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Partial fibre-optical passive tester and its application

A polarization-maintaining optical fiber and tester technology, which is applied to the field of testers for beat length parameters, and the field of polarization-maintaining optical fiber beat length testers, can solve problems such as inability to achieve, and achieve the effects of being easy to replace, not easy to break, and simple to adjust the optical path.

Inactive Publication Date: 2007-02-14
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In addition, in patents JP59-81523, JP59-126225, JP58-223032, EU0291962A2, EU0249923A2, and US6229599B1, methods such as observation method, wavelength scanning method, and time difference calculation are mentioned, which cannot achieve the purpose of the present invention

Method used

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  • Partial fibre-optical passive tester and its application
  • Partial fibre-optical passive tester and its application
  • Partial fibre-optical passive tester and its application

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Embodiment

[0056] Such as figure 1 As shown, the present invention consists of a liquid crystal touch display screen 1, precision micro-displacement control devices 3, 6, 7, pressure applying device 2, optical path system, optical fiber transmission polarization state direct coupling adjustment device 3, 12, light source driving module 5, signal processing The analysis and control system 8, the detector and optical power detection module 10, and the upper computer analysis and processing system 11 are composed.

[0057] The liquid crystal touch screen is used in the human-computer interaction platform to input control parameters and display measurement data and measurement results. It is connected to the signal processing analysis control system 8 through interfaces 24 and 16 . The pressure applying device 2 is connected with the lead screw nut 9 in the precision displacement control device. As the lead screw nut moves left and right, the optical fiber clamped between the bearing pairs ...

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Abstract

A beat tester of polarization preserving fiber is composed of accurate micro displacement control unit, signal pressing-analyzing control system, liquid touch screen display system, upper stream apparatus analysis- process system, direct -couple regulation unit of optical fiber transmission- polarization state, pressure exerting unit and light path system.

Description

technical field [0001] The invention relates to a polarization-maintaining optical fiber beat length tester, in particular to a tester for measuring the beat-length parameter of a polarization-maintaining optical fiber by using a pressure perturbation method, belonging to the fields of polarization-maintaining optical fiber testing and optical fiber sensing. Background technique [0002] The invention adopts the pressure perturbation method to measure the beat length parameter of the polarization maintaining optical fiber and to analyze its performance. The basic principle is that when linearly polarized light is incident at an angle of 45 degrees to the fast and slow axis of the polarization-maintaining fiber, due to the birefringence of the fiber, the transmitted light will form beats along the transmission direction and its optical power will change according to a certain period. The pressure perturbation is applied along the radial direction of the fiber, and it is displ...

Claims

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Application Information

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IPC IPC(8): G01M11/00G01N21/00
Inventor 张德生盛秋琴董孝义
Owner NANKAI UNIV
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