Self calibrated optical spectrum monitor
US8032020B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2007 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Mar 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical spectrum monitor includes a tunable optical detector that receives optical channel monitoring signals from an optical channel and receives a control signal that selects a frequency of an optical channel monitoring signal for detection. The tunable optical detector detects the optical channel monitoring signal selected by the control signal and generates an electrical signal related to a power of the detected optical channel monitoring signal. A processor analyzes a plurality of differences between selected optical channel monitoring frequencies and their corresponding ITU frequencies and then generates the control signal at the output that corrects for at least one of systematic band offset and systematic band tilt in the optical channel monitoring frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.