Using a Fiber Loop and Fiber Bragg Grating as a Fiber Optic Sensor to Simultaneously Measure Temperature and Displacement

作者：Chang Yao Tang; Yen Chih Ta; Wu Yue Shiun; Cheng Hsu Chih^*

来源：Sensors, 2013, 13(5): 6542-6551.

DOI：10.3390/s130506542

• fiber Bragg grating
• fiber loop
• temperature
• displacement

This study integrated a fiber loop manufactured by using commercial fiber (SMF-28, Corning) and a fiber Bragg grating (FBG) to form a fiber optic sensor that could simultaneously measure displacement and temperature. The fiber loop was placed in a thermoelectric cooling module with FBG affixed to the module, and, consequently, the center wavelength displacement of FBG was limited by only the effects of temperature change. Displacement and temperature were determined by measuring changes in the transmission of optical power and shifts in Bragg wavelength. This study provides a simple and economical method to measure displacement and temperature simultaneously.

• 出版日期2013-5