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Nested hollow-core anti-resonance optical fiber with crescent-shaped cladding

An anti-resonance, crescent-shaped technology, applied in the direction of multi-layer core/cladding optical fiber, cladding optical fiber, light guide, etc., can solve the problems of high fiber loss, not fully utilizing the advantages of negative curvature anti-resonant surface, etc., to achieve material dispersion Small influence, good single-mode transmission characteristics, flat dispersion effect

Active Publication Date: 2021-07-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the circular cladding tube hollow core antiresonant fiber with these two structural features, there are tube modes in the cladding tube, and these tube modes are mode-coupled with the fundamental mode in the fiber core, so that the fiber loss is still high
[0006] The common nested hollow-core anti-resonance fiber uses a circular cladding tube. The side close to the air core has a negative curvature, but the side away from the air core is still positive curvature, which does not fully utilize the negative curvature anti-resonance surface. Advantage

Method used

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  • Nested hollow-core anti-resonance optical fiber with crescent-shaped cladding
  • Nested hollow-core anti-resonance optical fiber with crescent-shaped cladding
  • Nested hollow-core anti-resonance optical fiber with crescent-shaped cladding

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Embodiment

[0029] figure 1 It is a schematic diagram of the cross-sectional structure of a nested hollow-core anti-resonant optical fiber with crescent-shaped cladding in the present invention.

[0030] In this embodiment, a crescent-shaped cladding nested hollow-core anti-resonant optical fiber has a structure such as figure 1 As shown, from the outside to the inside are the optical fiber outer tube 1, the cladding tube 2, and the air core 3.

[0031] The optical fiber outer tube 1 is the outermost layer of the hollow-core anti-resonant optical fiber, and wraps the cladding tube 2 and the air core 3 inside it.

[0032] The cladding tube includes a circular inner nesting cladding tube and a crescent-shaped outer cladding tube, the circular inner nesting cladding tube is suspended at the crescent position of the crescent-shaped outer cladding tube, and there is a certain gap and does not touch each other;

[0033] Wherein, the thickness of the circular inner nested cladding pipe 7 is t,...

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Abstract

The invention discloses a nested type hollow-core anti-resonance optical fiber with a crescent-shaped cladding. The nested type hollow-core anti-resonance optical fiber comprises an optical fiber outer sleeve, a circular nested cladding tube, crescent-shaped outer cladding tubes and an air fiber core from outside to inside in sequence; the circular embedded cladding tube and the crescent-shaped outer cladding tubes meet the anti-resonance reflection waveguide (ARROW) principle in design and are specifically made of silicon dioxide, and the thickness of the circular embedded cladding tube and the crescent outer cladding tubes is t; in the cladding region, a plurality of crescent cladding tubes with circular embedded sleeves are arranged at certain intervals in a surrounding manner to form the cladding region, and a central region surrounded by the boundary of the crescent cladding tubes is an air fiber core region.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more specifically relates to a crescent-shaped cladding nested hollow-core anti-resonant optical fiber. Background technique [0002] There are many types of hollow-core optical fibers, among which hollow-core antiresonant optical fibers have attracted extensive research by researchers because of their simple structure, flexible design, wide operating wavelength range, and superior loss, dispersion, and nonlinear performance. [0003] The cladding of the hollow-core anti-resonant optical fiber is generally composed of a circle of thin circular tubes that are kept at a certain distance from each other, called cladding tubes, and the cladding tubes are fixed on the outer sleeve of the optical fiber to stabilize the structure. Hollow-core anti-resonance fiber adopts the principle of anti-resonance reflection, so it has different transmission bands according to the thickness o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036G02B6/032
CPCG02B6/03694G02B6/032
Inventor 凌云罗素邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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