Wu Yung-Hsun, Lin Yi-Hsin, Lu Yan-Qing, Ren Hongwen, Fan Yun-Hsing, Wu Janet, Wu Shin-Tson
Opt Express. 2004 Dec 13;12(25):6382-9. doi: 10.1364/opex.12.006382.
We demonstrate a variable optical attenuator (VOA) at lambda=1.55 microm using a sheared polymer network liquid crystal (SPNLC). The SPNLC exhibits a fast response time and weak wavelength dependency. Comparing with other polymer-stabilized liquid crystals, the SPNLC has lower driving voltage and negligible light scattering loss when the wavelength exceeds 700 nm. A reflection type VOA with ~0.24 ms response time and -32 dB dynamic range is demonstrated at room temperature and 35 Vrms voltage.
我们展示了一种使用剪切聚合物网络液晶（SPNLC）的波长为1.55微米的可变光衰减器（VOA）。该SPNLC具有快速响应时间和较弱的波长依赖性。与其他聚合物稳定液晶相比，当波长超过700纳米时，SPNLC具有更低的驱动电压和可忽略不计的光散射损耗。在室温及35 Vrms电压下展示了一种响应时间约为0.24毫秒、动态范围为 -32 dB的反射型VOA。
