Reducing cross-modulation in multichannel modulated optical systems
US9191111B2 · kind B2 · utility
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6References
15Claims
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Key dates
| Filing date | Oct 3, 2008 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Feb 13, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/2557
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A modulated optical system with cross-modulation compensation reduces or corrects cross-modulation that might occur in a multichannel RF signal modulating a laser. The system detects the cross-modulation, for example, by detecting an envelope of the RF signal or by detecting RF power fluctuations, generates a cross-modulation detection signal, and imparts a compensating cross-modulation by adjusting a bias current of the laser in response to the cross-modulation detection signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.