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Araneose hollow optical fiber

A technology of hollow-core optical fiber and spider web, which is applied in the direction of cladding optical fiber, optical waveguide and light guide, etc.

Inactive Publication Date: 2009-06-03
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned difficult problems encountered in the omnidirectional reflector composed of two materials, the present invention provides a spider web hollow core optical fiber, which uses a single material spider web cladding structure to replace the omnidirectional medium composed of two media Reflector hollow core fiber makes the material selection very flexible and convenient, increases the degree of freedom in process manufacturing, and is easy to realize mass production; and its transmission characteristics are basically the same as the omnidirectional reflector composed of two media

Method used

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Embodiment 1

[0018] In this embodiment, it is to realize as figure 2 A spider-web-like hollow-core fiber with the structure shown. Its parameter is n 1 = 1 (air), n 2 =1.49(PMMA), d 1 = 0.80 μm, d 2 =0.25μm, Λ=1.05μm, r 0 =10 μm, N=4, m=8 and 12, W s =0.25μm, the simulation results of its transverse component field distribution are shown in Figure 5 (m=8) and Image 6 (m=12).

Embodiment 2

[0020] In this embodiment, it is to realize as figure 2 Anti-resonant reflective spider web hollow core fiber with the structure shown. Its parameter is n 1 = 1 (air), n 2 =1.49(PMMA),d 1 = 1.50 μm, d 2 =2.266μm, Λ=3.766μm, r 0 =10μm, N=4, m=8, W s =0.30μm and 0.567μm, the simulation results of the transverse component field distribution are shown in Figure 8 (W s = 0.30μm) and Figure 9 (W s = 0.567um).

[0021] Except for the above two embodiments, the spider web hollow-core optical fiber structure proposed by the present invention is suitable for various Bragg hollow-core optical fibers and other optical fibers with reflective characteristics formed by two layers of high and low refractive index materials. This optical fiber structure is suitable for a wide variety of materials, such as plastics, multi-component glasses, various composite materials, and various media. Its manufacturing process is related to the materials used to form the spider web-shaped hollo...

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Abstract

The optical fiber is composed of fiber core area, coating layer and external coating layer. Characters are that the fiber core area is air; coating layer is in araneose structure including alternant layers between single material and air in concentric circles as well as support bars distributed on section symmetrically. The invention uses araneose coating structure of single material to replace hollow core fiber of all directional medium reflectors composed of two media. Transmission characteristics between the fiber produced from single material and fiber prepared from two media. Advantages are: increasing realizability, extending varieties available to be produced, and spectral range possible to be transmitted.

Description

technical field [0001] The invention relates to an optical fiber structure, in particular to an optical fiber with a spider web-shaped hollow core structure. Background technique [0002] The hollow-core fibers studied and reported in the past can generally be divided into two categories: photonic crystal fibers (photoniccrystal fibers) and Bragg (Bragg) fibers. The transmission loss of photonic crystal fiber and Bragg fiber composed of a single material decreases exponentially with the increase of the number of air holes in the cladding. If you want the leakage loss to be low enough, generally 7-9 turns are required. For photonic crystal fibers, in order to form a photonic band gap in the cladding, not only the microstructure of the cladding is required to have a strict periodic arrangement, but also a considerable air filling fraction is required. So far, hollow-core photonic crystal fibers made of quartz materials, 7 circles of pores, and a cladding with an air filling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02
Inventor 于荣金陈明阳
Owner YANSHAN UNIV
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