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Date of Publication:2022-10-09

Journal:光电子 激光

Volume:23

Issue:8

Page Number:1431-1435

ISSN No.:1005-0086

Abstract:Magnetic resonance imaging(MRI) compatible tactile sensor has a
   practical significance in clinical medicine.In this paper,based on
   extrinsic Fabry-Perot(F-P) interferometric(EFPI) principle,an optical
   fiber tactile sensor with MRI-compatible ability is designed.In the
   tactile sensing system the force is exerted on the sensor by spiral
   micro-control device.Interference spectra of the F-P sensor are measured
   by means of the optical spectrum analyzer(OSA) and gap lengths of the
   EFPI sensor are achieved with the cross correlation calculation.At the
   same time,the calibration of the sensor is conducted by FS20 series
   force sensor.The performance of the sensor is analyzed,its measurement
   range is 0-3 N and resolution is 0.02 nm.Multiple measurements show that
   experimental results are in good agreements with the theoretical
   results.

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