14 December 2016 Fiber-optic seismometers for weak seismic signals registration
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Proceedings Volume 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics; 101760W (2016) https://doi.org/10.1117/12.2268285
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 2016, Khabarovsk, Russia
Abstract
The vertical and horizontal seismometers based on fiber-optic Mach-Zehnder interferometer are proposed and tested. The sensing element of seismometers is implemented as a multiturn optical fiber coil which allowed to obtain for vertical seismometer sensitivity to acceleration 10–7 m/s2 and for horizontal seismometer sensitivity to displacement 10-9 m . Stability of the seismometer operation is provided by feed-back control of the interferometer working point. The possibility of registration of weak seismic signals are demonstrated.
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Oleg T. Kamenev, Yuriy N. Kulchin, Yuriy S. Petrov, "Fiber-optic seismometers for weak seismic signals registration", Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 101760W (14 December 2016); doi: 10.1117/12.2268285; https://doi.org/10.1117/12.2268285
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