长周期光纤光栅的大范围波长调谐与温度补偿

分别采用丙烯酸类聚全物与硅树脂材料实现了长周期光纤光栅（LPFG）的大范围波长调谐与温度补偿。当温度从0-100℃变化时，对于表面涂覆丙烯酸类聚合物的LPFG，波长调谐范围增大至60nm；而对于涂覆硅树脂 LPFG，同样的温度变化波长漂移则被抑制在0.6nm这内。前者提供一种大范围波长调谐带阻滤波器或高灵敏度温度传感器的思路；后者可考虑进一步改进后用作温度补偿的滤波器、波分解复用器或应变传感器。     

Applications of Acrylate—based Polymer and Silicone Resin on LPFG—based Devices

Both acrylate-based polymer and silicone resin are proposed as recoating materials surrounding LPFGs for purposes of different applications.For the LPFG recoated with a thin layer of acrylate-based polymer,the range of wavelength shift as much as 60nm is expected when temperature changes from0-100℃.As for that with surrounding material of silicone resin,the temperature stability is greatly improved depicted as the maximum wavelength shift of about 0.6nm with the same temperature variation.The former is potentially a broadband tunable band rejection filter or temperature sensor with enhanced sensitivity.And the latter could be applied as temperature insensitive filter,demultiplexer or strain sensor.