Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4738884
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- DRDO-DIAT programme on Nanomaterials by ER&IPR, DRDO, New Delhi
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Lithium niobate with large non-linear optical coefficient and birefringence finds applications as varied optical devices. Nanoparticulate, polycrystalline LiNbO3 was synthesised and deposited on the core of the single-mode optical fiber and evaluated for their temperature and magnetic field sensing using C-band source. Temperature sensing was 30 pm/degrees C with improved core-clad coupling at higher temperature. The magnetic field (0-30 mT) response was 131 pm/mT, with large hysteresis. The results have been correlated with the manipulation of core-clad modes due to strain induced in the core-deposited film and introduction of cation vacancies, resulting in induced ferromagnetism; thereby resulting in changed refractive index. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4738884]
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