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IEICE TRANSACTIONS on Electronics

Observation of Faraday Rotation and Magnetic Circular Dichroism in an Optical Near-Field Probe Coated with Fe

Tadashi KAWAZOE, Shinya MARUYAMA, Kiyoshi KOBAYASHI, Motoichi OHTSU

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Summary :

We demonstrate a novel fiber device exhibiting magnetic circular dichroism (MCD) and Faraday rotation in sharpened optical fibers coated with Fe. The degree of MCD was 0.68 in a magnetic field of 0.35 T and the Faraday rotation angle was as great as 110 degrees. Such great magneto-optical effect is due to optical near-field interactions in the sub-wavelength region, i.e., in the tip of the near-field fiber probe. These effects can be attributed to the large magnitude of the magneto optical coefficient of Fe.

Publication
IEICE TRANSACTIONS on Electronics Vol.E88-C No.9 pp.1850-1852
Publication Date
2005/09/01
Publicized
Online ISSN
DOI
10.1093/ietele/e88-c.9.1850
Type of Manuscript
Special Section LETTER (Special Section on Nanophotonics and Related Techniques)
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