| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Nonreciprocal Magneto-Plasmonic Waveguide with Compact Metal-Sandwiched Structure |
| JIN Yi-Chang, XU Chao, QIU Hui-Ye, XIANG Le-Qiang, YANG Jian-Yi, JIANG Xiao-Qing** |
Department of Information Science and Electronics Engineering, Zhejiang University, Hangzhou 310027
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| Cite this article: |
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JIN Yi-Chang, XU Chao, QIU Hui-Ye et al 2013 Chin. Phys. Lett. 30 094203 |
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Abstract A magneto-optical (MO) metal-sandwiched multilayered structure composed of metal, MO medium and dielectric buffer layers is presented and investigated by finite-element-method-based-mode solver and perturbation theory. The results show that this structure exhibits large nonreciprocal phase shift, strong mode confinement in the narrow buffer layers as well as very low propagation loss. The propagation length with 1 dB loss is much longer than the required length of π/2 nonreciprocal phase shifts in this structure. The modal area is smaller than half of the conventional MO waveguides. This phenomenon can be used to achieve a compact plasmonic isolator based on the Mach–Zehnder interferometer.
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Received: 13 June 2013
Published: 21 November 2013
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| PACS: |
42.82.-m
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(Integrated optics)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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85.70.Sq
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(Magnetooptical devices)
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