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Journal of Nanophotonics

High birefringence triangular optical nanowire in suspended-core fiber for temperature sensing
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Paper Abstract

Triangular nanowires that present a high birefringence and a very strong confinement were fabricated by tapering suspended-core fibers (SCFs) down to core diameters below 1000 nm. Each nanowire presented a high birefringence with an order of magnitude of 10 −3 . As the spectra of the SCF tapers inserted in fiber loop mirrors can be used to generate a sinusoidal interference pattern from the two main modes (fast and slow axis), a nanowire was employed as a sensing element in a Sagnac interferometer for measuring temperature. Temperature sensitivity was determined to be -56.2  pm/K using a triangular nanowire of 810 nm in-circle diameter when compared with that of a conventional untapered SCF whose temperature sensitivity is −2.1  pm/K .

Paper Details

Date Published: 8 July 2013
PDF: 10 pages
J. Nanophoton. 7(1) 073088 doi: 10.1117/1.JNP.7.073088
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Ricardo M. Andre, INESC Porto (Portugal)
Martin Becker, Institut für Photonische Technologien e.V. (Germany)
Kay Schuster, Institut für Photonische Technologien e.V. (Germany)
Manfred Rothhardt, Institut für Photonische Technologien e.V. (Germany)
Hartmut Bartelt, Institut für Photonische Technologien e.V. (Germany)
Manuel B. Marques, INESC Porto (Portugal)
Orlando Frazão, INESC Porto (Portugal)

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