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Materials 2012, 5(5), 857-871; doi:10.3390/ma5050857

Optical Isolator Utilizing Surface Plasmons

Spintronic Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, Ibaraki, 305-8568, Japan
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Received: 30 March 2012 / Revised: 9 May 2012 / Accepted: 9 May 2012 / Published: 16 May 2012
(This article belongs to the Special Issue Photonic Materials and Applications)
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Abstract

Feasibility of usage of surface plasmons in a new design of an integrated optical isolator has been studied. In the case of surface plasmons propagating at a boundary between a transition metal and a double-layer dielectric, there is a significant difference of optical loss for surface plasmons propagating in opposite directions. Utilizing this structure, it is feasible to fabricate a competitive plasmonic isolator, which benefits from a broad wavelength operational bandwidth and a good technological compatibility for integration into the Photonic Integrated Circuits (PIC). The linear dispersion relation was derived for plasmons propagating in a multilayer magneto-optical slab.
Keywords: optical isolator; surface plasmons; magneto-optical effect optical isolator; surface plasmons; magneto-optical effect
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Zayets, V.; Saito, H.; Ando, K.; Yuasa, S. Optical Isolator Utilizing Surface Plasmons. Materials 2012, 5, 857-871.

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