Siraji Ashfaqul Anwar, Zhao Yang
Opt Lett. 2015 Apr 1;40(7):1508-11. doi: 10.1364/OL.40.001508.
We investigate the properties of a planar photonic crystal cavity on glass and its applications as sensors. An airbridged twofold defect cavity on Schott glass background and Gorilla glass substrate has been designed for high Q-factor up to 4459. The average sensitivity of the cavity resonance to background refractive index is 388 nm/Refractive Index Unit. The resonant wavelength is sensitive to background temperature by 18.5 pm/°C. The designed sensors show much higher sensitivity than those based on waveguide interferometers or photonic bandgap structures without cavity resonance. The results are also useful for experimental studies of glass photonic devices.
我们研究了玻璃上平面光子晶体腔的特性及其作为传感器的应用。在肖特玻璃背景和大猩猩玻璃衬底上设计了一种气桥双缺陷腔，其品质因数高达4459。该腔共振对背景折射率的平均灵敏度为388纳米/折射率单位。共振波长对背景温度的灵敏度为18.5皮米/°C。所设计的传感器比基于无腔共振的波导干涉仪或光子带隙结构的传感器具有更高的灵敏度。这些结果对于玻璃光子器件的实验研究也很有用。
