Optical modulator and a method for adapting an optical modulator
US7426321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Mar 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an optical modulator, divided into at least two active segments separated by at least one passive segment. The modulator comprises: an optical waveguide with an optical group index no having an optical signal propagating at an optical velocity vo, and a microwave transmission line with an electrical propagation index np, having an electrical signal propagating at an electrical velocity Ve. The electrical propagation index np of the unloaded microwave transmission line is lower than the optical group index no of the optical waveguide. The loading and length of the microwave transmission line are adjusted for a specific Bloch impedance and electrical velocity ve. The invention also relates to a method for adapting the impedance of an optical modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.