Electroabsorption modulator with tunable chirp
US6778309B2 · kind B2 · utility
4Cited by
6References
9Claims
0Family size
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Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Aug 22, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/255
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electroabsorption modulator comprises a tandem arrangement of a conventional electroabsorption (EA) modulator element and a phase modulator element. The EA modulator element is driven by the digital data signal and the phase modulator is driven by a chirp tuning control signal, such as the complement of the data signal. By controlling the amplitude and/or bias of the chirp tuning control signal, the frequency chirp of the intensity-modulated output signal from the EA modulator element can be controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.