8 July 2013 High birefringence triangular optical nanowire in suspended-core fiber for temperature sensing
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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 .
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ricardo M. Andre, Ricardo M. Andre, Martin Becker, Martin Becker, Kay Schuster, Kay Schuster, Manfred Rothhardt, Manfred Rothhardt, Hartmut Bartelt, Hartmut Bartelt, Manuel B. Marques, Manuel B. Marques, Orlando Frazão, 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 . Submission:
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