  Optical switches based on phase change materials (PCMs) hold great promise
for various photonic applications such as telecommunications, data
communication, optical interconnects, and signal processing. Their non-volatile
nature as well as rapid switching speeds make them highly desirable for
developing advanced and energy-efficient optical communication technologies.
Ongoing research efforts in exploring new PCMs, optimizing device designs, and
overcoming existing challenges are driving the development of innovative and
high-performance optical switches for the next generation of photonics
applications. In this study, we design and experimentally demonstrate a novel
optical amplitude switch design incorporating PCM antimony trisulfide (Sb2S3)
based on the Brewster angle phenomenon.
