28‐2: Invited Paper: Templated Liquid Crystal Photonic Devices

Many researches have been carried out on the high performance of cholesteric liquid crystal (CLC), blue phase liquid crystal (BPLC) and sphere phase liquid crystal (SPLC), such as wide bandwidth, high reflectivity, multi‐wavelength, and good thermal stability. Among them, templating process is an attractive technique, which may induce the twist structure by polymer template and achiral nematic liquid crystals (LCs). A multi‐wavelength filter with Templated‐BPLCs was demonstrated that it may get much narrower bandwidth, better thermal stability compared with the CLC filters. Furthermore, the central wavelength and bandwidth can be easily controlled by the fabrication process and the optimization of the material concentration. And a high reflectivity CLC filter with a single‐layer template was proposed, which may reflect both right‐ and left‐handed polarized light.