Numerical modeling of a novel athermal fiber optic cable

Luca Schenato; Pedro J. Vidal-Moreno; Marco Santagiustina; Andrea Galtarossa; Luca Palmieri; Efren Diez-Jimenez; Sonia Martin-Lopez; Miguel Gonzalez-Herraez

doi:10.1117/12.2679988

23 May 2023 Numerical modeling of a novel athermal fiber optic cable

Luca Schenato, Pedro J. Vidal-Moreno, Marco Santagiustina, Andrea Galtarossa, Luca Palmieri, Efren Diez-Jimenez, Sonia Martin-Lopez, Miguel Gonzalez-Herraez

Author Affiliations +

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 1264339 (2023) https://doi.org/10.1117/12.2679988
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

This paper introduces and numerically investigates a special optical fiber cable with zero temperature-induced phase shift. The cable structure consists of stacked layers of two materials with opportune mechanical, thermal, and geometrical properties. This structure allows adjusting the thermal-induced strain to the fiber, resulting in a broad tunability of the bare thermal expansion, including the negative range. By a proper choice of materials, the thickness of each layer, and the radius of the cable, the induced thermal strain can fully compensate for the thermo-optic effect, resulting in a complete temperature insensitivity of the phase shift. This cable may be of great interest in the sensing fields in all those applications where the temperature compensation is critical, such as in low-frequency distributed acoustic sensing. Moreover, it could be relevant for a wide range of telecom applications that require precise thermal control.

Citation Download Citation

Luca Schenato, Pedro J. Vidal-Moreno, Marco Santagiustina, Andrea Galtarossa, Luca Palmieri, Efren Diez-Jimenez, Sonia Martin-Lopez, and Miguel Gonzalez-Herraez "Numerical modeling of a novel athermal fiber optic cable", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 1264339 (23 May 2023); https://doi.org/10.1117/12.2679988

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