudinally a certain distance, then measuring the optical power P.sub.1 in the second fiber with the fiber ends positioned close together for effecting the splice. The attenuation is calculated from the formula EQU dB=10 log(P.sub.1 /RP.sub.2) where R is a predetermined constant for the fibers being spliced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.