Highly-sensitive passive integrated optical spiral-shaped waveguide refractometer

Veldhuis, GJ

doi:10.1063/1.120208

1997-11-17

PRE

Veldhuis, GJ *

Lambeck, PV

DOI：10.1063/1.120208

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摘要

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A passive integrated optical waveguide refractometer based on bendloss changes in a spiral-shaped channel waveguide is proposed and fabricated in Si3N4/SiO2 technology. The experimentally determined performance and the theoretical predictions, based on a simple model for so-called ''whispering gallery modes,'' agree very well. The minimum detectable refractive index change was measured to be Delta n=1.3x10(-5). (C) 1997 American Institute of Physics.

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