Method of analyzing guided optics components, optical fibers or optical guide networks by time reflectometry and reflectometer in the time sphere
US5045689A · kind A · utility
Inventors
Key dates
| Filing date | Dec 14, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Dec 14, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3109
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and reflectometer used to analyze guided optical components, optical fibers or optical guide networks by time reflectometry in a time sphere. The method comprises steps of creating a light probe signal, feeding the light probe signals into the guide connected to the system, creating a pumped signal, obtaining a backscattered response signal from the system, sampling the backscattered response signal by interacting the pump signal therewith to produce a sampled signal, and receiving the sampled signal with a photodetector, which is blind to the pump signal and the backscattered response signal and will recompose the backscattered response signal from the sampled signal. The reflectometer has a unit for forming the light probe signal, a light flow separator device for injecting the probe signal into a guide and extracting a backscattered response signal therefrom, a unit for analyzing the backscattered response signal which includes a unit for producing a light pump signal, a unit causing interaction of the pump signal with the backscattered response signal to provide an optical sampling of the response signal and produce a sample light signal, a photodetector receiving the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.