Analysis of Photonic Crystal Fiber-Based Micro-Strain Sensor
Photonics crystal fiber-based sensors have small size, high sensitivity, flexibility, robustness, and ability of remote sensing. They can be used in unfavorable environmental conditions such as strong electromagnetic field, nuclear radiation, noise, and high voltages for explosive or corrosive media at high temperature. Fabrication of these sensors is so simple, and altogether makes them as a very efficient sensing solution for medical and industrial applications. A simple configuration of hollow-core photonic crystal fiber (HC-PCF) is presented for application as a micro-strain sensor to exhibit better sensitivity then the typical fiber Bragg grating (FBG)-based fiber optic strain sensors. Also, cross-sensitivity to changes in surrounding refractive index is avoided. The performance of the designed sensor is investigated for different strain levels ranging from 0 to 2000 µɛ at the wavelength, 1550 nm. Additionally, due to the air-hole structure of HC-PCF, the sensitivity of strain measurement remains unaffected of the changes in surrounding refractive index (SRI). Sensitivity of HC-PCF also depends on the fiber parameters like pitch and air-filling fraction.
KeywordsPhotonic crystal Fiber Bragg grating Sensitivity Strain measurement
- 2.Serker, N. H. M. K. (2010). Structural health monitoring using static and dynamic strain data from long-gage distributed FBG sensor. In IABSE-JSCE Joint Confrence on Advances in Bridge Engineering-II, Dhaka, Bangladesh.Google Scholar
- 3.Nidhi, R. S. K., & Kapur, P. (2014). Enhancement of sensitivity of the refractive index using ITO coating on LPG. Journal of Optoelectronics and Advanced Materials, 8(1–2), 45–48.Google Scholar
- 12.Rajan, G. (2015). Introduction to optical fiber sensors. In Optical fiber sensors: Advanced techniques and applications (pp. 1–12). CRC press.Google Scholar
- 13.Cerqueira, S. A. (2010). Recent progress and novel applications of photonic crystal fibers. Reports on Progress in Physics, 73(2), 1–21.Google Scholar