Fiber optic displacement sensor with subangstrom resolution
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Updated: Jun 12, 2026
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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
Applied Optics
|June 18, 2010
Abstract:
A simple Fabry-Perot interferometer that uses a singlemode bidirectional fiber coupler as a beam splitter is described. With light from a high stability He-Ne laser focused on the optic fiber, noise levels of 0.5-A rms equivalent reflector displacements were obtained in a bandwidth of 0.02-1 kHz.
