Compact two-by-n optical components based on birefringent walk-off crystals
US5974205A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3834
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact, 2.times.n(n=1 or 2), polarization-independent optical component that comprises a first I/O port, a second I/O port and a polarization-changing optical element located between the first I/O port and the second I/O port. The second I/O port is optically aligned with the first I/O port. The first I/O port includes a serial arrangement of a first opposed walk-off crystal pair and a second opposed walk-off crystal pair, each opposed walk-off crystal pair comprising two walk-off crystals having opposite walk-off directions, the walk-off directions of the walk-off crystals of the first opposed walk-off crystal pair defining a first direction of rotation, the walk-off directions of the walk-off crystals of the second opposed walk-off crystal pair defining a second rotational direction, opposite to the first rotational direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.