Polarization dependent properties of graphene oxide-coated tilted fiber Bragg gratings for refractometry

Karima Chah; Anna Wróblewska; Jakub Sitek; Hadrien Fasseau; Tianbo Zhu; Iwona Pasternak; Christophe Caucheteur

doi:10.1117/12.2678523

23 May 2023 Polarization dependent properties of graphene oxide-coated tilted fiber Bragg gratings for refractometry

Karima Chah, Anna Wróblewska, Jakub Sitek, Hadrien Fasseau, Tianbo Zhu, Iwona Pasternak, Christophe Caucheteur

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126430Z (2023) https://doi.org/10.1117/12.2678523
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

Graphene oxide (GO) thin films fabricated by the vacuum filtration method were deposited on bare tilted fiber Bragg grating for refractometry measurements. Two different layer thicknesses (100 nm and 200nm) were used to prepare the samples. The amplitude spectra of the GO-coated TFBGs (GO-TFBGs) were measured with linearly polarized light for different refractive index values of LiCl solutions (1.3333-1.3342). We show that when polarized light is used, the 200 nm GO-TFBGs achieve similar behavior as plasmonic gold-coated TFBGs (Au-TFBGs). This latter exhibits a characteristic attenuation in the amplitude spectrum when P-polarized light excites a surface plasmon resonance (SPR). This behavior suggests that GO is present as a mix of discontinuous and stratified flakes favorable for plasmon-plasmon hybridization, which can be generated for both P and/or S-polarization of the light.

Citation Download Citation

Karima Chah, Anna Wróblewska, Jakub Sitek, Hadrien Fasseau, Tianbo Zhu, Iwona Pasternak, and Christophe Caucheteur "Polarization dependent properties of graphene oxide-coated tilted fiber Bragg gratings for refractometry", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126430Z (23 May 2023); https://doi.org/10.1117/12.2678523

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