title: High-Tg TOPAS microstructured polymer optical fiber for fiber Bragg grating strain sensing at 110 degrees.
abstract: We present the fabrication and characterization of fiber Bragg gratings (FBGs) in an endlessly single-mode microstructured polymer optical fiber (mPOF) made of humidity-insensitive high-Tg TOPAS cyclic olefin copolymer. The mPOF is the first made from grade 5013 TOPAS with a glass transition temperature of Tg = 135°C and we experimentally demonstrate high strain operation (2.5%) of the FBG at 98°C and stable operation up to a record high temperature of 110°C. The Bragg wavelengths of the FBGs are around 860 nm, where the propagation loss is 5.1 dB/m, close to the fiber loss minimum of 3.67 dB/m at 787 nm.
authors.affiliation: Department of Computer Engineering and Informatics, University of Patras, Patra 26500, Greece.
authors.forename: Christos
authors.initials: C
authors.lastname: Markos
authors.forename: Alessio
authors.initials: A
authors.lastname: Stefani
authors.forename: Kristian
authors.initials: K
authors.lastname: Nielsen
authors.forename: Henrik K
authors.initials: HK
authors.lastname: Rasmussen
authors.forename: Wu
authors.initials: W
authors.lastname: Yuan
authors.forename: Ole
authors.initials: O
authors.lastname: Bang
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D013696:Temperature; D014159:Transducers
chemical_list: D000475:Alkenes