Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing

A. Bergman; T. Langer; M. Tur

doi:10.1117/12.2185279

Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing

A. Bergman, T. Langer, M. Tur

Tel Aviv University

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

3 Scopus citations

Abstract

The performance of an optical time-domain sensing technique, employing the slope of Brillouin dynamic gratings in polarization-maintaining fibers, can be significantly enhanced using Golay complementary sequences. The strain sensitivity of the reflectivity of a coded probe primarily depends on the detuning between the orthogonally polarized pumps, which generated the grating. The system broadband sensitivity for a 256 bit unipolar probe code was demonstrated to be 50nε/√Hz at a sampling rate of 2MHz, which to the best of our knowledge is a record sensitivity for Brillouin dynamic sensing. We report the measurement of 10kHz strain vibrations (which is the bandwidth limit of the vibration source) with a spatial resolution of 2cm. Owing to the system high sensitivity and spatial resolution, it has the potential to be used in distributed ultrasonic detection applications.

Original language	English
Title of host publication	Fifth Asia-Pacific Optical Sensors Conference, APOS 2015
Editors	Byoungho Lee, Yunjiang Rao, Sang Bae Lee
Publisher	SPIE
ISBN (Electronic)	9781628418651
DOIs	https://doi.org/10.1117/12.2185279
State	Published - 2015
Externally published	Yes
Event	5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of Duration: 20 May 2015 → 22 May 2015

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9655
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country/Territory	Korea, Republic of
City	Jeju
Period	20/05/15 → 22/05/15

Bibliographical note

Publisher Copyright:
© 2015 Copyright SPIE.

Keywords

Brillouin dynamic grating
Fiber-optic sensors
complementary-correlation coding
nonlinear optics

Access to Document

10.1117/12.2185279

Cite this

Bergman, A., Langer, T., & Tur, M. (2015). Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing. In B. Lee, Y. Rao, & S. B. Lee (Eds.), Fifth Asia-Pacific Optical Sensors Conference, APOS 2015 Article 96550V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9655). SPIE. https://doi.org/10.1117/12.2185279

Bergman, A. ; Langer, T. ; Tur, M. / Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing. Fifth Asia-Pacific Optical Sensors Conference, APOS 2015. editor / Byoungho Lee ; Yunjiang Rao ; Sang Bae Lee. SPIE, 2015. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "The performance of an optical time-domain sensing technique, employing the slope of Brillouin dynamic gratings in polarization-maintaining fibers, can be significantly enhanced using Golay complementary sequences. The strain sensitivity of the reflectivity of a coded probe primarily depends on the detuning between the orthogonally polarized pumps, which generated the grating. The system broadband sensitivity for a 256 bit unipolar probe code was demonstrated to be 50nε/√Hz at a sampling rate of 2MHz, which to the best of our knowledge is a record sensitivity for Brillouin dynamic sensing. We report the measurement of 10kHz strain vibrations (which is the bandwidth limit of the vibration source) with a spatial resolution of 2cm. Owing to the system high sensitivity and spatial resolution, it has the potential to be used in distributed ultrasonic detection applications.",

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doi = "10.1117/12.2185279",

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Bergman, A, Langer, T & Tur, M 2015, Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing. in B Lee, Y Rao & SB Lee (eds), Fifth Asia-Pacific Optical Sensors Conference, APOS 2015., 96550V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9655, SPIE, 5th Asia-Pacific Optical Sensors Conference, APOS 2015, Jeju, Korea, Republic of, 20/05/15. https://doi.org/10.1117/12.2185279

Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing. / Bergman, A.; Langer, T.; Tur, M.
Fifth Asia-Pacific Optical Sensors Conference, APOS 2015. ed. / Byoungho Lee; Yunjiang Rao; Sang Bae Lee. SPIE, 2015. 96550V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9655).

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

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AB - The performance of an optical time-domain sensing technique, employing the slope of Brillouin dynamic gratings in polarization-maintaining fibers, can be significantly enhanced using Golay complementary sequences. The strain sensitivity of the reflectivity of a coded probe primarily depends on the detuning between the orthogonally polarized pumps, which generated the grating. The system broadband sensitivity for a 256 bit unipolar probe code was demonstrated to be 50nε/√Hz at a sampling rate of 2MHz, which to the best of our knowledge is a record sensitivity for Brillouin dynamic sensing. We report the measurement of 10kHz strain vibrations (which is the bandwidth limit of the vibration source) with a spatial resolution of 2cm. Owing to the system high sensitivity and spatial resolution, it has the potential to be used in distributed ultrasonic detection applications.

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Bergman A, Langer T, Tur M. Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing. In Lee B, Rao Y, Lee SB, editors, Fifth Asia-Pacific Optical Sensors Conference, APOS 2015. SPIE. 2015. 96550V. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2185279

Slope-assisted complementary-correlation optical time-domain analysis of Brillouin dynamic gratings for high sensitivity, high spatial resolution, fast and distributed fiber strain sensing

Abstract

Publication series

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Bibliographical note

Keywords

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