Document Type
Article
Rights
Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence
Abstract
An interrogation technique for fiber Bragg grating (FBG) strain sensors with dynamic temperature compensation using a single-multiple-single-mode (SMS) fiber filter as a temperature compensating element is presented. Experimental results show that this technique offers a resolution of better than 3:4 με for strain measurements in the range from 0 to 1667 με, and the temperature induced error is as low as 34 με in the temperature range from 10 to 60 °C. The temperature induced error could be further reduced if the temperature sensitivity (the rate of temperature induced wavelength shift) of the SMS filter was closer to that of the FBG sensor. This can be achieved by selecting a multimode fiber for the SMS filter with appropriate parameters. The proposed technique can be modified for simultaneous measurements of strain and temperature with an experimentally achieved resolution of better than 1 °C. © 2009 Optical Society of America Applied Optics, Vol.48, no. 29, p.5451
DOI
https://doi.org/10.1364/AO.48.005451
Recommended Citation
Wu, Q. et al (2009) Use of a Single-Multiple-Single-Mode Fiber Filter for Interrogating Fiber Bragg Grating Strain Sensors with Dynamic Temperature Compensation. Applied Optics, Vol.48, no. 29, p.5451. doi: 10.1364/AO.48.005451
Publication Details
Applied Optics, Vol.48, no. 29, p.5451