Premium
Displacement sensing with two asymmetrical inclined fibers
Author(s) -
Yang H. Z.,
Harun S. W.,
Ahmad H.
Publication year - 2010
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.25173
Subject(s) - inclination angle , displacement (psychology) , optics , sensitivity (control systems) , materials science , modulation (music) , optical fiber , microwave , fiber optic sensor , linear range , range (aeronautics) , geometry , physics , acoustics , engineering , mathematics , telecommunications , composite material , electronic engineering , psychology , statistics , detection limit , psychotherapist
Fiber optic displacement sensor (FODS) with two asymmetrical inclined fibers is demonstrated using an intensity modulation technique. Compared to the sensor with two symmetrical inclined fibers, the sensitivities of proposed FODS are improved by 64.7%, 40.8%, and 31.8% at inclination angles of 10°, 20°, and 30°, respectively. The analysis also shows that the increment of inclination angle increases the output sensitivity but reduces the linear range of the sensor. Compared to the case of parallel fibers, sensitivity can be improved by 3.6, 8.5, and 16 times for inclination angles of 10°, 20°, and 30° respectively. However, the corresponding linear ranges are decreased by 67%, 55%, and 33% for inclination angles of 10°, 20°, and 30°, respectively. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1271–1274, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25173