Multiplexed interferometric displacement sensing below the laser frequency noise limit

Timothy T. Lam; Danielle M.R. Wuchenich; Jong H. Chow; David E. McClelland; Daniel A. Shaddock

doi:10.1117/12.899431

Multiplexed interferometric displacement sensing below the laser frequency noise limit

Timothy T. Lam, Danielle M.R. Wuchenich, Jong H. Chow, David E. McClelland, Daniel A. Shaddock

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

Abstract

The resolution of fiber optic interferometry sensors is often limited by frequency noise in the laser. For this reason, prestabilization techniques have been used to reduce laser frequency fluctuations and improve signal resolution. However, for multi-element systems this becomes cumbersome and difficult to implement. In this paper, we demonstrate the use of digitally-enhanced interferometry for the interrogation of a multi-element sensing system. Over 50 dB of cross-talk rejection was found, with displacement resolutions of ∼ 100 pm. Furthermore, using this technique, sub-frequency noise displacement resolution was obtained without the need for high performance sensors.

Original language	English
Title of host publication	21st International Conference on Optical Fiber Sensors
DOIs	https://doi.org/10.1117/12.899431
Publication status	Published - 2011
Event	21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada Duration: 15 May 2011 → 19 May 2011

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7753
ISSN (Print)	0277-786X

Conference

Conference	21st International Conference on Optical Fiber Sensors
Country/Territory	Canada
City	Ottawa, ON
Period	15/05/11 → 19/05/11

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10.1117/12.899431

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Lam, T. T., Wuchenich, D. M. R., Chow, J. H., McClelland, D. E., & Shaddock, D. A. (2011). Multiplexed interferometric displacement sensing below the laser frequency noise limit. In 21st International Conference on Optical Fiber Sensors Article 7753A4 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7753). https://doi.org/10.1117/12.899431

@inproceedings{8f8e09b5c36b482ea6adc885b8de2fd2,

title = "Multiplexed interferometric displacement sensing below the laser frequency noise limit",

abstract = "The resolution of fiber optic interferometry sensors is often limited by frequency noise in the laser. For this reason, prestabilization techniques have been used to reduce laser frequency fluctuations and improve signal resolution. However, for multi-element systems this becomes cumbersome and difficult to implement. In this paper, we demonstrate the use of digitally-enhanced interferometry for the interrogation of a multi-element sensing system. Over 50 dB of cross-talk rejection was found, with displacement resolutions of ∼ 100 pm. Furthermore, using this technique, sub-frequency noise displacement resolution was obtained without the need for high performance sensors.",

keywords = "Displacement sensing, laser frequency noise, multiplexing",

author = "Lam, \{Timothy T.\} and Wuchenich, \{Danielle M.R.\} and Chow, \{Jong H.\} and McClelland, \{David E.\} and Shaddock, \{Daniel A.\}",

year = "2011",

doi = "10.1117/12.899431",

language = "English",

isbn = "9780819482464",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "21st International Conference on Optical Fiber Sensors",

note = "21st International Conference on Optical Fiber Sensors ; Conference date: 15-05-2011 Through 19-05-2011",

}

Lam, TT, Wuchenich, DMR, Chow, JH, McClelland, DE & Shaddock, DA 2011, Multiplexed interferometric displacement sensing below the laser frequency noise limit. in 21st International Conference on Optical Fiber Sensors., 7753A4, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7753, 21st International Conference on Optical Fiber Sensors, Ottawa, ON, Canada, 15/05/11. https://doi.org/10.1117/12.899431

Multiplexed interferometric displacement sensing below the laser frequency noise limit. / Lam, Timothy T.; Wuchenich, Danielle M.R.; Chow, Jong H. et al.
21st International Conference on Optical Fiber Sensors. 2011. 7753A4 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7753).

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

TY - GEN

T1 - Multiplexed interferometric displacement sensing below the laser frequency noise limit

AU - Lam, Timothy T.

AU - Wuchenich, Danielle M.R.

AU - Chow, Jong H.

AU - McClelland, David E.

AU - Shaddock, Daniel A.

PY - 2011

Y1 - 2011

N2 - The resolution of fiber optic interferometry sensors is often limited by frequency noise in the laser. For this reason, prestabilization techniques have been used to reduce laser frequency fluctuations and improve signal resolution. However, for multi-element systems this becomes cumbersome and difficult to implement. In this paper, we demonstrate the use of digitally-enhanced interferometry for the interrogation of a multi-element sensing system. Over 50 dB of cross-talk rejection was found, with displacement resolutions of ∼ 100 pm. Furthermore, using this technique, sub-frequency noise displacement resolution was obtained without the need for high performance sensors.

AB - The resolution of fiber optic interferometry sensors is often limited by frequency noise in the laser. For this reason, prestabilization techniques have been used to reduce laser frequency fluctuations and improve signal resolution. However, for multi-element systems this becomes cumbersome and difficult to implement. In this paper, we demonstrate the use of digitally-enhanced interferometry for the interrogation of a multi-element sensing system. Over 50 dB of cross-talk rejection was found, with displacement resolutions of ∼ 100 pm. Furthermore, using this technique, sub-frequency noise displacement resolution was obtained without the need for high performance sensors.

KW - Displacement sensing

KW - laser frequency noise

KW - multiplexing

UR - https://www.scopus.com/pages/publications/79957983287

U2 - 10.1117/12.899431

DO - 10.1117/12.899431

M3 - Conference Paper

SN - 9780819482464

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - 21st International Conference on Optical Fiber Sensors

T2 - 21st International Conference on Optical Fiber Sensors

Y2 - 15 May 2011 through 19 May 2011

ER -

Multiplexed interferometric displacement sensing below the laser frequency noise limit

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