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Antiresonant hollow core preforms and optical fibres and methods of fabrication

A technology of hollow-core fiber and anti-resonance, which is applied in the direction of polarization fiber, cladding fiber, manufacturing tools, etc., and can solve the problems that optical performance cannot be realized.

Active Publication Date: 2020-05-01
UNIV OF SOUTHAMPTON
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the expected optical performance may not be achieved

Method used

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  • Antiresonant hollow core preforms and optical fibres and methods of fabrication
  • Antiresonant hollow core preforms and optical fibres and methods of fabrication
  • Antiresonant hollow core preforms and optical fibres and methods of fabrication

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Embodiment Construction

[0036] Aspects and features of certain examples and embodiments are discussed / described herein. Some aspects and features of certain examples and embodiments may be implemented conventionally and are not discussed / described in detail for the sake of brevity. Accordingly, it will be appreciated that aspects and features of the devices and methods discussed herein that are not described in detail can be implemented according to any conventional techniques for implementing such aspects and features.

[0037] Embodiments of the present disclosure relate to preforms for fabricating anti-resonant hollow core optical fibers configured to improve the relative positions of various components contained in an optical fiber drawn from the preform.

[0038] figure 1 A schematic cross-sectional view of an idealized antiresonant hollow-core fiber with a precise, symmetrical structure is shown. The cross-sectional arrangement of the components is preserved along the length of the fiber 10 (...

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Abstract

A preform (10) for an antiresonant hollow core optical fibre comprises an outer jacket tube (12) having an inner surface and a central longitudinal axis (24); a plurality of antiresonant cladding tubes (14) spaced apart at predefined peripheral locations around the inner surface of the outer jacket tube (12), each antiresonant cladding tube (14) in contact with the inner surface such that a central longitudinal axis (26) of each antiresonant cladding tube (14) is at a first radial distance from the central longitudinal axis (24) of the outer jacket tube (12); and a plurality of spacing elements (22) disposed alternately with the antiresonant cladding tubes (14) and each in contact with an outer surface of each of two adjacent antiresonant cladding tubes (14) at one or more contact points (28), the contact points (28) at a second radial distance from the central longitudinal axis (24) of the outer jacket tube (12), the second radial distance being greater than the first radial distance.

Description

technical field [0001] The present invention relates to optical fibers, in particular antiresonant hollow core optical fibers, and methods of making such optical fibers from preforms. Background technique [0002] Optical fibers include what are referred to as hollow fibers comprising a light-guiding core in the form of a central void surrounded by a cladding comprising a structured arrangement of longitudinal capillaries. Hollow core fibers can be classified according to their light guiding mechanism as: hollow photonic bandgap fibers, where the cladding includes a regular array of many capillaries from which the central group is excluded to define the core; antiresonant hollow core fibers, which include Negative curvature fibers, a subset of which have a smaller number of capillaries bonded to the inner surface of a larger jacket tube around a central space defining the core. [0003] So far, hollow photonic bandgap fibers have shown low optical transmission loss, althoug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/024
CPCG02B6/02328G02B6/02357G02B6/024C03B37/0122C03B2203/14C03B2203/16C03B2203/42C03B37/01208C03B37/01214C03B37/01242C03B37/0253
Inventor F·波莱蒂G·T·贾西恩N·惠勒T·D·布拉德利M·B·S·纳瓦祖丁J·海耶斯
Owner UNIV OF SOUTHAMPTON
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