Optical supervisory channel apparatus and method for measuring optical properties
US6765659B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Aug 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/338
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A service channel modem is adapted to determine optical properties of an optical fiber link connecting two nodes. The optical service channel (OSC) communicates an optical reference parameter over the fiber link. An optical parameter of the OSC transmitted over the fiber link is measured. By recovering the optical reference parameter from the OSC and using the measured optical parameter, certain optical properties may be determined including link loss, multi-path interference, and chromatic dispersion. When measuring chromatic dispersion, one of the fiber links serves as a synchronization reference and the other is the link being measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.