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Optical fiber pressure sensor using extrinsic Fabry Perot interferometry ( EFPI); a theoretical study

HARRY RAMZA1,* , NORHANA ARSADb2, FAIZAR ABDURRAHMAN2, LATIFAH. S. SUPIAN1, MOHAMMAD SYUHAIMI AB-RAHMAN1

Affiliation

  1. Spectrum Technology Research Group, Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM-Bangi Campus,
  2. Laboratory of Photonics, Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM-Bangi Campus, Selangor, Malaysia

Abstract

This paper discuss the theoretical analysis and experimental results of pressure measurement using optical fiber sensor with cladding modification and coating with ZnO (Zinc Oxide as sensitive material to enhanced the performance of sensor that’s uses as sensing probe inside the pressure chamber. The modification fiber was coated by dip coating deposition method. During measurement of fiber sensor, the refractive index changes based on different pressure given. The changing of refractive index affects the phase different of optical path along optical fiber. Extrinsic Fabry – Perot Interferometer (EFPI) method is used to obtain the data measurement. Pressure variables prearranged from 0 to 104.8 mBar. The experiment outputs are intensity of reflection light and variety of pressure. The sensitivity of sensor obtained is 1.1% with swelling thickness from 0 to 1.181 m..

Keywords

Optical fiber pressure sensor, Extrinsic fabry-perot interferometer, Zinc-Oxide, cladding modification.

Submitted at: Feb. 9, 2015
Accepted at: May 7, 2015

Citation

HARRY RAMZA, NORHANA ARSADb, FAIZAR ABDURRAHMAN, LATIFAH. S. SUPIAN, MOHAMMAD SYUHAIMI AB-RAHMAN, Optical fiber pressure sensor using extrinsic Fabry Perot interferometry ( EFPI); a theoretical study, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 5-6, pp. 545-551 (2015)