A stabilized fiber laser for high-resolution low-frequency strain sensing

Timothy T.Y. Lam; Jong H. Chow; Conor M. Mow-Lowry; David E. McClelland; Ian C.M. Littler

doi:10.1109/JSEN.2009.2024040

A stabilized fiber laser for high-resolution low-frequency strain sensing

Timothy T.Y. Lam, Jong H. Chow, Conor M. Mow-Lowry, David E. McClelland, Ian C.M. Littler

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Abstract

We frequency stabilize a fiber laser for use in low-frequency sensing applications. Using a radio frequency locking technique, an Erbium-doped single longitudinal mode fiber laser is stabilized to a Mach-Zehnder interferometer. The low-frequency fiber laser noise was suppressed by more than 1.5 orders of magnitude at frequencies below 300 Hz reaching a minimum of 2 Hz/√Hz between 60 and 250 Hz. The corresponding strain sensitivities are 2 p /√Hz at 1 Hz and 15 fε/√Hz from 60 to 250 Hz.

Original language	English
Article number	5159536
Pages (from-to)	983-986
Number of pages	4
Journal	IEEE Sensors Journal
Volume	9
Issue number	8
DOIs	https://doi.org/10.1109/JSEN.2009.2024040
Publication status	Published - Aug 2009

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abstract = "We frequency stabilize a fiber laser for use in low-frequency sensing applications. Using a radio frequency locking technique, an Erbium-doped single longitudinal mode fiber laser is stabilized to a Mach-Zehnder interferometer. The low-frequency fiber laser noise was suppressed by more than 1.5 orders of magnitude at frequencies below 300 Hz reaching a minimum of 2 Hz/√Hz between 60 and 250 Hz. The corresponding strain sensitivities are 2 p /√Hz at 1 Hz and 15 fε/√Hz from 60 to 250 Hz.",

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AU - Mow-Lowry, Conor M.

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AU - Littler, Ian C.M.

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AB - We frequency stabilize a fiber laser for use in low-frequency sensing applications. Using a radio frequency locking technique, an Erbium-doped single longitudinal mode fiber laser is stabilized to a Mach-Zehnder interferometer. The low-frequency fiber laser noise was suppressed by more than 1.5 orders of magnitude at frequencies below 300 Hz reaching a minimum of 2 Hz/√Hz between 60 and 250 Hz. The corresponding strain sensitivities are 2 p /√Hz at 1 Hz and 15 fε/√Hz from 60 to 250 Hz.

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JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

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A stabilized fiber laser for high-resolution low-frequency strain sensing

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