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Hollow-core anti-resonance optical fiber with ginkgo leaf-shaped cladding

A technology of ginkgo biloba and anti-resonance, applied in the direction of multi-layer core/cladding optical fiber, cladding optical fiber, light guide, etc., can solve the problem of high optical fiber loss, achieve small material dispersion influence, good single-mode transmission characteristics, and flat dispersion Effect

Active Publication Date: 2021-07-16
UNIV OF ELECTRONIC 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

Method used

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  • Hollow-core anti-resonance optical fiber with ginkgo leaf-shaped cladding
  • Hollow-core anti-resonance optical fiber with ginkgo leaf-shaped cladding
  • Hollow-core anti-resonance optical fiber with ginkgo leaf-shaped cladding

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Embodiment

[0026] figure 1 It is a schematic diagram of the cross-sectional structure of a hollow-core anti-resonant optical fiber with a ginkgo leaf-shaped cladding of the present invention.

[0027] In this embodiment, a hollow-core anti-resonant optical fiber with ginkgo biloba-shaped cladding has a structure such as figure 1 As shown, from the outside to the inside are the optical fiber outer tube 1, the ginkgo leaf-shaped cladding tube 2, and the air core 3.

[0028] The optical fiber outer tube 1 is the outermost layer of the hollow-core anti-resonance optical fiber, and wraps the ginkgo leaf-shaped cladding tube 2 and the air core 3 inside.

[0029] The ginkgo leaf-shaped cladding tube is usually made of silica and has a thickness of t. The design should follow the principle of anti-resonant reflective waveguide (ARROW), that is, satisfy:

[0030]

[0031] Among them, λ is the designed working wavelength, n 1 Indicates the refractive index of the ginkgo leaf-shaped cladding ...

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Abstract

The invention discloses a hollow-core anti-resonance optical fiber with a ginkgo leaf-shaped cladding. The hollow-core anti-resonance optical fiber sequentially comprises an optical fiber outer sleeve, ginkgo leaf-shaped cladding tubes and an air fiber core from outside to inside; the ginkgo-leaf-shaped cladding tubes meet the anti-resonance reflection waveguide (ARROW) principle in design and are specifically made of glass, the thickness of the ginkgo-leaf-shaped cladding tubes is t, the whole ginkgo-leaf-shaped cladding tubes are in a neat ginkgo leaf shape after winding and are specifically composed of a front arc section and two rear arc sections, the front arc section and the rear arc sections have negative curvature relative to the air fiber core and bend towards the outer side of the air fiber core; and the plurality of ginkgo leaf-shaped cladding tubes are fixed on the optical fiber outer sleeve in a rotational symmetry manner.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more specifically relates to a hollow-core anti-resonant optical fiber with ginkgo leaf-shaped cladding. Background technique [0002] Conventional solid-core optical fibers usually use a light-guiding mechanism of total internal reflection, so the core must use a material with a higher refractive index. The traditional solid-core silica fiber mainly made of silicon-based materials will produce extremely high absorption loss when transmitting mid-infrared light, while the laser damage threshold of sulfide fiber is low, and the material purification technology is not mature enough (Guo Haitao, Cui Jian, Xu Yantao, et al. .Research progress in the preparation and application of low-loss chalcogenide infrared optical fibers[J].Laser and Optoelectronics Progress, 2019,56(17):93-111.), fluoride optical fibers are prone to deliquescence and end-face damage (Jia Zhixu, Yao Chuanf...

Claims

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Application Information

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IPC IPC(8): G02B6/036G02B6/032
CPCG02B6/03694G02B6/032
Inventor 凌云罗素邱昆
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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