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9 December 1999 Fiber optic distance sensor with subangstrom resolution
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Herein describes a new light principle for measuring distances based on fiber optic technology. Measuring distances correlated with the amplitude of light signals in an optical fiber. Basics of this new measuring principle, main sources of errors, and distance resolution of this new method are herein described. The method's distance resolution is up to 0.01 - 0.001 Angstrom and theoretically is unlimited. Methods of experimental tests of distance resolution characteristics are described. The new measurement method is used for the construction of different sensors such as accelerometers, pressure sensors and microphones. The microphones based on the new measurement principle are produced industrially. Frequency range of the method is from DC up to 500 kHz. The new method may be used as a basis to construct a wide range of physical, chemical, bio-chemical, medical and other sensors.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexander Paritsky and Alexander Kots "Fiber optic distance sensor with subangstrom resolution", Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999);

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