Optical modulators
US7002731B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2003 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0121
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An object of the present invention is to improve the modulation efficiency of an optical modulator in a high frequency band while satisfying the velocity matching condition. An optical modulator is provided having an optical waveguide for propagating light, an electrode for applying a voltage on the waveguide for modulating the light, a signal source electrically connected to the electrode and a terminating resistance electrically connected to the electrode. The signal source has a characteristic impedance Zi and the terminating resistance has an impedance Zl satisfying the formula (Zi<Zl). Alternatively, the signal source has a characteristic impedance Zi and the electrode has a characteristic impedance Zc satisfying the formula (Zi<Zc).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.