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Proceedings Paper

Nonlinear optical modulation in a plasmonic Bi:YIG Mach-Zehnder interferometer
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Paper Abstract

In this work, we propose a magnetoplasmonic modulator for nonlinear radio-frequency (RF) modulation of an integrated optical signal. The modulator consists of a plasmonic Mach-Zehnder interferometer (MZI), constructed of the ferrimagnetic garnet, bismuth-substituted yttrium iron garnet (Bi:YIG). The transverse component of the Bi:YIG magnetization induces a nonreciprocal phase shift (NRPS) onto the guided optical mode, which can be actively modulated through external magnetic fields. In an MZI, the modulated phase shift in turn modulates the output optical intensity. Due to the highly nonlinear evolution of the Bi:YIG magnetization, we show that the spectrum of the output modulated intensity signal can contain harmonics of the driving RF field, frequency splitting around the driving frequency, down-conversion, or mixing of multiple RF signals. This device provides a unique mechanism of simultaneously generating a number of modulation frequencies within a single device.

Paper Details

Date Published: 16 February 2017
PDF: 6 pages
Proc. SPIE 10106, Integrated Optics: Devices, Materials, and Technologies XXI, 1010617 (16 February 2017); doi: 10.1117/12.2252840
Show Author Affiliations
C. J. Firby, Univ. of Alberta (Canada)
A. Y. Elezzabi, Univ. of Alberta (Canada)

Published in SPIE Proceedings Vol. 10106:
Integrated Optics: Devices, Materials, and Technologies XXI
Sonia M. García-Blanco; Gualtiero Nunzi Conti, Editor(s)

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