Fiber-top refractometer

C. J. Alberts, S. de Man, J. W. Berenschot, V. J. Gadgil, M. C. Elwenspoek, D. Iannuzzi

Research output: Contribution to JournalArticleAcademicpeer-review


We present a fiber-top device designed to measure variations of the refractive index of a liquid in which it is immersed. The sensitivity achieved with this first prototype is on the order of one part over 105 in a 30 kHz bandwidth. With a proper design, the device performs well also when immersed in liquids with refractive index equal to the refractive index of the core of the fiber.
Original languageEnglish
Number of pages34005
JournalMeasurement Science and Technology
Issue number3
Publication statusPublished - Mar 2009


  • fiber-top devices
  • refractometers
  • microelectromechanical systems


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