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All fiber multi-path delay line selector switch based on acousto-optic function

A switching switch and delay line technology, which is applied in the field of all-fiber multi-channel optical switches, can solve the problems of large insertion loss, long response time, and poor stability, and achieve the effects of small insertion loss, fast response time, and low cost

Active Publication Date: 2015-03-04
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The significance of the present invention is to solve the problems of long response time, poor stability and large insertion loss of the mechanical optical switch in the existing adjustable optical fiber delay line system

Method used

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  • All fiber multi-path delay line selector switch based on acousto-optic function
  • All fiber multi-path delay line selector switch based on acousto-optic function
  • All fiber multi-path delay line selector switch based on acousto-optic function

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Embodiment 1

[0033] This embodiment is based on the technical solution of the present invention, and a principle test is carried out according to the test requirements. In the embodiment, a wedge-shaped acousto-optic driving pyramid is used to drive two acousto-optic speech couplers for principle verification. The experimental setup is as image 3shown. The material of the wedge-shaped ultrasonic concentrator is aluminum, the size of the wedge-shaped ultrasonic concentrator is 8mm×8mm×5mm, the sound-absorbing material is brass, the piezoelectric ceramic size is 10mm×10mm, and the resonance frequency is 1MHz. The optical fibers used are all G.652.D single-mode optical fibers produced by Corning Corporation, and the tapered optical fiber in the acousto-optic voice channel coupler is made of single-mode optical fiber by flame heating and melting tapering.

[0034] When the driving frequency of the ultrasonic signal is 0.903MHz, for light with a wavelength of 1557nm, image 3 The output 1 po...

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Abstract

The invention relates to an all fiber delay line selector switch based on an acousto-optic function. The all fiber delay line transfer switch basically comprises a wedge ultrasonic transducer and a plurality of groups of acousto-optic voice path couplers, wherein the acousto-optic voice path couplers are sequentially connected and adopt ultrasonic drive. The all fiber delay line transfer switch has the advantages that the transfer of a single wavelength signal among different delay line output channels is realized by the all fiber structure; the cost is low, the response time is short, the insertion loss is small, the spectrum width is large, the structure is compact, and the number extension of delay lines is easy.

Description

technical field [0001] The invention relates to a novel all-fiber multi-channel optical switch based on acousto-optic interaction, which belongs to the field of optical communication and optical information processing. Background technique [0002] In the fields of optical communication and optical information processing, delay lines play a vital role [1], such as participating in signal transmission and modulation in optical sensing and measurement systems, realizing signal encoding and buffering in optical fiber communication systems, and in optical fiber communication systems. The precise control and phase distribution of microwave signals are realized in the optically controlled phased array radar system. Delay lines generally include fiber optic delay lines, surface acoustic wave delay lines, charge-coupled device delay lines, coaxial cable delay lines, magnetostatic wave delay lines, and superconducting delay lines [2-5]. Among them, the fiber delay line has the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/125G02B6/35
CPCG02F1/125
Inventor 高峰黄礼刚张国权许京军
Owner NANKAI UNIV
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