Design of a 4-level active photonics phase change switch using VO 2 and Ge 2 Sb 2 Te 5

• Main Authors: Meng, Yun, Behera, Jitendra K., Ke, Yujie, Chew, Litian, Wang, Yang, Long, Yi, Simpson, Robert E.
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2019
• Subjects: Optical Coatings; Optical Constants; DRNTU::Engineering::Materials
• Online Access: https://hdl.handle.net/10356/83005; http://hdl.handle.net/10220/47546
• Institution: Nanyang Technological University

The objective of this work is to design and demonstrate multilevel optical switches by combining different phase change materials. Ge2Sb2Te5 and VO2 nanolayer structures were designed to maximize the optical contrast between four different reflective states. These different optical states arise due...