Method for selection of optical fiber and system for inspection of optical fiber
US7102739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2005 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Jul 20, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical fiber inspecting system comprises a waveform measuring unit for measuring an OTDR waveform for an optical fiber and a waveform evaluating unit for evaluating an anomaly within the optical fiber through a use of the measured waveform. The waveform evaluating unit comprises a calculating part and a detecting part. The calculating part calculates the gradient and the amount of change in gradient of the waveform at each time point by means of a gradient calculating section and a gradient change amount calculating section. The detecting part determines whether or not the gradient and the amount of change in gradient are within a defined allowable range of gradient and a defined allowable range of amount of change, respectively, by way of a gradient determining section and a gradient change amount determining section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.