Photonic crystal four-port based on coupling of magneto-optical cavities
US8699835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2010 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Mar 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a photonic crystal four-port circulator based on the coupling of magneto-optical cavities, which comprises two same magneto-optical cavities and three waveguides which are symmetrically distributed on the periphery of each magneto-optical cavity, wherein two waveguides connected with the magneto-optical cavities respectively are in a “v-shaped” arrangement, thereby guaranteeing that waveguides which are connected with the left sides of the two magneto-optical cavities are parallel to each other and waveguides which are connected with the right sides of the two magneto-optical cavities are parallel to each other as well and achieving the high-efficiency transmission in the case of the coupling of the magneto-optical cavities. The circulator provided by the invention utilizes the optical activity of the magneto-optical cavities to realize the rotation of the mode pattern of electromagnetic fields in the cavities, achieves the light transmission and isolation effects on different waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.