Optical fiber measurement system, optical fiber measurement method, control arithmetic device, and program
US12313489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2020 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/39
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber measurement system is presented. The optical fiber measurement system includes a light incident circuit which makes a probe light incident on one end of an optical fiber and makes a secondary probe light and a pump light as an optical pulse incident on the other end of the optical fiber; a light receiver which measures a light intensity of arbitrary one propagation mode in the probe light propagating through the optical fiber; and a control calculation device which sets a propagation mode of the probe light, the secondary probe light, and the pump light, an optical frequency difference of the secondary probe light, and an optical frequency difference of the pump light with respect to the light incident circuit, and calculates loss and crosstalk at each point in a longitudinal direction of the optical fiber from the light intensity measured by the light receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.