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Proceedings Paper

Magnetic field sensors using magnetophotonic crystals
Author(s): Ritnaro Fujikawa; Kazuhiro Tanizaki; A. V. Baryshev; Pang-Boey Lim; Kwang-Ho Shin; Hironaga Uchida; Mitsuteru Inoue
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Paper Abstract

In this work, we investigated the possibility of application of magnetophotonic crystals to the optical magnetic field sensor. The structure of 1D-MPC was (Ta2O5/SiO2)5/Bi:YIG/ (Ta2O5/SiO2)5 (magnetic material as a defect layer between two Bragg reflectors) on a fused quarts substrate using RF magnetron sputtering apparatus. We used Bismuth substituted yttrium iron garnet (Bi:YIG) polycrystal film as a defect layer, because Bi:YIG is well known as the magnetic material with effective MO properties, even if it is polycrystal. Due to specially designed structure, the localized mode appeared at the wavelength of 880 nm, which is tunable by the thickness of multi layers or defect layer. At the wavelength of localized mode, Faraday rotation was shown large enhancement of 1.5°, that is fifty times larger than for single Bi:YIG polycrystal film of the same thickness.

Paper Details

Date Published: 18 October 2006
PDF: 8 pages
Proc. SPIE 6369, Photonic Crystals and Photonic Crystal Fibers for Sensing Applications II, 63690G (18 October 2006); doi: 10.1117/12.685801
Show Author Affiliations
Ritnaro Fujikawa, Toyohashi Univ. of Technology (Japan)
Kazuhiro Tanizaki, Toyohashi Univ. of Technology (Japan)
A. V. Baryshev, Toyohashi Univ. of Technology (Japan)
Pang-Boey Lim, Toyohashi Univ. of Technology (Japan)
Japan Science and Technology Agency (Japan)
Kwang-Ho Shin, Toyohashi Univ. of Technology (Japan)
Kyungsung Univ. (South Korea)
Hironaga Uchida, Toyohashi Univ. of Technology (Japan)
Mitsuteru Inoue, Toyohashi Univ. of Technology (Japan)
Japan Science and Technology Agency (Japan)


Published in SPIE Proceedings Vol. 6369:
Photonic Crystals and Photonic Crystal Fibers for Sensing Applications II
Henry H. Du; Ryan Bise, Editor(s)

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