TY - CONF A1 - Sporea, D. A1 - Mihai, L. A1 - Negut, Daniel A1 - Stajanca, Pavol A1 - Krebber, Katerina ED - Kalli, K. ED - Mendez, A. T1 - On-line monitoring of gamma irradiated perfluorinated polymer optical fiber N2 - In this paper, we present the first results regarding the on-line monitoring of gamma-ray exposure effects on a commercial multi-mode perfluorinated polymer optical fiber (PF-POF), type GigaPOF-50SR from Chromis Fiberoptics. Our focus was to evaluate on-line the radiation induced attenuation (RIA) over a wide spectral range (320 nm – 1700 nm), in order to assess the fiber’s radiation hardness and its possible use in radiation detection. An Ocean Optics QE65000 high sensitivity spectrometer and a StellarNet near-IR spectrometer were used to cover the spectral ranges 200 nm – 1μm and 900 nm – 1.6 μm, respectively. Electron paramagnetic resonance was used to monitor the recovery of the irradiation induced centers at room temperature. The study indicated that the optical fiber can be used as radiation monitor at low dose rates by measuring the attenuation in the UV, while higher dose rates irradiation can be observed by RIA monitoring at specific wavelengths in the visible spectral range. T2 - Photonics Europe 2016, Micro-Structured and Specialty Optical Fibers IV CY - Brussels, Belgium DA - 03.04.2016 KW - electron paramagnetic resonance spectroscopy KW - Perfluorinated polymer optical fiber KW - radiation effects KW - gamma irradiation KW - radiation hardness KW - radiation induced attenuation KW - radiation dosimetry PY - 2016 DO - https://doi.org/10.1117/12.2230688 VL - 9886 SP - 98861Q-1 EP - 98861Q-6 PB - SPIE CY - Bellingham, USA AN - OPUS4-35927 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stajanca, Pavol A1 - Mihai, L. A1 - Sporea, D. A1 - Negut, D. A1 - Krebber, Katerina ED - Lewis, E. T1 - Perfluorinated polymer optical fiber for gamma radiation monitoring N2 - The sensitivity of low-loss perfluorinated polymer optical fiber (PF-POF) to gamma radiation is investigated for on-line radiation monitoring purposes. The radiation-induced attenuation (RIA) of a commercial PF-POF based on Cytop material is measured in the visible spectral region. The fiber RIA shows strong wavelength dependence with rapid increase towards the blue side of the spectrum. The wide range of radiation sensitivities is available via careful selection of appropriate monitoring wavelength. The accessible sensitivities span from 1.6 ± 0.2 dBm-1/kGy measured at 750 nm to 18.3 ± 0.7 dBm-1/kGy measured at 420 nm. The fairly high radiation sensitivity as well as its wide tunability makes the fiber a promising candidate for a broad range of applications. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 31.05.2016 KW - Perfluorinated polymer optical fiber KW - Cytop KW - gamma radiation KW - optical fiber sensors KW - radiation dosimetry PY - 2016 UR - http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2525047&resultClick=1 DO - https://doi.org/10.1117/12.2235528 VL - 9916 SP - 99160H-1 EP - 99160H-4 PB - SPIE CY - Bellingham, WA, USA AN - OPUS4-36461 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -