Automatic adjusting system of frequency shift keying modulator
US7936996B2 · kind B2 · utility
5Cited by
11References
6Claims
0Family size
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Key dates
| Filing date | Aug 23, 2006 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Mar 17, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical modulator achieving high extinction ratio and an optical modulator system. By a control system performing an adjustment method comprising predetermined steps by applying a bias voltage daringly to a modulation electrode for switching the USB signal and LSB signal of an established optical SSB modulator or optical FSK modulator, a means for adjusting bias voltage applied to each bias electrode preferably automatically is provided and a bias point where the extinction ratio of an optical modulator is maximized can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.