期刊
SCIENCE BULLETIN
卷 64, 期 11, 页码 782-789出版社
ELSEVIER
DOI: 10.1016/j.scib.2019.04.035
关键词
Phase change material; Nonvolatile optical switch; Integrated optics devices; Chalcogenide Ge2Sb2Te5
资金
- National Natural Science Foundation of China [61535006, 61705129, 61661130155]
- Shanghai Municipal Science and Technology Major Project [2017SHZDZX03]
Low-power reconfigurable optical circuits are highly demanded to satisfy a variety of different applications. Conventional electro-optic and thermo-optic refractive index tuning methods in silicon photonics are not suitable for reconfiguration of optical circuits due to their high static power consumption and volatility. We propose and demonstrate a nonvolatile tuning method by utilizing the reversible phase change property of GST integrated on top of the silicon waveguide. The phase change is enabled by applying electrical pulses to the mu m-sized GST active region in a sandwich structure. The experimental results show that the optical transmission of the silicon waveguide can be tuned by controlling the phase state of GST. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press.
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