Dipole-fiber systems: radiation field patterns, effective magnetic dipoles, and induced cavity modes

Shaghik Atakaramians; Andrey E. Miroshnichenko; Ilya V. Shadrivov; Tanya M. Monro; Yuri S. Kivshar; Shahraam V. Afshar

doi:10.1117/12.2204783

22 December 2015 Dipole-fiber systems: radiation field patterns, effective magnetic dipoles, and induced cavity modes

Shaghik Atakaramians, Andrey E. Miroshnichenko, Ilya V. Shadrivov, Tanya M. Monro, Yuri S. Kivshar, Shahraam V. Afshar

Proceedings Volume 9668, Micro+Nano Materials, Devices, and Systems; 96683J (2015) https://doi.org/10.1117/12.2204783
Event: SPIE Micro+Nano Materials, Devices, and Applications, 2015, Sydney, New South Wales, Australia

Abstract

We study the radiation patterns produced by a dipole placed at the surface of a nanofiber and oriented perpendicular to it, either along the radial (r-oriented) or azimuthal (Φ-oriented) directions. We find that the dipole induces an effective circular cavity-like leaky mode in the nanofiber. The first radiation peak of the Φ-oriented dipole contributes only to TE radiation modes, while the radiation of the r-oriented dipole is composed of both TE and TM radiation modes, with relative contribution depending on the refractive index of the nanofiber. We reveal that the field pattern of the first resonance of a Φ-oriented dipole is associated with a magnetic dipole mode and strong magnetic response of an optical nanofiber.

Citation Download Citation

Shaghik Atakaramians, Andrey E. Miroshnichenko, Ilya V. Shadrivov, Tanya M. Monro, Yuri S. Kivshar, and Shahraam V. Afshar "Dipole-fiber systems: radiation field patterns, effective magnetic dipoles, and induced cavity modes", Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96683J (22 December 2015); https://doi.org/10.1117/12.2204783

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