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Updated: Jan 22, 2026

Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
CYTOP Fibre Bragg Grating Sensors for Harsh Radiation Environments
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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