An In-Reflection Strain Sensing Head Based on a Hi-Bi Photonic Crystal Fiber

作者：Rota Rodrigo Sergio^*; Pinto Ana M R; Bravo Mikel; Lopez Amo Manuel

来源：Sensors, 2013, 13(7): 8095-8102.

DOI：10.3390/s130708095

• optical fiber sensor
• photonic crystal fiber
• strain sensor
• interferometry

A photonic crystal fiber-based sensing head is proposed for strain measurements. The sensor comprises a Hi-Bi PCF sensing head to measure interferometric signals in-reflection. An experimental background study of the sensing head is conducted through an optical backscatter reflectometer confirming the theoretical predictions, also included. A cost effective setup is proposed where a laser is used as illumination source, which allows accurate high precision strain measurements. Thus, a sensitivity of approximate to 7.96 dB/ms was achieved in a linear region of 1,200 epsilon.

• 出版日期2013-7