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

Sensors

Sergio Rota-Rodrigo¹  Ana M. R. Pinto²  Mikel Bravo² 

[1] Department of Electric and Electronic Engineering, Universidad Pública de Navarra, Pamplona 31006, Spain;

关键词: optical fiber sensor;    photonic crystal fiber;    strain sensor;    interferometry;   

DOI  :  10.3390/s130708095

来源: mdpi

【 摘 要 】

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 ∼7.96 dB/ms was achieved in a linear region of 1,200 με.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.