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

Ricardo M. Andre; Martin Becker; Kay Schuster; Manfred Rothhardt; Hartmut Bartelt; Manuel B. Marques; Orlando Frazão

doi:10.1117/1.JNP.7.073088

8 July 2013 High birefringence triangular optical nanowire in suspended-core fiber for temperature sensing

Ricardo M. Andre, Martin Becker, Kay Schuster, Manfred Rothhardt, Hartmut Bartelt, Manuel B. Marques, Orlando Frazão

Author Affiliations +

Journal of Nanophotonics, Vol. 7, Issue 1, 073088 (July 2013). https://doi.org/10.1117/1.JNP.7.073088

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 .

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Ricardo M. Andre, Martin Becker, Kay Schuster, Manfred Rothhardt, Hartmut Bartelt, Manuel B. Marques, and Orlando Frazão "High birefringence triangular optical nanowire in suspended-core fiber for temperature sensing," Journal of Nanophotonics 7(1), 073088 (8 July 2013). https://doi.org/10.1117/1.JNP.7.073088

Published: 8 July 2013

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