An electrically tunable and polarizer-free photonic device is developed using a one-dimensional photonic crystal (PC) infiltrated with dual-frequency cholesteric liquid crystal (DFCLC) as a defect layer. The PC/DFCLC hybrid cell allows the employment of various frequency-modulated voltage pulses to regulate defect modes and switch between stable states. This device possesses many alluring features such as rapid bistable switching, intensity tunability, and wavelength tunability in the defect modes, and it requires no polarizers. It can be used as a filter, fast-speed shutter, or light-intensity modulator.
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机译：使用渗透有双频胆甾型液晶（DFCLC）的一维光子晶体（PC）作为缺陷层，开发了一种可电调谐且无偏振器的光子器件。 PC / DFCLC混合电池允许使用各种频率调制的电压脉冲来调节缺陷模式并在稳定状态之间切换。该器件具有许多诱人的功能，例如快速双稳态切换，强度可调性和缺陷模式下的波长可调性，并且不需要偏振器。它可用作滤镜，快速快门或光强度调制器。
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