An Optical Fiber Refractometer

L. C. Bobb; H. D. Krumboltz; J. P. Davis

doi:10.1117/12.959989

19 January 1989 An Optical Fiber Refractometer

L. C. Bobb, H. D. Krumboltz, J. P. Davis

Proceedings Volume 0990, Chemical, Biochemical, and Environmental Applications of Fibers; (1989) https://doi.org/10.1117/12.959989
Event: O-E/Fiber LASE '88, 1988, Boston, MA, United States

Abstract

A step-indexed optical fiber is tapered to a diameter of one-third of the original diameter by heating under tension. Some of the cladding in the tapered region is removed by etching; and, this region is immersed in refractive index liquids in the range 1.33 to 1.65. The percentage of the light transmitted by the tapered section decreases as the index of refraction increases. Changes in index of refraction of 6x10-5 are measureable. The refractometer sensitivity may be optimized in the different index ranges by measuring the intensity in the various modal groups.

Citation Download Citation

L. C. Bobb, H. D. Krumboltz, and J. P. Davis "An Optical Fiber Refractometer", Proc. SPIE 0990, Chemical, Biochemical, and Environmental Applications of Fibers, (19 January 1989); https://doi.org/10.1117/12.959989

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