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    Antiresonant hollow core preforms and optical fibres and methods of fabrication
    2.
    发明授权
    Antiresonant hollow core preforms and optical fibres and methods of fabrication 有权

    公开(公告)号：US11215751B2

    公开(公告)日：2022-01-04

    申请号：US16647118

    申请日：2018-09-11

    Applicant: University of Southampton

    Inventor： Francesco Poletti ,  Gregory Teofil Jasion ,  Natalie Wheeler ,  Thomas David Bradley ,  Mubassira B Syed Nawazuddin ,  John Hayes

    IPC: G02B6/02 ,  C03B37/012 ,  G02B6/024

    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.

    INTERFEROMETRIC FIBRE OPTIC GYROSCOPES USING HOLLOW CORE OPTICAL FIBRE AND METHODS THEREOF
    3.
    发明申请
    INTERFEROMETRIC FIBRE OPTIC GYROSCOPES USING HOLLOW CORE OPTICAL FIBRE AND METHODS THEREOF 有权

    公开(公告)号：US20230009601A1

    公开(公告)日：2023-01-12

    申请号：US17902274

    申请日：2022-09-02

    Applicant: University of Southampton

    Inventor： Austin Taranta ,  Eirc Numkam Fokoua ,  Francesco Poletti ,  David Neil Payne

    IPC: G02B6/02

    Abstract: An interferometric optical fibre sensor comprises optical fibre defining an optical circuit configured to propagate a first optical wave via an environment in which the optical fibre can be exposed to a stimulus that modifies the first optical wave, and a second optical wave, and to combine the first optical wave and the second optical wave to create an interference signal containing information about the stimulus, wherein optical fibre propagating either or both of the first optical wave and the second optical wave comprises hollow core optical fibre configured to propagate the optical wave or waves by an antiresonant optical guidance effect.

    Hollow core photonic bandgap optical fibres and methods of fabrication
    5.
    发明授权
    Hollow core photonic bandgap optical fibres and methods of fabrication 有权

    公开(公告)号：US11428865B2

    公开(公告)日：2022-08-30

    申请号：US16635200

    申请日：2018-08-01

    Applicant: University of Southampton

    Inventor： Gregory Teofil Jasion ,  Francesco Poletti ,  Yong Chen ,  Eric Rodrigue Numakm Fokoua ,  Thomas David Bradley

    IPC: G02B6/02 ,  C03B37/012 ,  C03B37/027

    Abstract: A hollow core photonic bandgap optical fibre comprises: a cladding comprising capillaries in a hexagonal array and a hollow core formed by excluding a hexagonal group of nineteen capillaries from the centre of the hexagonal array. The core is inflated. A core size ratio is 1.26 or above, defined as a ratio of the core diameter to the cladding diameter normalized to the ratio of the core diameter to the cladding diameter in an undistorted hexagonal array; a first ring ratio is between 0.55 and 2.50, defined as a ratio of the length of radially aligned struts separating the capillaries of the first ring to the length of a strut in an undistorted hexagonal array; and a core node spacing is between 0.60 and 1.90, where defined as a ratio of a strut length around the core of a largest corner capillary and a strut length around the core of a smallest side capillary. The fabrication method comprises four different pressures for the core, corner capillary, side capillary and cladding.

    Hollow-core optical fibers
    6.
    发明授权
    Hollow-core optical fibers 有权

    公开(公告)号：US10139560B2

    公开(公告)日：2018-11-27

    申请号：US15316566

    申请日：2015-06-08

    Applicant: University of Southampton

    Inventor： Francesco Poletti ,  Seyedmohammad Abokhamis Mousavi

    IPC: G02B6/02 ,  G02B6/255 ,  H01S3/16 ,  H01S3/067 ,  G02B6/024

    Abstract: An anti-resonant hollow-core fiber comprising a first tubular, cladding element which defines an internal cladding surface, a plurality of second tubular elements which are attached to the cladding surface and together define a core with an effective radius, the second tubular elements being arranged in spaced relation and adjacent ones of the second tubular elements having a spacing therebetween, and a plurality of third tubular elements, each nested within a respective one of the second tubular elements.

    Hollow core optical fibre
    8.
    发明授权
    Hollow core optical fibre 有权

    公开(公告)号：US11249250B2

    公开(公告)日：2022-02-15

    申请号：US17266685

    申请日：2019-07-31

    Applicant: University of Southampton

    Inventor： Gregory Teofil Jasion ,  Francesco Poletti

    IPC: G02B6/02 ,  G02B6/024 ,  G02B6/032 ,  C03B37/027

    Abstract: A hollow core optical fibre comprises a tubular jacket; a cladding comprising a plurality of primary capillaries spaced apart from one another in a ring and each bonded to an inner surface of the jacket at a peripheral location around the circumference of the jacket; and a hollow core formed by a central void within the ring of primary capillaries; wherein the cladding further comprises, within each primary capillary, two secondary capillaries and no more, the two secondary capillaries spaced apart from one another and each bonded to an inner surface of the primary capillary at an azimuthal location around the circumference of the primary capillary which is displaced from the peripheral location of the primary capillary.

    HOLLOW-CORE PHOTONIC BANDGAP FIBERS AND METHODS OF MANUFACTURING THE SAME
    10.
    发明申请
    HOLLOW-CORE PHOTONIC BANDGAP FIBERS AND METHODS OF MANUFACTURING THE SAME 审中-公开
    中空光子带光纤及其制造方法

    公开(公告)号：US20160236964A1

    公开(公告)日：2016-08-18

    申请号：US15023541

    申请日：2014-09-19

    Applicant: UNIVERSITY OF SOUTHAMPTON

    Inventor： Eric Rodrigue Numkam Fokoua ,  Francesco Poletti ,  David John Richardson ,  Yong Chen ,  Natalie Violet Wheeler ,  John Richard Hayes ,  Marco Petrovich

    IPC: C03B37/012 ,  C03B37/027 ,  G02B6/02

    CPC classification number: C03B37/0122 ,  C03B37/02781 ,  C03B2203/04 ,  C03B2203/16 ,  C03B2203/42 ,  G02B6/02328 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02371

    Abstract: A method of fabricating a hollow-core photonic-bandgap fiber, comprising the steps of: providing a stack of capillaries, wherein the stack has a hollow core and the capillaries at a boundary of the core comprise a plurality of first, corner core capillaries and a plurality of second, intermediate core capillaries; applying a pressure differential between the corner core capillaries and the intermediate core capillaries, whereby a size of the corner core capillaries can be controlled in relation to the intermediate core capillaries; and reducing the stack to a fiber, wherein the fiber has a hollow core and a cladding which surrounds the core at a core boundary and comprises a lattice or network of struts and interstitial nodes which together define an array of cavities.

    Abstract translation: 一种制造中空光子带隙光纤的方法，包括以下步骤：提供一堆毛细管，其中所述堆叠具有中空芯，并且所述芯的边界处的毛细管包括多个第一角芯芯毛细管和 多个第二中间核心毛细管; 在角落芯毛细管和中间核心毛细管之间施加压力差，由此相对于中间核心毛细管可以控制拐角芯毛细管的尺寸; 并且将所述堆叠减小到纤维，其中所述纤维具有中空芯和在芯边界处围绕所述芯的包层，并且包括一起限定空腔阵列的支柱和间隙节点的格子或网络。

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