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A Bragg hollow core antiresonant fiber

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

Active Publication Date: 2022-05-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
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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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  • A Bragg hollow core antiresonant fiber
  • A Bragg hollow core antiresonant 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] Such as 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 eff...

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Abstract

The invention provides a Bragg hollow-core antiresonant optical fiber, which belongs to the technical field of microstructured optical fibers. This Braggian hollow-core antiresonant fiber includes a fiber support part, an optical fiber inner cladding and a fiber core. The fiber inner cladding and the fiber core are located inside the fiber support part. The fiber inner cladding includes several inner cladding units, and the inner cladding units between adjacent has air. The Bragg cladding of the present invention has strict periodicity in structural arrangement, the thickness of each quartz layer is consistent, and the thickness of the air layer is also consistent, forming a tight Bragg quartz air cladding, utilizing the anti-resonance effect of the quartz layer and The Bragg effect formed by the Bragg cladding composed of the quartz layer and air can greatly reduce the leakage of the fiber through the double effect, strictly confine the energy in the fiber core, and greatly reduce the loss of the fiber.

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 Patents(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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