Abstract-Reconfigurable hybrid metamaterial waveguide system at terahertz regime

Reconfigurable hybrid metamaterial waveguide system at terahertz regime 

https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-16-18244


Xiaolei Zhao, Lin Zhu, Cai Yuan, and Jianquan Yao

We propose an optically controlled reconfigurable hybrid metamaterial waveguide system at terahertz frequencies, which consists of a two dimensional gold cut wire array deposited on top of a dielectric slab waveguide. Numerical findings reveal that this device is able to realize dynamic transformation from double electromagnetically induced transparency like material to ultra-narrow band guided mode resonance (GMR) filter by controlling the optically excited free carriers in gallium arsenide pads inserted between the gold cut wires. During this reconfiguration process of resonance modes, high quality factors up to ~104 and ~118 for the two EIT-like peaks and up to ~578 for the GMR filter are obtained.

© 2016 Optical Society of America

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Xiaolei Zhao, Lin Zhu, Cai Yuan, and Jianquan Yao