Figure of merit of phase change materials for Mach-Zehnder interferometer-based and directional-coupler-based optical switches

Kenta Sakamoto; Masashi Kuwahara; Hiroyuki Tsuda

doi:10.1117/12.2545700

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3 March 2020 Figure of merit of phase change materials for Mach-Zehnder interferometer-based and directional-coupler-based optical switches

Kenta Sakamoto, Masashi Kuwahara, Hiroyuki Tsuda

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Proceedings Volume 11276, Optical Components and Materials XVII; 1127604 (2020) https://doi.org/10.1117/12.2545700
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

For further improvement of phase change material switches, relationships between optical characteristics of phase change materials(PCM) and the performance of optical switches were investigated. PCM optical switch is optimized for the both states of the insertion loss to be balanced. With optimized three-channel directional coupler switch, the refractive index difference between amorphous and crystalline state was inversely proportional to the insertion loss.

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Kenta Sakamoto, Masashi Kuwahara, and Hiroyuki Tsuda "Figure of merit of phase change materials for Mach-Zehnder interferometer-based and directional-coupler-based optical switches", Proc. SPIE 11276, Optical Components and Materials XVII, 1127604 (3 March 2020); https://doi.org/10.1117/12.2545700

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