Temperature compensated, humidity insensitive, high-Tg TOPAS FBGs for accelerometers and microphones

A. Stefani; W. Yuan; C. Markos; H. K. Rasmussen; S. Andresen; R. Guastavino; F. K. Nielsen; B. Rose; O. Jespersen; N. Herholdt-Rasmussen; O. Bang

doi:10.1117/12.977859

17 October 2012 Temperature compensated, humidity insensitive, high-T_g TOPAS FBGs for accelerometers and microphones

A. Stefani, W. Yuan, C. Markos, H. K. Rasmussen, S. Andresen, R. Guastavino, F. K. Nielsen, B. Rose, O. Jespersen, N. Herholdt-Rasmussen, O. Bang

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84210Y (2012) https://doi.org/10.1117/12.977859
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

In this paper we present our latest work on Fiber Bragg Gratings (FBGs) in microstructured polymer optical fibers (mPOFs) and their application as strain sensing transducers in devices, such as accelerometers and microphones. We demonstrate how the cross-sensitivity of the FBG to temperature is eliminated by using dual-FBG technology and how mPOFs fabricated from different grades of TOPAS with glass transition temperatures around 135°C potentially allow high-temperature humidity insensitive operation. The results bring the mPOF FBG closer to being a viable technology for commercial applications requiring high sensitivity due to the low Young's Modulus of polymer.

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A. Stefani, W. Yuan, C. Markos, H. K. Rasmussen, S. Andresen, R. Guastavino, F. K. Nielsen, B. Rose, O. Jespersen, N. Herholdt-Rasmussen, and O. Bang "Temperature compensated, humidity insensitive, high-T_g TOPAS FBGs for accelerometers and microphones", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84210Y (17 October 2012); https://doi.org/10.1117/12.977859

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