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Photonic crystal three-port circulator

By utilizing the optical rotation effect of the magneto-optical cavity in the photonic crystal three-port circulator, the unidirectional circulatory function of light at the three waveguide ports is realized, which solves the problem that the existing magneto-optical circulator is too bulky and is not suitable for photonic crystal integration, and improves the efficiency Optical system performance and stability.

Inactive Publication Date: 2010-06-09
SHENZHEN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the magneto-optical circulator in the prior art, such as its large volume and unsuitability for integration with photonic crystal devices. The present invention provides a photonic crystal three-port circulator

Method used

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Embodiment Construction

[0021] The present invention relates to a photonic crystal three-port circulator. The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0022] Such as figure 1 As shown, the present invention provides a photonic crystal circulator 10, which includes a dielectric background material 11, a plurality of first air columns 12, six second air columns 13, a plurality of third air columns 14 (air columns C), A plurality of fourth air columns 15 (air columns D), a magneto-optical cavity (not shown), a first waveguide 17 , a second waveguide 18 and a third waveguide 19 . The multiple first air columns 12 , the six second air columns 13 , the multiple third air columns 14 and the multiple fourth air columns 15 are symmetrically arranged in a triangular lattice in the dielectric background material 11 . The magneto-optical cavity is located at the center of the photonic crystal three-port circulator 10, and incl...

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Abstract

The invention relates to a photonic crystal three-port circulator, which comprises a medium background material and a plurality of first air columns which are symmetrically arranged in the form of triangular crystal lattice in the medium background material. The circulator further comprises a magnetic optical cavity and three waveguides, the magnetic optical cavity is in the centre of the photonic crystal three-port circulator, the three waveguides are symmetrically and rationally distributed by using the magnetic optical cavity as a centre, each waveguide comprises a waveguide port which is arranged at the position of the waveguide far away from the magnetic optical cavity, and the photonic crystal three-port circulator circulates and transmits the light incident from a waveguide port in a single direction. The invention has simple and compact structure and is easily integrated with other photonic crystal devices.

Description

【Technical field】 [0001] The invention relates to a photonic crystal three-port circulator, in particular to a medium-air column type photonic crystal three-port circulator. 【Background technique】 [0002] The increasing development of modern all-optical information processing technology has laid a solid foundation for the realization of optical circuit integrated chips. In 1987, scholars such as E. Yablonovitch and S. John proposed the concept of photonic crystals, and then photonic crystals have been continuously studied in depth. They are considered to be one of the photonic devices with the most potential to realize a new generation of all-optical integrated chips. Photonic crystals are a new type of artificial material whose dielectric constants are periodically arranged in space. Just like the manipulation of electrons by semiconductor materials, it can realize the control and operation of photons. After more than 20 years of development, photonic crystals have made g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/095
CPCG02F1/0955G02B6/1225B82Y20/00G02B2006/12157G02F2202/32G02F1/00
Owner SHENZHEN UNIV