CYTOP Fibre Bragg Grating Sensors for Harsh Radiation Environments
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Updated: Jan 22, 2026

Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Christian Broadway1, Damien Kinet2, Antreas Theodosiou3
1Telecommunications and Electromagnetism Department, University of Mons, Blvd Dolez 31, 7000 Mons, Belgium. Christian.Broadway@umons.ac.be.
Abstract:
We present a polymer fibre Bragg grating sensor and its sensitivity to gamma radiation by observing the reflected spectral profile. The Bragg grating is femtosecond inscribed within a perfluorinated CYTOP fibre and the alteration of the Bragg wavelength corresponds to the total radiation dose received. Over a total dose of 41 k Gy, the fibre demonstrates a sensitivity of - 26.2 p m / k Gy and a resolution of 40 Gy. Under active consideration for the instrumentation of nuclear waste repositories, this study gives a better understanding of the effects of gamma radiation upon Bragg gratings in CYTOP fibres.
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