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Non-volatile Optical Switch Based on a GST-Loaded Directional Coupler

Zhang, H., Zhou, L., Lu, L. , Chen, J. & Rahman, B. M. ORCID: 0000-0001-6384-0961 (2018). Non-volatile Optical Switch Based on a GST-Loaded Directional Coupler. In: 2018 IEEE 3rd Optoelectronics Global Conference (OGC). 2018 the 3rd Optoelectronics Global Conference (OGC 2018), 4-7 Sep 2018, Shenzhen, China. doi: 10.1109/ogc.2018.8529888


We present a non-volatile optical switch based on a directional coupler comprising a silicon-Ge2Sb2Te5 (GST) hybrid waveguide. The non-volatility of GST makes it attractive for reducing static power consumption in optical switching. Experimental results show that the optical switch has an extinction ratio of >20 dB in the bar state and >25 dB in the cross state around 1578 nm wavelength. The insertion loss is 2 dB and 7 dB for the bar and cross states, respectively.

Publication Type: Conference or Workshop Item (Paper)
Additional Information: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: School of Science & Technology > Engineering
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