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Proceedings Paper

Fiber Optic Seismic Sensor
Author(s): D. L. Gardner; S. L. Garrett
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Paper Abstract

A compact seismic sensor has been fabricated by supporting a seismic mass between two fiber-wrapped rubber mandrels which form the two arms of a Michelson interferometer. This sensor has a sensitivity of 104 raft below resonance and 3500 rad/gm above resonance, is easy to fabricate, easy to modifiy for other applications, uses less than fifteen meters of sensing fiber, and has a detection threshold limited by its own intrinsic thermal noise (= 2 μrad/√Hz below resonance) rather than the opto-electronic demodulator noise.

Paper Details

Date Published: 23 March 1988
PDF: 8 pages
Proc. SPIE 0838, Fiber Optic and Laser Sensors V, (23 March 1988); doi: 10.1117/12.942518
Show Author Affiliations
D. L. Gardner, Naval Postgraduate School (United States)
S. L. Garrett, Naval Postgraduate School (United States)


Published in SPIE Proceedings Vol. 0838:
Fiber Optic and Laser Sensors V
Ramon P. DePaula; Eric Udd, Editor(s)

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