All-optical switch

An optical control and optical switch technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of insufficient response speed of optical passive devices and limited working temperature, and achieve the effect of reliable performance and long working life.

Inactive Publication Date: 2010-06-30
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0006] The invention provides an all-optical control optical switch, which solves the problems of insufficient response speed and limited operating temperature of existing optical passive devices, so as to directly realize the transmission and routing of huge flow signals at the optical layer, and can realize high-speed switching at room temperature. switch work

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the present invention includes a multi-quantum dot layer optical element, a control optical fiber collimator, a polarizer, a signal optical fiber collimator and a polarizer located on a base platform.

[0017] figure 1 Among them, 1 is a multi-quantum dot layer optical element, 2 is a signal optical fiber collimator, 3 is a control optical fiber collimator, 4 is a polarizer, 5 is an analyzer, 6 is a signal optical path, and 7 is a control optical path , 8 is the output light path.

[0018] The multi-quantum dot layer optical element itself has the same absorption coefficient for the two circularly polarized components of the incident signal light, so the two circularly polarized lights have the same optical path and the same optical field amplitude after passing through the multi-quantum dot layer optical element, and the reflection ...

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Abstract

The invention relates to an all-optical switch of a photoelectric device, which is used for solving the problem that an optical passive device has slow response in an optical add-drop multiplexing system and an optical cross connection system of an all-optical high-speed network or cannot work normally at the room temperature. The all-optical switch comprises a multi-quantum dot layer semiconductor optical element of a Bragg structure positioned on a base platform, a control light fiber collimator, a polarizer, a signal light fiber collimator and an analyzer, wherein the multi-quantum dot layer optical element consists of N Bragg-structural composite layers extended and grown from a substrate; and each composite layer consists of a quantum dot layer and a barrier layer. The all-optical switch has the advantages of capability of realizing ultra-fast switching actions, relatively greater switching contrast, relatively lower insertion loss, low saturated pumping efficiency, switching response wavelength in an optical communication waveband, room temperature response characteristic, reliable performance and long service life, can be applied to the optical add-drop multiplexing system and the optical cross connection system and also can directly realize the transmission and routing of heavy traffic of signals in an optical layer.

Description

technical field [0001] The invention belongs to an optoelectronic device, and in particular relates to an all-optical control optical switch, which is applied to an optical branch multiplexing (OADM) system and an optical cross-connection (OXC) system, and solves the all-optical switch control and optical switch of an ultra-high-speed all-optical network issues such as switching. Background technique [0002] At present, according to different switching principles, optical switches can be divided into mechanical optical switches, micro-electromechanical system (MEMS) optical switches, thermo-optical switches, liquid crystal optical switches, etc. The highest switching rate of these optical switches is in the order of ms. Among them, micro-electromechanical system (MEMS) optical switches are widely used in various backbone network and large-scale switching network solutions due to their advantages such as high integration, low loss, low crosstalk and high extinction ratio. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35
Inventor 王涛肖昆辉胡志强
Owner HUAZHONG UNIV OF SCI & TECH
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