Title :
Photonic Crystal Fiber Interferometric Force Sensor
Author :
Villatoro, Joel ; Minkovich, Vladimir P. ; Zubia, Joseba
Author_Institution :
Dept. of Commun. Eng., Univ. of the Basque Country, Bilbao, Spain
Abstract :
A compellingly simple force sensor based on a photonic crystal fiber (PCF) mode interferometer is presented. A mechanical piece with grooves is used to convert the external force in localized pressure on the sensitive part of the interferometer. The localized pressure on the PCF causes attenuation losses to the interfering modes and makes the interference pattern to shrink. The changes of the interference pattern are quantified by means of Fourier transformation. In the sensing architecture here proposed, temperature or power fluctuations of the light source do not affect the measurement.
Keywords :
Fourier transform optics; fibre optic sensors; force sensors; holey fibres; light interferometers; light interferometry; optical fibre losses; photonic crystals; Fourier transformation; PCF; attenuation losses; interference pattern; interfering modes; interferometer; light source; localized pressure; photonic crystal fiber interferometric force sensor; power fluctuations; temperature fluctuations; Force; Interference; Optical fiber sensors; Optical fibers; Optical interferometry; Temperature measurement; Photonic crystal fiber interferometers; force sensor; mode interferometers; optical fiber sensor; optical fiber sensors; pressure sensor;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2411312
