Premium
Lateral and axial displacements measurement using fiber optic sensor based on beam‐through technique
Author(s) -
Yasin M.,
Harun S. W.,
Fawzi W. A.,
Ahmad H.
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24584
Subject(s) - core (optical fiber) , displacement (psychology) , sensitivity (control systems) , materials science , optics , fiber optic sensor , optical fiber , beam (structure) , dynamic range , microwave , voltage , electrical engineering , physics , electronic engineering , engineering , telecommunications , psychology , psychotherapist
Abstract The performance of the fiber‐optic displacement sensor with beam‐through detection technique is investigated. The effects of lateral and axial displacements on the detected output voltage are investigated for various core's diameters of the sensor. The highest sensitivity is obtained at 0.0008 mV/μm for the lateral displacement with core's diameters for both transmitting and receiving fibers are fixed at 0.5 mm. At present, the widest linear range is obtained at 3195 μm for the axial displacement with 1.0 mm core's diameters for both fibers. The highest resolution of the 13 μm is obtained with the lateral displacement sensor with 0.5 mm core diameter. The sensor with the smaller core shows a better sensitivity and resolution with the expense of the smaller linear range. The beam‐through sensors have a simple design, high degree of sensitivity and dynamic range, and low cost. These make the sensors are useful for microdisplacement measurement in the hazardous region. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2038–2040, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24584