Terahertz polarization maintaining optical fiber and manufacturing method thereof

A technology for polarization-maintaining optical fiber and manufacturing method, which is applied in polarized optical fiber, cladding optical fiber, etc., and can solve problems such as weak wave binding ability and unfavorable wave stable transmission.

Inactive Publication Date: 2012-07-25
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another problem with terahertz high birefringence fibers is the weak bind...

Method used

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  • Terahertz polarization maintaining optical fiber and manufacturing method thereof
  • Terahertz polarization maintaining optical fiber and manufacturing method thereof
  • Terahertz polarization maintaining optical fiber and manufacturing method thereof

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Embodiment Construction

[0024] The present invention is further described below by way of examples.

[0025] The target wavelength is 300 μm. The target parameters to be achieved by the fiber are: the mode birefringence is 2×10 -2 , the loss is 2-5 dB / m. First, an elliptical substrate tube is prepared according to the set optical fiber structure parameters. Then, using SnCl with a mass concentration of 0.1% 2 The aqueous solution activates the surface of the inner wall of the hollow-core optical fiber substrate tube, and through this step, the speed of the next step of silver film deposition can be accelerated and the surface roughness of the silver film can be reduced; A layer of silver film is coated on the inner wall of the tube; finally, a resin solution with a certain concentration is obtained by using cyclohexane as a solvent for the resin particles. A peristaltic pump is used to make the resin solution flow through the silver-coated optical fiber at a certain speed, and the remaining liqui...

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Abstract

The invention belongs to the technical field of optoelectronic materials, and particularly relates to a terahertz polarization maintaining optical fiber and a manufacturing method of the terahertz polarization maintaining optical fiber. The terahertz polarization maintaining optical fiber is a medium/metal hollow optical fiber and is obtained by coating a metal film and a medium film on the inner wall of a base tube, the cross section of the terahertz polarization maintaining optical fiber is oval-shaped, and aperture size is determined according to the double refraction of a target and transmission loss, the ratio of an oval-shaped long shaft to an oval-shaped short shaft being 2:4, and the relationship between the double refraction and a normalization aperture. The optical fiber with the structure can obtain the double refraction in a 3*10<-2> mode and 2.4dB/m of absorption loss at 1THz (300mum).

Description

technical field [0001] The invention belongs to the technical field of optoelectronic materials, and in particular relates to a terahertz polarization-maintaining optical fiber structure and a manufacturing method thereof. Background technique [0002] The research on terahertz polarization-maintaining fiber is still in its infancy, and most of the literature is the result of theoretical research, and there are few terahertz polarization-maintaining fibers actually prepared. The asymmetry of the geometric structure is usually used to introduce birefringence, and the mode birefringence (phase birefringence) can reach 10 -2 Magnitude. The reported terahertz high birefringence fibers are mainly photonic crystal fibers, holey fibers and polymer tube fibers. Large transmission loss is one of the main problems of current terahertz polarization-maintaining fibers. In reported terahertz high-birefringence fibers, the loss is usually tens of dB / m. This is because most dielectric ...

Claims

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Application Information

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IPC IPC(8): G02B6/024
Inventor 汤晓黎孙帮山石艺尉
Owner FUDAN UNIV
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