Dynamic dual-functional optical wave plate based on phase-change meta-molecules

Ziru Cai, Yingtao Ding, Zhiming Chen, Ziwei Zheng, Fei Ding*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Optical metasurfaces have shown great potential for revolutionizing wave plates by enabling compact footprints and diversified functionalities. However, most metasurface wave plates (meta-WPs) are typically passive, featuring defined responses after fabrication, whereas dynamic meta-WPs have so far often been limited to ON and OFF states. Here, we design a dynamic dual-functional meta-WP based on judiciously designed low-loss Sb2Se3 meta-molecules at the telecom wavelength of 1.55 µm which enables reconfigurable linear-to-circular and linear-to-linear polarization conversion for orthogonal linear polarizations when Sb2Se3 transits between amorphous and crystalline states. In addition, a comprehensive electro-thermal simulation is carried out to verify the phase change process for realistic implementation. The designed dynamic dual-functional wave plate may open new avenues for developing integrated adaptive photonics with dynamic and multiplexed functionalities.

Original languageEnglish
JournalOptics Letters
Volume48
Issue number14
Pages (from-to)3685-3688
ISSN0146-9592
DOIs
Publication statusPublished - 15. Jul 2023

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