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Plane magneto-optical isolator

An isolator and magneto-optical technology, applied in the field of laser communication, can solve the problems of large size, inability to meet the requirements of miniaturization and planarization, and achieve the effect of miniaturization and size reduction

Inactive Publication Date: 2014-08-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a planar magneto-optical isolator, which is used to overcome the defects that the existing magneto-optic isolator has a large size and cannot meet the requirements of miniaturization and planarization

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that the present invention is not limited to this embodiment.

[0018] The planar magneto-optical isolator includes a polarizer 100, a Faraday rotator and an analyzer 130 placed parallel to each other along the light passing direction, wherein the polarizer and the analyzer are both thin-film polarizers, and the polarizer and the analyzer are transparent. The vibration directions form an angle of 45° with each other, and an insulating layer is also provided between the polarizer and the Faraday rotator and between the analyzer and the Faraday rotator; the Faraday rotator consists of a second microstrip line layer, Insulation layer, first microstrip line layer, garnet film, GGG substrate, garnet film, first microstrip line layer, insulating layer, second microstrip line layer, wherein the second microstrip line layer, insulat...

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Abstract

The invention aims at providing a plane magneto-optical isolator which is used for overcoming the defect that the existing magneto-optical isolator is large in size and incapable of meeting the requirements of miniaturization and planarization. The plane magneto-optical isolator comprises a polarizer, a faraday rotor and an analyzer, all of which are arranged in parallel to each other in a light passing direction; the plane magneto-optical isolator is characterized in that the faraday rotor is composed of a substrate, a magneto-optical thin film layer, a first microstrip line layer, an insulating layer and a second microstrip line layer, wherein the magneto-optical thin film layer, the first microstrip line layer, the insulating layer and the second microstrip line layer are symmetrically arranged at the two sides of the substrate. The first microstrip line layer is composed of transverse microstrip lines, while the second microstrip line layer is composed of longitudinal microstrip lines, or the first microstrip line layer is composed of the longitudinal microstrip lines, while the second microstrip line layer is composed of the transverse microstrip lines. Due to the optimized design of the faraday rotor structure, the size of the magneto-optical isolator is greatly reduced and the miniaturization and planarization of the magneto-optical isolator are realized.

Description

technical field [0001] The invention relates to the technical field of laser communication, relates to a planar magneto-optical isolator, and in particular relates to an optimized design of a Faraday rotor in the planar magneto-optical isolator. Background technique [0002] In recent years, with the development of laser communication, the interaction of light and magnetism is used to improve the performance of laser communication. The magneto-optical isolator is mainly used to prevent the reflected light in the system from affecting or even damaging the performance of the device, and it is an indispensable device in long-distance or high-speed optical fiber communication systems. [0003] The magneto-optical isolator includes a Faraday rotator, a polarizer arranged on the light incident side of the Faraday rotator, and an analyzer arranged on the light exit side of the Faraday rotator. The working principle of the magneto-optical isolator mainly uses the Faraday effect, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/09
Inventor 杨青慧梅兵张怀武金曙晨文岐业刘颖力
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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