Ultra-sensitive high aspect-ratio flexible optical fibers for multi-parameter high-resolution sensing
Ultra-sensitive high aspect-ratio flexible optical fibers for multi-parameter high-resolution sensing
A new class of optical fibers characterized by a high aspect ratio quadrilateral cross-section is introduced, termed high-aspect-ratio-flat-fiber (HARFF). HARFFs demonstrate superior performance in applications demanding an asymmetric, deterministic response, providing enhanced sensitivity, precision, and resilience. Using advanced laser-based processing combined with stack-and-draw fabrication, we engineered HARFFs with tailored mechanical properties, yielding ultra-sensitive pressure sensors with over three orders of magnitude improvement in sensitivity over conventional optical fiber designs. We demonstrated further sensitivity enhancement in HARFFs through a multi-material microstructure by achieving increased temperature sensitivity in Sn-alloy-filled HARFFs. Our findings highlight the transformative potential of HARFFs, opening new avenues for innovations in non-circular high aspect-ratio fiber optics.
Maniewski, Pawel
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Hartley, Robin
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Lee, Timothy
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Whitaker, Matthew
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Moog, Bruno
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Beresna, Martynas
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Dulieu-Barton, Janice
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Holmes, Christopher
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1 May 2025
Maniewski, Pawel
fb31e508-188a-4034-a236-dd0a473874d0
Hartley, Robin
ab481a5c-47e9-4fde-ba3b-8f15ec4acf1b
Lee, Timothy
7a3d744e-344c-49b6-998e-5dabcd8f2f3a
Whitaker, Matthew
4db53e39-c212-4fbb-a630-a9a6bdfd5c3a
Moog, Bruno
fb647fef-2caa-44b3-8157-2b141f5d8cf5
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Dulieu-Barton, Janice
7ef83648-cf9b-4675-92cf-1265dda508cb
Holmes, Christopher
2ec659eb-2bd3-460a-aa8d-5538eb1aeb25
[Unknown type: UNSPECIFIED]
Abstract
A new class of optical fibers characterized by a high aspect ratio quadrilateral cross-section is introduced, termed high-aspect-ratio-flat-fiber (HARFF). HARFFs demonstrate superior performance in applications demanding an asymmetric, deterministic response, providing enhanced sensitivity, precision, and resilience. Using advanced laser-based processing combined with stack-and-draw fabrication, we engineered HARFFs with tailored mechanical properties, yielding ultra-sensitive pressure sensors with over three orders of magnitude improvement in sensitivity over conventional optical fiber designs. We demonstrated further sensitivity enhancement in HARFFs through a multi-material microstructure by achieving increased temperature sensitivity in Sn-alloy-filled HARFFs. Our findings highlight the transformative potential of HARFFs, opening new avenues for innovations in non-circular high aspect-ratio fiber optics.
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Published date: 1 May 2025
Identifiers
Local EPrints ID: 510210
URI: http://eprints.soton.ac.uk/id/eprint/510210
PURE UUID: c42e8f94-98c8-4372-a5a6-616d0c928144
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Date deposited: 23 Mar 2026 17:33
Last modified: 24 Mar 2026 03:18
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Contributors
Author:
Pawel Maniewski
Author:
Robin Hartley
Author:
Timothy Lee
Author:
Matthew Whitaker
Author:
Bruno Moog
Author:
Martynas Beresna
Author:
Janice Dulieu-Barton
Author:
Christopher Holmes
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