Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/75070
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Type: Journal article
Title: Magnetic field interaction with guided light for detection of an active gaseous medium within an optical fiber
Author: Englich, F.
Grabka, M.
Lancaster, D.
Monro, T.
Citation: Optics Express, 2013; 21(2):2491-2499
Publisher: Optical Soc Amer
Issue Date: 2013
ISSN: 1094-4087
1094-4087
Statement of
Responsibility: 
Florian V. Englich, Michal Grabka, David G. Lancaster, and Tanya M. Monro
Abstract: We report a novel fiber-optic sensing architecture for the detection of paramagnetic gases. By interacting a modulated magnetic field with guided light within a microstructured optical fiber, it is possible to exploit Faraday Rotation Spectroscopy (FRS) within unprecedentedly small sample volumes. This approach, which utilizes magnetic circular birefringence and magnetic circular dichroism effects, is applied to a photonic bandgap fiber to detect molecular oxygen and operates at a wavelength of 762.309 nm. The optical fiber sensor has a 4.2 nL detection volume and 14.8 cm long sensing region. The observed FRS spectra are compared with a theoretical model that provides a first understanding of guided-mode FRS signals. This FRS guided-wave sensor offers the prospect of new compact sensing schemes.
Keywords: Gases; Photometry; Spectrum Analysis; Equipment Design; Equipment Failure Analysis; Optical Fibers; Magnetic Fields
Rights: © 2013 Optical society of America
RMID: 0020125826
DOI: 10.1364/OE.21.002491
Appears in Collections:IPAS publications

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