Optical phase shifting device
US6825966B2 · kind B2 · utility
4Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Oct 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/011
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrically adjustable phase-shifting device is arranged on a substrate comprising at least a first waveguide designed for guiding optical signals and a thermoelectric element arranged adjacent to the first waveguide in order to shift the phase of an optical signal in the first waveguide by means of a thermo-optic effect according to a control voltage applied to the thermoelectric element. In one embodiment, the thermoelectric element is a Peitier element which comprises at least first and second electrically conducting segments which are serially connected, the first and second elements alternating consecutively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.