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20 May 2013 Theoretical modeling of the Faraday effect within a gas-filled photonic bandgap fiber
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Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87942M (2013) https://doi.org/10.1117/12.2026059
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland
Abstract
Recently we have demonstrated that conventional (free-space) Faraday rotation spectroscopy (FRS) can be successfully transitioned into optical fiber-based sensing architectures using paramagnetic gas-filled hollow-core photonic bandgap fibers (HC-PCFs)1. Our measurements revealed that due to the birefringence properties of the HC-PCFs, behavior of the fiber-optic FRS signals is substantially different compared to free-space FRS systems. Furthermore, magnetic circular dichroism tends to have much higher influence on the FRS signals than in other systems. To explain this behavior we have developed a theoretical model, and shown that close agreement with the experimental data can be achieved. In this paper we focus attention on the detailed explanation and the in-depth discussion of the model and assumptions incorporated within it. This approach can be easily extended to account for parasitic effects that take place in real-world FRS sensor systems such as imperfect polarizers or birefringent gas cell windows.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michal Grabka, Florian V. Englich, David G. Lancaster, Wojciech Gawlik, and Tanya M. Monro "Theoretical modeling of the Faraday effect within a gas-filled photonic bandgap fiber", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87942M (20 May 2013); https://doi.org/10.1117/12.2026059
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