Measurement of small stress fluctuations in fused silica fibers using an optical microcavity sensor

I. A. Bilenko; A. Samoilenko; Vladimir S. Ilchenko

doi:10.1117/12.469491

6 June 2002 Measurement of small stress fluctuations in fused silica fibers using an optical microcavity sensor

I. A. Bilenko, A. Samoilenko, Vladimir S. Ilchenko

Proceedings Volume 4629, Laser Resonators and Beam Control V; (2002) https://doi.org/10.1117/12.469491
Event: High-Power Lasers and Applications, 2002, San Jose, California, United States

Abstract

We report on the measurement of small stress fluctuations in loaded fused silica fibers using high-Q optical microcavity sensor with whispering-gallery modes. Axial force applied to the spherical whispering-gallery mode microcavity by the fiber attached in the polar area displaced the frequencies of whispering-gallery mode resonances, and enabled high-sensitivity measurement of the stress force variations. With quality factor of integrated microcavity sensor of (2-7)x10⁷, the achieved spectral sensitivity of force measurement was <1x10^-8 N/(root)Hz in the 10²-10³ Hz frequency range and about 2x10^-10N/(root)Hz above 10⁴ Hz.

Citation Download Citation

I. A. Bilenko, A. Samoilenko, and Vladimir S. Ilchenko "Measurement of small stress fluctuations in fused silica fibers using an optical microcavity sensor", Proc. SPIE 4629, Laser Resonators and Beam Control V, (6 June 2002); https://doi.org/10.1117/12.469491

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