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Bragg type hollow-core anti-resonance optical fiber

An anti-resonance, optical fiber technology, applied in cladding optical fiber, microstructure optical fiber, light guide, etc., to achieve the effect of reducing optical fiber leakage, reducing optical fiber loss, and maintaining long-distance optical fiber drawing

Active Publication Date: 2021-10-19
SOUTH CHINA NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the loss and length of hollow-core anti-resonant fiber are still the main factors that limit its development and application.

Method used

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  • Bragg type hollow-core anti-resonance optical fiber
  • Bragg type hollow-core anti-resonance optical fiber

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Embodiment Construction

[0025] The following are specific embodiments of the present invention, and further describe the technical solution of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0026] like figure 1 As shown, the Bragging hollow-core antiresonant fiber includes a fiber support part 1, a fiber inner cladding 2 and a fiber core 3, the fiber inner cladding 2 and the fiber core 3 are located inside the fiber support part 1, and the fiber inner cladding 2 includes several inner claddings Unit 4, there is air between adjacent inner cladding units 4, and there is no connection point.

[0027] In this hollow-core antiresonant optical fiber, the core 3 is air, and the inner cladding unit 4 of the optical fiber inner cladding 2 can be alternately combined with quartz and air, thereby forming a Bragg cladding, and the Bragg cladding has a strict structural arrangement. Periodicity, using the anti-resonance effect...

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Abstract

The invention provides a Bragg type hollow-core anti-resonance optical fiber, which belongs to the technical field of microstructure optical fibers. The Bragg type hollow-core anti-resonance optical fiber comprises an optical fiber supporting part, an optical fiber inner cladding layer and a fiber core, the optical fiber inner cladding layer and the fiber core are located in the optical fiber supporting part, the optical fiber inner cladding layer comprises a plurality of inner cladding layer units, and air exists between the adjacent inner cladding layer units. The Bragg cladding has strict periodicity in structural arrangement, the thickness of each quartz layer is consistent, the thickness of each air layer is also consistent, a tight Bragg quartz air cladding is formed, the anti-resonance effect of the quartz layers and the Bragg effect formed by the Bragg cladding formed by the quartz layers and air are utilized, optical fiber leakage can be greatly reduced through double effects, energy is strictly limited in a fiber core, and optical fiber loss is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of microstructure optical fibers and relates to a Bragg hollow-core anti-resonant optical fiber. Background technique [0002] Since the first hollow-core bandgap fiber was born in 1999, the research on low-loss hollow-core fiber has been a research hotspot. However, due to the influence of the surface mode of the hollow-core bandgap fiber, the loss of the hollow-core bandgap fiber cannot be reduced to an ideal state. . Since the birth of the hollow-core anti-resonant fiber in 2011, people have become more enthusiastic about the research of the hollow-core fiber, and they are full of confidence in the application prospect of the hollow-core fiber. Optical fiber research continues to refresh records, and now the minimum loss of low-loss hollow-core optical fiber has dropped to 0.28dB / km, which is basically close to the loss of standard silica optical fiber, laying the foundation for its application. At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
CPCG02B6/02295G02B6/02304G02B6/02361G02B6/02076
Inventor 夏长明刘建涛周桂耀侯峙云
Owner SOUTH CHINA NORMAL UNIVERSITY
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