Inscription of a fiber Bragg grating and a Fabry-Pérot interferometer on a MgO-doped optical fiber

Tiago Paixão, Luís Pereira, Rui Min, Wilfried Blanc, Daniele Tosi, Carlo Molardi, Carlos Marques, Paulo Fernando da Costa Antunes

2019

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DOI 10.1109/imoc43827.2019.9317604

Data confidence 85 high

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Abstract

In this paper, the fabrication of fiber Bragg gratings (FBGs) and intrinsic Fabry-Pérot interferometers (IFPIs) on a silica Mg-doped optical fiber is reported. The inscription of both sensing devices was performed by means of a femtosecond laser, using the phase mask method to inscribe the FBG and a micromachining platform for the IFPI. A thermal characterization was performed for both devices, achieving the maximum sensitivities of 9 pm/°C for the FBG and 10 pm/°C for the FPI.