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Device and method for measuring light polarization in nanofiber

A nano-fiber and light polarization technology, applied in the field of nano-fiber polarization measurement and control, can solve the problems of poor signal-to-noise ratio and low control accuracy.

Active Publication Date: 2021-05-14
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of low control precision and poor signal-to-noise ratio in the polarization measurement and control process of the existing nano-fiber, and to provide a device and method for measuring light polarization in the nano-fiber

Method used

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  • Device and method for measuring light polarization in nanofiber
  • Device and method for measuring light polarization in nanofiber
  • Device and method for measuring light polarization in nanofiber

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Embodiment

[0033] Such as figure 1 , figure 2 As shown, a device for measuring light polarization in a nanofiber includes a test laser 1, a half-wave plate 2, a fiber polarization controller 5, a fiber probe 8 and a photodetector 9, and the test laser 1 outputs laser light with a wavelength of 852nm in sequence Enter the nano-fiber 7 through the half-wave plate 2, the first common fiber 4, the fiber polarization controller 5 and the first tapered fiber 6, the fiber probe 8 is connected to the photodetector 9 through the second common fiber 13, and the fiber probe 8 The tip 10 is in contact with the surface of the nano-fiber 7, the evanescent field laser transmitted by the surface of the nano-fiber 7 is coupled into the fiber probe 8, and the ordinary fiber 4, the first tapered fiber 6 and the nano-fiber 7 are integrally formed.

[0034] The tip 10 of the fiber probe 8 is hemispherical, and a section of cylindrical optical fiber 11 is connected to the rear end of the tip 10 , and a seco...

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Abstract

The invention relates to a device and method for measuring light polarization in nanofibers, belonging to the technical field of nanofiber polarization measurement and control; the technical problem to be solved is to provide a low-cost, high-precision measurement and control method for measuring light polarization in nanofibers Device and method; the technical solution adopted to solve this technical problem is: the device for measuring the light polarization in the nanofiber includes a test laser, a half-wave plate, an optical fiber polarization controller, an optical fiber probe and a photodetector, and the laser output by the test laser passes through the Half-wave plate, ordinary optical fiber, optical fiber polarization controller and the first tapered optical fiber enter the nano-fiber, the fiber probe is connected with the photodetector through the common optical fiber, and the tip of the fiber probe is in contact with the surface of the nano-fiber; the present invention also provides The method for measuring the light polarization in the nanofiber by using the above-mentioned device; the invention can be widely used in the field of light polarization measurement in the nanofiber.

Description

technical field [0001] The invention discloses a device and method for measuring light polarization in a nanofiber, belonging to the technical field of nanofiber polarization measurement and control. Background technique [0002] Optical fiber waveguides not only have broad applications in network communication, medical treatment, optical fiber sensing and many important fields related to the national economy and people's livelihood, such as semiconductor industry, aerospace, national defense, but also have broad applications in semiconductor research, surface science, quantum physics, and the interaction between light and matter. Disciplines also play an important role. [0003] Step-type optical fiber waveguides generally consist of a high-refractive-index core and a low-refractive-index cladding. The laser is bound in the fiber core for transmission, and the fiber cladding plays a very good role in protecting the laser transmission, and the laser cannot be affected by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J4/00
CPCG01J4/00
Inventor 张鹏飞李刚张天才
Owner SHANXI UNIV
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