Optical fiber characteristic measurement device, optical fiber characteristic measurement program, and optical fiber characteristic measurement method for measuring characteristics of optical fiber based on Brillouin gain spectrum
US12339144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2021 |
| Grant date | Jun 24, 2025 |
| Priority date | — |
| Expiry date | Dec 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/322
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber characteristic measurement device (1) includes a light detector (16) configured to detect Brillouin scattered light (LS) obtained by causing light to be incident on an optical fiber (FUT); a signal processor (18b) configured to obtain, on the basis of a detection signal (S1) which is output from the light detector, a first Brillouin gain spectrum (B1) which is a spectrum of the Brillouin scattered light obtained in a case where a spectral width of the light incident on the optical fiber is a first width and a second Brillouin gain spectrum (B2) which is a spectrum of the Brillouin scattered light obtained in a case where the spectral width of the light incident on the optical fiber is a second width larger than the first width; and a measurer (18c) configured to measure characteristics of the optical fiber on the basis of the first Brillouin gain spectrum and the second Brillouin gain spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.