Abstract:
:We analytically and numerically investigate magneto-plasmons in metal films surrounded by a ferromagnetic dielectric. In such waveguide using a metal film with a thickness exceeding the Skin depth, an external magnetic field in the transverse direction can induce a significant spatial asymmetry of mode distribution. Superposition of the odd and the even asymmetric modes over a distance leads to a concentration of the energy on one interface which is switched to the other interface by the magnetic field reversal. The requested magnitude of magnetization is exponentially reduced with the increase of the metal film thickness. Based on this phenomenon, we propose a waveguide-integrated magnetically controlled switchable plasmonic routers with 99-%-high contrast within the optical bandwidth of tens of THz. This configuration can also operate as a magneto-plasmonic modulator.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Ho KS,Im SJ,Pae JS,Ri CS,Han YH,Herrmann Jdoi
10.1038/s41598-018-28567-8subject
Has Abstractpub_date
2018-07-12 00:00:00pages
10584issue
1issn
2045-2322pii
10.1038/s41598-018-28567-8journal_volume
8pub_type
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