Liu Hongpeng, Yu Dan, Zhou Ke, Mao Dongyao, Liu Langbo, Wang Hui, Wang Weibo, Song Qinggong
Appl Opt. 2016 Dec 10;55(35):9907-9916. doi: 10.1364/AO.55.009907.
Temperature-induced diffraction spectrum responses of holographic gratings are characterized for exploring the temperature-sensing capability of a holographic sensor. Linear blue shift of peak wavelength and linear diffraction reduction are observed. It provides quantitative expressions for sensing applications. Inorganic nanoparticles are dispersed into the binder to improve sensing properties. Obvious improvement of sensing parameters, including wavelength shift and diffraction change, is confirmed. The sensitivity, response rate, and linear response region of holographic sensors are determined to evaluate sensing capacity. Influence of relative humidity on holographic sensing response is discussed. Expansion of humidity range provides a probability for extending the range of wavelength shift. Finally, the temperature response reversibility of a holographic sensor is evaluated. These experimental results can expand the practical application field of holographic sensing strategy and accelerate the development of holographic sensors.
通过表征全息光栅的温度诱导衍射光谱响应来探索全息传感器的温度传感能力。观察到峰值波长的线性蓝移和衍射的线性降低。这为传感应用提供了定量表达式。将无机纳米颗粒分散到粘合剂中以改善传感性能。证实了包括波长偏移和衍射变化在内的传感参数有明显改善。确定全息传感器的灵敏度、响应率和线性响应区域以评估传感能力。讨论了相对湿度对全息传感响应的影响。湿度范围的扩大为扩展波长偏移范围提供了可能性。最后，评估了全息传感器的温度响应可逆性。这些实验结果可以扩展全息传感策略的实际应用领域，并加速全息传感器的发展。
