公开(公告)号：US20220373408A1

公开(公告)日：2022-11-24

申请号：US17767244

申请日：2020-10-08

Applicant: The University of Adelaide

Inventor： Stephen Christopher Warren-Smith ,  Heike Ebendorff-Heidepriem ,  Viet Linh Nguyen ,  Erik Peter Schartner

IPC: G01K11/3206 ,  G02B6/02

Abstract: A microstructured optical fiber sensor for sensing changes in a physical characteristic up to a predetermined temperature is disclosed. The sensor includes a microstructured optical fiber and a fiber Bragg grating formed in the microstructured optical fiber by generating a periodic modulation in the refractive index along a core region of the suspended core. The fiber Bragg grating is configured to produce a band reflection spectra including a fundamental mode and a plurality of higher order modes whose respective wavelengths vary in accordance with changes in the physical characteristic at the core region of the microstructured optical fiber. The microstructured optical fiber is configured to increase the confinement loss of the plurality of higher order modes of the band reflection spectra relative to the fundamental mode.

公开(公告)号：US12158377B2

公开(公告)日：2024-12-03

申请号：US17767244

申请日：2020-10-08

Applicant: The University of Adelaide

Inventor： Stephen Christopher Warren-Smith ,  Heike Ebendorff-Heidepriem ,  Viet Linh Nguyen ,  Erik Peter Schartner

IPC: G01K11/3206 ,  G02B6/02

Abstract: A microstructured optical fiber sensor for sensing changes in a physical characteristic up to a predetermined temperature is disclosed. The sensor includes a microstructured optical fiber and a fiber Bragg grating formed in the microstructured optical fiber by generating a periodic modulation in the refractive index along a core region of the suspended core. The fiber Bragg grating is configured to produce a band reflection spectra including a fundamental mode and a plurality of higher order modes whose respective wavelengths vary in accordance with changes in the physical characteristic at the core region of the microstructured optical fiber. The microstructured optical fiber is configured to increase the confinement loss of the plurality of higher order modes of the band reflection spectra relative to the fundamental mode.