A Photonic Switch Based on a Hybrid Combination of Metallic Nanoholes and Phase-change Vanadium Dioxide
Miao Sun, Mohammad Taha, Sumeet Walia, Madhu Bhaskaran, Sharath Sriram, William Shieh, Ranjith Rajasekharan Unnithan
SCIENTIFIC REPORTS | NATURE PUBLISHING GROUP | Published : 2018
A photonic switch is an integral part of optical telecommunication systems. A plasmonic bandpass filter integrated with materials exhibiting phase transition can be used as a thermally reconfigurable optical switch. This paper presents the design and demonstration of a broadband photonic switch based on an aluminium nanohole array on quartz utilising the semiconductor-to-metal phase transition of vanadium dioxide. The fabricated switch shows an operating range over 650 nm around the optical communication C, L, and U band with maximum 20%, 23% and 26% transmission difference in switching in the C band, L band, and U band, respectively. The extinction ratio is around 5 dB in the entire operati..View full abstract
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Awarded by Australian Research Council
RRU and MB acknowledge Australian Research Council support through DP170100363 and DE160100023 respectively. SW acknowledges the support through a Malcolm Moore Foundation Industry Research Award. Thanks Babak Nasr for helping with imaging sample and giving valuable advice for the fabrication. This work was partially performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF). This project was undertaken with the assistance of resources and services from the National Computational Infrastructure (NCI), which is supported by the Australian Government.