Ring resonator based optical isolator and circulator
US8396337B2 · kind B2 · utility
5Cited by
2References
18Claims
0Family size
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Key dates
| Filing date | Jun 30, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Mar 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/70
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
By introducing magneto-optical garnets with high Faraday rotation and low optical loss in a ring resonator, a nonreciprocal phase shift is generated to split the resonance wavelengths of clockwise and counter-clockwise modes under magnetic field. There are three main applications based on this nonreciprocal effect, optical isolators, optical circulators, and tunable optical filters. The concept of the tunable filters and the design of optical isolators for TE and TM modes are described in the paper. With proper optical ring isolator configurations, optical circulators can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.