Fiber signal loss event identification
US9097615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2013 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Oct 17, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3127
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system includes a wavelength tunable laser to provide a first optical pulse of a first wavelength and a second optical pulse of a second wavelength to an optical fiber, a reflection detector to determine a first fiber attenuation curve from the first reflected pulse and a second fiber attenuation curve from the second reflected pulse, and a discontinuous loss event analyzer to identify a discontinuous loss event at a discontinuous loss point in at least one of the first fiber attenuation curve and the second first fiber attenuation curve, determine a return loss slope based on a return loss at the discontinuous loss point for the first fiber attenuation curve and a return loss at the discontinuous loss point for the second first fiber attenuation curve, and determine whether the discontinuous loss event is a bad fiber bending event based on the return loss slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.