Optical isolator
US5262892A · kind A · utility
19Cited by
9References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Apr 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical isolator, first, second and third birefringent crystals shaped in a flat plate are arranged in order in a forward direction in which a light beam advances and formed in ratios 1:1:1 in thickness. One magneto-optical member is interposed between the first and second birefringent crystals and another magneto-optical member may be arbitrarily disposed between the second and third birefringent crystals. Since the birefringent crystals are equal in thickness, the optical isolator can be readily produced with a high accuracy without much labor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.