High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry

A. Bergman; T. Langer; M. Tur

doi:10.1117/12.2236815

High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry

A. Bergman, T. Langer, M. Tur

Tel Aviv University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present a novel fiber-optic sensing technique based on the distributed measurement of Brillouin-induced phase-shift in the reflection from Brillouin dynamic gratings in polarization-maintaining fibers. Subject to signal to noise considerations, the strain sensitivity of the phase-shift in the reflection of a pulsed probe, orthogonally polarized to the gratings-generating pumps, is independent of the pulse width, suggesting the potential to achieve higher spatial resolutions than those offered by slope-assisted, phasorial Brillouin sensing techniques in standard single-mode fibers. We report the measurement of 500Hz strain vibrations (at a sampling rate of 1MHz) with a spatial resolution of 20cm.

Original language	English
Title of host publication	Sixth European Workshop on Optical Fibre Sensors
Editors	Elfed Lewis
Publisher	SPIE
ISBN (Electronic)	9781510602199
DOIs	https://doi.org/10.1117/12.2236815
State	Published - 2016
Externally published	Yes
Event	6th European Workshop on Optical Fibre Sensors - Limerick, Ireland Duration: 31 May 2016 → 3 Jun 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9916
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	6th European Workshop on Optical Fibre Sensors
Country/Territory	Ireland
City	Limerick
Period	31/05/16 → 3/06/16

Bibliographical note

Publisher Copyright:
© 2016 SPIE.

Funding

This research was supported in part by the Israel Science Foundation (grant No. 1380/12).

Funders	Funder number
Israel Science Foundation	1380/12

Keywords

Brillouin dynamic gratings
Fiber-optic sensors
Heterodyne detection

Access to Document

10.1117/12.2236815

Cite this

Bergman, A., Langer, T., & Tur, M. (2016). High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry. In E. Lewis (Ed.), Sixth European Workshop on Optical Fibre Sensors Article 99162Z (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9916). SPIE. https://doi.org/10.1117/12.2236815

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abstract = "We present a novel fiber-optic sensing technique based on the distributed measurement of Brillouin-induced phase-shift in the reflection from Brillouin dynamic gratings in polarization-maintaining fibers. Subject to signal to noise considerations, the strain sensitivity of the phase-shift in the reflection of a pulsed probe, orthogonally polarized to the gratings-generating pumps, is independent of the pulse width, suggesting the potential to achieve higher spatial resolutions than those offered by slope-assisted, phasorial Brillouin sensing techniques in standard single-mode fibers. We report the measurement of 500Hz strain vibrations (at a sampling rate of 1MHz) with a spatial resolution of 20cm.",

keywords = "Brillouin dynamic gratings, Fiber-optic sensors, Heterodyne detection",

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note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; 6th European Workshop on Optical Fibre Sensors ; Conference date: 31-05-2016 Through 03-06-2016",

year = "2016",

doi = "10.1117/12.2236815",

language = "אנגלית",

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Bergman, A, Langer, T & Tur, M 2016, High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry. in E Lewis (ed.), Sixth European Workshop on Optical Fibre Sensors., 99162Z, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9916, SPIE, 6th European Workshop on Optical Fibre Sensors, Limerick, Ireland, 31/05/16. https://doi.org/10.1117/12.2236815

High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry. / Bergman, A.; Langer, T.; Tur, M.
Sixth European Workshop on Optical Fibre Sensors. ed. / Elfed Lewis. SPIE, 2016. 99162Z (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9916).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - We present a novel fiber-optic sensing technique based on the distributed measurement of Brillouin-induced phase-shift in the reflection from Brillouin dynamic gratings in polarization-maintaining fibers. Subject to signal to noise considerations, the strain sensitivity of the phase-shift in the reflection of a pulsed probe, orthogonally polarized to the gratings-generating pumps, is independent of the pulse width, suggesting the potential to achieve higher spatial resolutions than those offered by slope-assisted, phasorial Brillouin sensing techniques in standard single-mode fibers. We report the measurement of 500Hz strain vibrations (at a sampling rate of 1MHz) with a spatial resolution of 20cm.

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High spatial resolution, dynamic, and distributed fiber optic strain sensing based on phasorial Brillouin dynamic gratings reflectometry

Abstract

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Keywords

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