Loop optical circulator
US6747797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A four-port loop optical circulator includes a first, a second, a third and a fourth optical ports for receiving optical beam therein. The circulator further includes a plurality of optical components. The optical components include a walk-off crystal for generating a vertical optical path displacement for a vertical polarized optical beam and for passing a horizontally polarized optical beam therethrough maintaining a same optical path. The optical components also include a vertical displacement device for shifting an optical path along a vertical direction with a predefined vertical displacement for an optical beam transmitted with a particular polarization. The vertical displacement device is coupled to the walk-off crystal for guiding a beam received from the fourth port to project from the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.