Unidirectional mode converter and optical isolator using same
US5078512A · kind A · utility
12Cited by
8References
6Claims
0Family size
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Key dates
| Filing date | Feb 20, 1991 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0955
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical isolator in which a mirror is arranged in the waveguide path to provide Fresnel reflection of the propagating light and change the light path direction by 90 degrees, the light path from the waveguide input plane to the mirror forms a first region in which magneto-optic-induced non-reciprocal mode conversion takes place, and the part of the light path from the mirror to the waveguide output plane forms a second region in which reciprocal mode conversion takes place, and mode selectors or polarizers are provided at the light input and output planes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.