Conference paper
Temperature compensated, humidity insensitive, high-Tg TOPAS FBGs for accelerometers and microphones
Department of Photonics Engineering, Technical University of Denmark1
Fiber Sensors & Supercontinuum, Department of Photonics Engineering, Technical University of Denmark2
Singapore Institute of Manufacturing Technology3
University of Patras4
Department of Mechanical Engineering, Technical University of Denmark5
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark6
Brüel and Kjær Sound and Vibration Measurement A/S7
Ibsen Photonics A/S8
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 degrees 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.
| Language: | English |
|---|---|
| Publisher: | SPIE |
| Year: | 2012 |
| Proceedings: | 22nd International Conference on Optical Fiber Sensors (OFS 2012) |
| ISSN: | 1996756x and 0277786x |
| Types: | Conference paper |
| DOI: | 10.1117/12.977859 |
| ORCIDs: | Stefani, Alessio , Rasmussen, Henrik K. and Bang, Ole |
