High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability

Marcus Perry; Philip Orr; Pawel Niewczas; Michael Johnston

doi:10.1109/JLT.2013.2276391

High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability

Marcus Perry, Philip Orr, Pawel Niewczas, Michael Johnston

Electronic And Electrical Engineering

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

14 Citations (Scopus)

188 Downloads (Pure)

Abstract

A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept interrogation system was able to determine the absolute wavelength of Bragg peaks to within 20 pm (17 με). Static and dynamic Bragg grating strains were accurately demodulated in both absolute and relative wavelength measurement modes. This demonstration indicates that interferometric techniques are able to provide absolute, static and dynamic measurements of strain within a single platform.

Original language	English
Pages (from-to)	2897-2903
Number of pages	8
Journal	Journal of Lightwave Technology
Volume	31
Issue number	17
Early online date	2 Aug 2013
DOIs	https://doi.org/10.1109/JLT.2013.2276391
Publication status	Published - 13 Sep 2013

Keywords

bragg grating
calibrations
fibre optic sensors
light interferometry
static strain measurement

Access to Document

10.1109/JLT.2013.2276391

pre-printSubmitted manuscript, 533 KB

Cite this

@article{18517f2ec9b840d8a2d62104de5fc91d,

title = "High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability",

abstract = "A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept interrogation system was able to determine the absolute wavelength of Bragg peaks to within 20 pm (17 με). Static and dynamic Bragg grating strains were accurately demodulated in both absolute and relative wavelength measurement modes. This demonstration indicates that interferometric techniques are able to provide absolute, static and dynamic measurements of strain within a single platform.",

keywords = "bragg grating , calibrations, fibre optic sensors, light interferometry, static strain measurement",

author = "Marcus Perry and Philip Orr and Pawel Niewczas and Michael Johnston",

year = "2013",

month = sep,

day = "13",

doi = "10.1109/JLT.2013.2276391",

language = "English",

volume = "31",

pages = "2897--2903",

journal = "Journal of Lightwave Technology",

issn = "0733-8724",

publisher = "Optical Society of America",

number = "17",

}

TY - JOUR

T1 - High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability

AU - Perry, Marcus

AU - Orr, Philip

AU - Niewczas, Pawel

AU - Johnston, Michael

PY - 2013/9/13

Y1 - 2013/9/13

N2 - A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept interrogation system was able to determine the absolute wavelength of Bragg peaks to within 20 pm (17 με). Static and dynamic Bragg grating strains were accurately demodulated in both absolute and relative wavelength measurement modes. This demonstration indicates that interferometric techniques are able to provide absolute, static and dynamic measurements of strain within a single platform.

AB - A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept interrogation system was able to determine the absolute wavelength of Bragg peaks to within 20 pm (17 με). Static and dynamic Bragg grating strains were accurately demodulated in both absolute and relative wavelength measurement modes. This demonstration indicates that interferometric techniques are able to provide absolute, static and dynamic measurements of strain within a single platform.

KW - bragg grating

KW - calibrations

KW - fibre optic sensors

KW - light interferometry

KW - static strain measurement

U2 - 10.1109/JLT.2013.2276391

DO - 10.1109/JLT.2013.2276391

M3 - Article

VL - 31

SP - 2897

EP - 2903

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 17

ER -