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Hollow optical fiber with multiple resonance layers

A hollow-core optical fiber and multi-resonance technology, which is applied to clad optical fibers, multi-layer core/clad optical fibers, and light guides, can solve problems such as multi-clad modes and increase fiber cladding nodes, so as to reduce absorption loss and improve Damage threshold and the effect of reducing the difficulty of preparation

Active Publication Date: 2019-01-15
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology will increase the nodes in the fiber cladding, which will cause too many cladding modes. During the fiber preparation process, it needs to be precisely adjusted to avoid the influence of the cladding modes at the nodes.

Method used

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  • Hollow optical fiber with multiple resonance layers
  • Hollow optical fiber with multiple resonance layers
  • Hollow optical fiber with multiple resonance layers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The invention provides a multi-resonant layer hollow fiber, such as figure 1 As shown, it includes a high refractive index cladding region and a low refractive index core 3 region, the cladding region is composed of a negative curvature boundary region and a positive curvature boundary region, and the positive curvature boundary region wraps the negative curvature boundary area, the medium tube in the negative curvature boundary zone is the first type of medium tube 1, the medium tube in the positive curvature boundary zone is the second type of medium tube 2; the outermost layer of the medium tube in the first type of medium tube 1 The area surrounded by the outer wall of the second type of dielectric tube 2 and the inner wall of the innermost dielectric tube of the second type of dielectric tube is the area of ​​the fiber core 3 .

[0028] The first type of medium pipe 1 and the second type of medium pipe 2 are connected tangentially; the number of the first type of m...

Embodiment 2

[0030] The invention provides a multi-resonant layer hollow fiber, such as figure 2 As shown, it includes a high refractive index cladding region and a low refractive index core 3 region, the cladding region is composed of a negative curvature boundary region and a positive curvature boundary region, and the positive curvature boundary region wraps the negative curvature boundary area, the medium tube in the negative curvature boundary zone is the first type of medium tube 1, the medium tube in the positive curvature boundary zone is the second type of medium tube 2; the outermost layer of the medium tube in the first type of medium tube 1 The area surrounded by the outer wall of the second type of dielectric tube 2 and the inner wall of the innermost dielectric tube of the second type of dielectric tube is the area of ​​the fiber core 3 .

[0031] The first type of medium pipe 1 and the second type of medium pipe 2 are connected tangentially; the number of the first type of ...

Embodiment 3

[0034] The invention provides a multi-resonant layer hollow fiber, such as image 3 As shown, it includes a high refractive index cladding region and a low refractive index core 3 region, the cladding region is composed of a negative curvature boundary region and a positive curvature boundary region, and the positive curvature boundary region wraps the negative curvature boundary area, the medium tube in the negative curvature boundary zone is the first type of medium tube 1, the medium tube in the positive curvature boundary zone is the second type of medium tube 2; the outermost layer of the medium tube in the first type of medium tube 1 The area surrounded by the outer wall of the second type of dielectric tube 2 and the inner wall of the innermost dielectric tube of the second type of dielectric tube is the area of ​​the fiber core 3 .

[0035]The first type of medium pipe 1 and the second type of medium pipe 2 are connected in a tangential manner; the number of the first ...

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Abstract

The invention provides a hollow optical fiber with multiple resonance layers. The hollow optical fiber with multiple resonance layers comprises a high-refractive index cladding region and a low-refractive index fiber core region, wherein the cladding region is composed of a negative curvature boundary region and a positive curvature boundary region, the positive curvature boundary region coats thenegative curvature boundary region, a medium tube of the negative curvature boundary region is a first type medium tube, and the medium tube of the positive curvature boundary region is a second typemedium tube; and a region surrounded by an external wall of an outermost layer medium tube of the first type medium tubes and an inner wall of an innermost layer medium tube of the second type mediumtubes is a fiber core region. In the hollow optical fiber with multiple resonance layers provided by the invention, optical fiber modes are mainly distributed in air holes, thus, material absorptionloss of the optical fiber can be reduced effectively, a damage threshold value of the optical fiber can be improved, distance between an optical fiber node and the fiber core can be adjusted by increase of radius size of the medium tube in the negative curvature boundary cladding region, and by increase of the distance, coupling between a fiber core mode and a node mode can be reduced.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a multi-resonant layer hollow-core optical fiber. Background technique [0002] With the vigorous development of the global Internet, people have put forward higher and higher requirements for information transmission technology, which has caused a crisis of optical transmission capacity. Hollow-core fiber is expected to become an ideal optical transmission channel. The light field is mainly distributed in the hollow fiber core, which has great advantages in overcoming fiber loss, dispersion and nonlinear effects. [0003] Anti-resonant hollow-core fiber is a type of hollow-core fiber, F. Benabid et al. [F. Benabid, et al. "Stimulated Raman scattering in hydrogen-filled hollow-core photoniccrystal fiber," Science, 2002, 298(5592), 399 -402] proposed a hollow-core microstructured fiber with a Kagome cladding structure. By controlling the resonant coupling wavelength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/032G02B6/036
CPCG02B6/032G02B6/03616
Inventor 祝远锋叶志清饶春芳王祖俭
Owner JIANGXI NORMAL UNIV
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