Phase change materials in photonic devices

被引:59
作者
Gong, Zilun [1 ]
Yang, Fuyi [1 ,2 ]
Wang, Letian [3 ]
Chen, Rui [1 ,2 ]
Wu, Junqiao [1 ,2 ]
Grigoropoulos, Costas P. [3 ]
Yao, Jie [1 ,2 ,4 ]
机构
[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Mech Engn, Laser Thermal Lab, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Tsinghua Berkeley Shenzhen Inst, Berkeley, CA 94720 USA
关键词
96;
D O I
10.1063/5.0027868
中图分类号
O59 [应用物理学];
学科分类号
摘要
Recent developments in reconfigurable photonic devices highly rely on the effective refractive index change enabled by phase change materials (PCMs) as either dielectric surroundings or constituting materials. This universal characteristic, tunable refractive index, is shared among various kinds of PCMs and has been successfully utilized to achieve multilevel modulations for both free-space and integrated photonics. In this Perspective, we briefly recapitulate the fundamental mechanisms of phase transitions for three dominant PCMs. The progress in integrating different PCMs with on-chip silicon photonics and periodic antenna arrays are reviewed and analyzed in parallel. We also discuss the existing problems of PCM photonics, for example, the compatibility with commercial production line, the stability issue, and accessibility of the stimuli. In the end, we provide the outlook for the improving material engineering of PCM and multi-functional PCM-based photonics devices.
引用
收藏
页数:11
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