Abstract

Visible optical switches embedding a spin-crossover thin film and exploiting the frustrated total internal reflection operation principle are studied and optimized numerically with a view to obtain broadband high-contrast devices. A practical implementation using uncoated SF11 prisms embedding a 1-µm-thick layer of iron-triazolyl-borate complex as the thermo-active phase-change material is shown to support $p$-polarized modulation with contrast in excess of 90% over a spectral bandwidth greater than 270 nm and over an angular acceptance bandwidth of 0.45°, surpassing the performance achievable with optically resonant devices.

© 2022 Optica Publishing Group

Optically induced switching in spin-crossover compounds: microscopic and macroscopic models and their relationship

Iurii Gudyma and Artur Maksymov
Appl. Opt. 51(10) C55-C61 (2012)

Compact, broadband, and low-loss multimode optical switch based on phase-change material for mode division multiplexing systems

Ali Atri, Abbas Zarifkar, and Kolsoom Mehrabi
Appl. Opt. 61(7) 1784-1790 (2022)

Broadband terahertz tunable multi-film absorber based on phase-change material

Hao Peng, Ke Yang, Zhenxin Huang, and Zhi Chen
Appl. Opt. 61(11) 3101-3106 (2022)

Wideband polarization-independent plasmonic switch based on GST phase-change material

Saman Heidari and Najmeh Nozhat
Appl. Opt. 61(14) 4068-4073 (2022)

Reconfigurable hybrid silicon waveguide Bragg filter using ultralow-loss phase-change material

Ting Zhou, Yixiao Gao, Guoxiang Wang, Yimin Chen, Chenjie Gu, Gongxun Bai, Yaocheng Shi, and Xiang Shen
Appl. Opt. 61(7) 1660-1667 (2022)