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Reflection-type magneto-optical switch

A magneto-optical switch and reflective technology, applied in the field of optical switches, can solve the problems of large number of components, affecting production efficiency, large device volume, etc., and achieve the effect of good optical performance and high switching speed

Active Publication Date: 2014-11-19
SHANGHAI PRIMANEX PHOTOELECTRIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the problem of angle matching when using a dual-fiber collimator, either a prism or a Wollaston prism is used to couple with the dual-fiber collimator, which greatly affects the production efficiency.
On the other hand, most of the existing 2x2 magneto-optical switches use a transmissive optical path structure, two ports, and use a large number of components, which are not used to make modules and disk boxes, and the device volume is large

Method used

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  • Reflection-type magneto-optical switch
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  • Reflection-type magneto-optical switch

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Embodiment Construction

[0034] In the following, we will further elaborate on the reflective optical switch of the present invention in combination with the accompanying drawings and specific embodiments, in order to understand its structural composition, working principle and component transformation more clearly, but this cannot limit the present invention scope of protection.

[0035] figure 1 The arrangement of the optical components of a magneto-optical switch optical switch 100 (hereinafter referred to as the switch 100 ) is shown. The switch 100 is an optical switch, which adopts a reflective optical path structure and has no moving parts. The present invention provides an optical element that has good optical performance, has high switching speed, and can be realized in a small size space. Structurally, the switch 100 of the present invention includes four single-fiber collimators, that is, a first input single-fiber collimator 110, a second input single-fiber collimator 111, a first output...

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Abstract

The invention relates to a reflection-type magneto-optical switch. The optical switch structurally comprises a single fiber collimator component, a first dual-refraction crystal, a Faraday rotator, a second dual-refraction crystal and a reflection prism which are sequentially arranged along the light beam incidence direction; a first half-wave plate is arranged between the first dual-refraction crystal and the Faraday rotator; a second half-wave plate is arranged in front of the Faraday rotator and the second dual-refraction crystal; a third half-wave plate is arranged between the second dual-refraction crystal and the reflection prism; and controllable elements for providing magnetic fields are arranged around the Faraday rotator. The optical switch provided by the invention provides an optical path structure which is inventive in element arrangement and is compact in structure, and can enable the optical switch to use less and smaller elements.

Description

technical field [0001] The invention relates to an optical element, in particular to an optical switch for realizing on-off control of an optical path based on the Faraday magneto-optical rotation effect. Background technique [0002] The optical switch component is one of the important components of the all-optical network. In the optical fiber network system, the direct, cross or multi-party switching transmission of optical signals is very important in optical communication systems, sensing and detection fields, instrumentation fields, and defense industries. Wide range of applications. [0003] There are many ways to realize optical switches, including mechanical optical switches, microelectromechanical (MEMS) optical switches, electro-optical optical switches, thermo-optical optical switches, acousto-optic optical switches and magneto-optical optical switches. Both switching techniques have advantages and disadvantages. For example, mechanical optical switches can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/09
Inventor 顾连军孙龙波郭磊赵强
Owner SHANGHAI PRIMANEX PHOTOELECTRIC TECH
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