公开(公告)号：US11965732B2

公开(公告)日：2024-04-23

申请号：US17177785

申请日：2021-02-17

Applicant: University of Southampton

Inventor： Christopher Holmes ,  Janice Barton ,  Daniel Bull

IPC: G01B11/16 ,  G02B6/124 ,  G02B6/13 ,  G02B6/12

CPC classification number: G01B11/168 ,  G01B11/165 ,  G02B6/124 ,  G02B6/13 ,  G02B2006/12107 ,  G02B2006/12138

Abstract: A method of measuring strain includes providing laminated material having ply layers, and a thickness along a direction orthogonal to the ply layers, and a strain sensor embedded between adjacent ply layers, wherein: the strain sensor includes first and second planar optical waveguide, each of the waveguides having a waveguiding core defining an optical propagation direction parallel to the laminated material and a Bragg grating in the waveguiding core, the optical propagation directions of the optical waveguides being non-parallel; interrogating the first optical waveguide Bragg grating with transverse electric (TE) and transverse magnetic (TM) polarized light, to obtain a TE spectral response and a TM spectral response; interrogating the second optical waveguide Bragg grating with TE and TM polarized light to obtain a TE spectral response and a TM spectral response; and processing the TE spectral responses and the TM spectral responses to extract a through-thickness component of strain.

公开(公告)号：US20170139133A1

公开(公告)日：2017-05-18

申请号：US15319964

申请日：2015-06-17

Applicant: University of Southampton

Inventor： Christopher Holmes ,  Peter George Robin Smith ,  James Christopher Gates ,  Lewis Glynn Carpenter

IPC: G02B6/122 ,  G02B6/36 ,  G02B6/34

Abstract: A method of forming an optical fibre assembly, comprises providing a planar substrate made of a first material; positioning an optical fibre with an outer layer of a first glass material on a surface of the substrate to form a pre-assembly; depositing a further glass material such as silica soot onto the pre-assembly, over at least a part of the optical fibre and adjacent parts of the substrate surface; and heating the pre-assembly to consolidate the further glass material into an amorphous volume in contact with at least parts of the surface of the substrate and the outer layer of the optical fibre, thereby bonding the optical fibre to the substrate to create the optical fibre assembly.

公开(公告)号：US10782473B2

公开(公告)日：2020-09-22

申请号：US15319964

申请日：2015-06-17

Applicant: University of Southampton

Inventor： Christopher Holmes ,  Peter George Robin Smith ,  James Christopher Gates ,  Lewis Glynn Carpenter

IPC: G02B6/36 ,  G02B6/122 ,  G02B6/34 ,  G02B6/12

Abstract: A method of forming an optical fibre assembly, comprises providing a planar substrate made of a first material; positioning an optical fibre with an outer layer of a first glass material on a surface of the substrate to form a pre-assembly; depositing a further glass material such as silica soot onto the pre-assembly, over at least a part of the optical fibre and adjacent parts of the substrate surface; and heating the pre-assembly to consolidate the further glass material into an amorphous volume in contact with at least parts of the surface of the substrate and the outer layer of the optical fibre, thereby bonding the optical fibre to the substrate to create the optical fibre assembly.