Peer-Reviewed Journal Details
Mandatory Fields
Tian, K;Farrell, G;Yang, WL;Wang, XF;Lewis, E;Wang, PF
2018
October
Journal Of Lightwave Technology
Simultaneous Measurement of Displacement and Temperature Based on a Balloon-Shaped Bent SMF Structure Incorporating an LPG
Published
0 ()
Optional Fields
MACH-ZEHNDER INTERFEROMETER PERIOD FIBER GRATINGS REFRACTIVE-INDEX MODE FIBER SENSOR
36
4960
4966
A novel optical fiber sensor based on a balloon-shaped bent single-mode (BSBS) fiber structure incorporating a long-period grating (LPG) for simultaneous measurement of displacement and temperature is described and experimentally demonstrated. The sensor is fabricated by splicing a BSBS fiber structure based on a Mach-Zehnder interferometer (MZI) with a long-period grating (LPG). The interference dip formed by the BSBS fiber structure is sensitive to external displacement and temperature variation, while that formed by an LPG only depends on temperature, displacement, and temperature and, therefore, can he unambiguously and simultaneously measured by this sensor. Experimental results show that this sensor offers a high displacement sensitivity of -306 pm/mu m over the displacement range of 0-80 mu m and a temperature sensitivity of 42.9 pm/degrees C over the temperature range of 20-45 degrees C. Due to its high measurement sensitivities, low cost, and good repeatability, this sensor could be a realistic candidate for applications where displacement and temperature need to be measured simultaneously.
PISCATAWAY
0733-8724
10.1109/JLT.2018.2866488
Grant Details