Fabrication and characterization of polycarbonate microstructured polymer optical fibers for high-temperature-resistant fiber Bragg grating strain sensors

Andrea Fasano, Getinet Woyessa, Pavol Stajanca, Christos Markos, Alessio Stefani, Kristian Nielsen, Henrik K. Rasmussen, Katerina Krebber, Ole Bang

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Here we present the fabrication of a solid-core microstructured polymer optical fiber (mPOF) made of polycarbonate (PC), and report the first experimental demonstration of a fiber Bragg grating (FBG) written in a PC optical fiber. The PC used in this work has a glass transition temperature of 145°C. We also characterize the mPOF optically and mechanically, and further test the sensitivity of the PC FBG to strain and temperature. We demonstrate that the PC FBG can bear temperatures as high as 125°C without malfunctioning. In contrast, polymethyl methacrylate-based FBG technology is generally limited to temperatures below 90°C.
Original languageEnglish
JournalOptical Materials Express
Issue number2
Pages (from-to)649-659
Publication statusPublished - 2016

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