Optical signal equalizer for wavelength division multiplexed optical fiber systems
US5276543A · kind A · utility
68Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0221
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention disclosure describes the application of a polarization insensitive acoustically-tuned optical filter used in a multichannel WDM system to equalize variations in the power level of the WDM channels. The invention also describes a simple means for providing a low frequency control system which enables the equalizer to determine the signal levels of N optical carriers prior to equalizing the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.