Fiber-optic seismometer on the basis of Mach-Zehnder interferometer

•The seismometer based on fiber-optic Mach-Zehnder interferometer is proposed.•The multiturn sensing element allowed to obtain high responsivity.•Possibility of further increase of seismometer sensitivity is discussed. The seismometer based on fiber-optic Mach-Zehnder interferometer is proposed and...

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Bibliographic Details
Published in:	Sensors and actuators. A. Physical. Vol. 244; pp. 133 - 137
Main Authors:	Kamenev, Oleg T., Kulchin, Yuri N., Petrov, Yuri S., Khiznyak, Ruslan V., Romashko, Roman V.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 15-06-2016
Subjects:	Acceleration Actuators Coiling Fiber optics Fiber-optic sensor Mach-Zehnder interferometer Mach-Zehnder interferometers Optical fibers Seismometer Seismometers Vibration Mach-Zehnder interferometer Seismometer Fiber-optic sensor
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Summary:	•The seismometer based on fiber-optic Mach-Zehnder interferometer is proposed.•The multiturn sensing element allowed to obtain high responsivity.•Possibility of further increase of seismometer sensitivity is discussed. The seismometer based on fiber-optic Mach-Zehnder interferometer is proposed and tested. The sensing element of the seismometer is implemented as a multiturn optical fiber coil which allowed to obtain high responsivity to acceleration 6.1×103V/g in the frequency range 1–20Hz. Stability of the seismometer operation is provided by feed-back control of the interferometer working point. It is experimentally demonstrated that seismometer is able to reliably detect seismic vibration with acceleration amplitude at the level of 10−8g. Possibility of further increase of seismometer sensitivity is discussed.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0924-4247 1873-3069
DOI:	10.1016/j.sna.2016.04.006