Miniaturised gap sensor using fibre optic Fabry-Pérot interferometry for structural health monitoring

Tamer Y. Cosgun; Adrian Dzipalski; Calum A. Ross; Robert R. Thomson; Matthew Kingston; Simon Brooks; William N. MacPherson

doi:10.1364/OE.462070

Miniaturised gap sensor using fibre optic Fabry-Pérot interferometry for structural health monitoring

Tamer Y. Cosgun^*, Adrian Dzipalski, Calum A. Ross, Robert R. Thomson, Matthew Kingston, Simon Brooks, William N. MacPherson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

61 Downloads (Pure)

Abstract

A miniaturised structural health monitoring device has been developed capable of measuring the absolute distance between close parallel surfaces using Fabry-Pérot interferometry with nm-scale sensitivity. This is achieved by fabricating turning mirrors on two opposite cores of a multi-core fibre to produce a probe with dimensions limited only be the fibre diameter. Two fabrication processes have been investigated: Focused ion beam milling, which has resulted in a sensor measurement accuracy, sensitivity and range of ±0.056 µm, ±0.006 µm and ∼16000 µm respectively; and ultrafast laser assisted etching of the cleaved fibre end, where a sensor measurement accuracy, sensitivity and range of ±0.065 µm, ±0.006 µm and ∼7500 µm have been demonstrated.

Original language	English
Pages (from-to)	42923-42932
Number of pages	10
Journal	Optics Express
Volume	30
Issue number	24
Early online date	7 Nov 2022
DOIs	https://doi.org/10.1364/OE.462070
Publication status	Published - 21 Nov 2022

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1364/OE.462070

Download pdf
© 2022 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Final published version, 4.06 MB

Cite this

@article{5218367e8211424fb607b61341032167,

title = "Miniaturised gap sensor using fibre optic Fabry-P{\'e}rot interferometry for structural health monitoring",

abstract = "A miniaturised structural health monitoring device has been developed capable of measuring the absolute distance between close parallel surfaces using Fabry-P{\'e}rot interferometry with nm-scale sensitivity. This is achieved by fabricating turning mirrors on two opposite cores of a multi-core fibre to produce a probe with dimensions limited only be the fibre diameter. Two fabrication processes have been investigated: Focused ion beam milling, which has resulted in a sensor measurement accuracy, sensitivity and range of ±0.056 µm, ±0.006 µm and ∼16000 µm respectively; and ultrafast laser assisted etching of the cleaved fibre end, where a sensor measurement accuracy, sensitivity and range of ±0.065 µm, ±0.006 µm and ∼7500 µm have been demonstrated.",

author = "Cosgun, {Tamer Y.} and Adrian Dzipalski and Ross, {Calum A.} and Thomson, {Robert R.} and Matthew Kingston and Simon Brooks and MacPherson, {William N.}",

note = "Funding Information: Engineering and Physical Sciences Research Council Equipment Fund (EP/J015040/1) and Centre for Doctoral Training in Applied Photonics (EP/L01596X/1); Atomic Weapons Establishment. Publisher Copyright: {\textcopyright} 2022 OSA - The Optical Society. All rights reserved.",

year = "2022",

month = nov,

day = "21",

doi = "10.1364/OE.462070",

language = "English",

volume = "30",

pages = "42923--42932",

journal = "Optics Express",

issn = "1094-4087",

publisher = "OSA Publishing",

number = "24",

}

TY - JOUR

T1 - Miniaturised gap sensor using fibre optic Fabry-Pérot interferometry for structural health monitoring

AU - Cosgun, Tamer Y.

AU - Dzipalski, Adrian

AU - Ross, Calum A.

AU - Thomson, Robert R.

AU - Kingston, Matthew

AU - Brooks, Simon

AU - MacPherson, William N.

N1 - Funding Information: Engineering and Physical Sciences Research Council Equipment Fund (EP/J015040/1) and Centre for Doctoral Training in Applied Photonics (EP/L01596X/1); Atomic Weapons Establishment. Publisher Copyright: © 2022 OSA - The Optical Society. All rights reserved.

PY - 2022/11/21

Y1 - 2022/11/21

N2 - A miniaturised structural health monitoring device has been developed capable of measuring the absolute distance between close parallel surfaces using Fabry-Pérot interferometry with nm-scale sensitivity. This is achieved by fabricating turning mirrors on two opposite cores of a multi-core fibre to produce a probe with dimensions limited only be the fibre diameter. Two fabrication processes have been investigated: Focused ion beam milling, which has resulted in a sensor measurement accuracy, sensitivity and range of ±0.056 µm, ±0.006 µm and ∼16000 µm respectively; and ultrafast laser assisted etching of the cleaved fibre end, where a sensor measurement accuracy, sensitivity and range of ±0.065 µm, ±0.006 µm and ∼7500 µm have been demonstrated.

AB - A miniaturised structural health monitoring device has been developed capable of measuring the absolute distance between close parallel surfaces using Fabry-Pérot interferometry with nm-scale sensitivity. This is achieved by fabricating turning mirrors on two opposite cores of a multi-core fibre to produce a probe with dimensions limited only be the fibre diameter. Two fabrication processes have been investigated: Focused ion beam milling, which has resulted in a sensor measurement accuracy, sensitivity and range of ±0.056 µm, ±0.006 µm and ∼16000 µm respectively; and ultrafast laser assisted etching of the cleaved fibre end, where a sensor measurement accuracy, sensitivity and range of ±0.065 µm, ±0.006 µm and ∼7500 µm have been demonstrated.

UR - http://www.scopus.com/inward/record.url?scp=85142075254&partnerID=8YFLogxK

U2 - 10.1364/OE.462070

DO - 10.1364/OE.462070

M3 - Article

C2 - 36523002

AN - SCOPUS:85142075254

SN - 1094-4087

VL - 30

SP - 42923

EP - 42932

JO - Optics Express

JF - Optics Express

IS - 24

ER -

Miniaturised gap sensor using fibre optic Fabry-Pérot interferometry for structural health monitoring

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this