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1 February 2005 Temperature-compensated optical fiber Michelson refractometer
Adriaan Van Brakel, Pieter L. Swart
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Optical Engineering, Vol. 44, Issue 2, 020504 (February 2005). https://doi.org/10.1117/1.1850746
Abstract
Fiber optic interferometric refractometers usually possess large temperature sensitivities, especially those based on individual long-period gratings. This work introduces a compound-cavity Michelson interferometer that uses mode coupling in a long-period grating to establish the two optical paths in a single fiber, and therefore presents a compact sensor for in vivo refractive index measurement. Successful operation of the athermal refractometer was demonstrated experimentally by comparing its phase shift due to temperature-dependent changes of the refractive index of the analyte with refractive index readings from a temperature-controlled Abbe refractometer.
©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)
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Adriaan Van Brakel and Pieter L. Swart "Temperature-compensated optical fiber Michelson refractometer," Optical Engineering 44(2), 020504 (1 February 2005). https://doi.org/10.1117/1.1850746
Published: 1 February 2005
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Cited by 14 scholarly publications.
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KEYWORDS
Refractive index
Michelson interferometers
Phase shifts
Reflectivity
Cladding
Interferometry
Optical fibers
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