Optical fiber evaluation method and optical fiber evaluation apparatus
US11879803B2 · kind B2 · utility
1Cited by
3References
6Claims
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Key dates
| Filing date | Jun 3, 2020 |
| Grant date | Jan 23, 2024 |
| Priority date | — |
| Expiry date | Jun 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/335
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber testing method is presented for measuring the change amount for the wave number k of a Brillouin Frequency Shift ν in stimulated Brillouin scattering generated in the same acoustic mode with respect to each target propagation mode. In this way, the ratio of the change amount measured at each propagation mode is acquired as the group delay ratio between the modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.