Optical coupling with electric field rotation
US5577140A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 16, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Feb 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4209
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupling device for coupling a semiconductor laser emitting a diverging laser light to a converging optical system converging the laser light onto a rectangle end surface of an optical wavelength converter, comprises: a rotator for rotating the semiconductor laser about an optical axis thereof; a collimator disposed in the optical axis for converting the diverging laser light to a parallel beam along the optical axis; and a polarization rotator for rotating a plane of the electric field vibration of the parallel beam about the an optical axis to guide the beam to the converging optical system, thereby controlling the plane of the electric field vibration direction of the fundamental wave to couple the fundamental wave to a rectangle end surface at a high efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.