Photonic crystal three-port circulator with multiple second air columns
US8693823B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Jan 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Taught is a photonic crystal three-port circulator, which comprises a dielectric background material and a plurality of first air columns which are symmetrically arranged in the form of triangular lattice in the dielectric background material. The photonic crystal three-port circulator also comprises a magneto-optical cavity and three waveguides, wherein the magneto-optical cavity is arranged at the center of the photonic crystal three-port circulator; the three waveguides are symmetrically distributed around the magneto-optical cavity; and each waveguide comprises a waveguide port which is arranged at the position in the waveguide far away from the magneto-optical cavity. The photonic crystal three-port circulator realizes circular light transmission in single rotational direction from any one of the waveguide ports to another next to it, has a simple and compact structure, and can be easily integrated with other photonic crystal devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.