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The work entitled “Probing the ultimate limit of fiber-optic strain sensing” has been published on Science Express, (the publication on Science is expected to be on November 2010).
\nPublished Online October 28, 2010
\nScience DOI: 10.1126\/science.1195818
\nStrain measurements are crucial in several fields for both applied and fundamental research, spanning from structural engineering to aerospace, from geophysics to nanotechnology,
\nup to the ultrasensitive gravitational wave detectors, complex long baseline interferometers (3-4 km arm length).
\nOn smaller scales, of the order of centimeters, fiber-optic sensors are widespread tools for high sensitivity measurements.
\nThe paper shows the development of a fiber-optic strain sensor based on a Bragg-grating resonator with a diode laser source that is stabilized against a quartz-disciplined optical frequency comb, thereby approaching detection limits set by thermodynamic phase fluctuations in the fiber.
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