Zhang Zhijian, Chen Yongyao, Liu Haijun, Bae Hyungdae, Olson Douglas A, Gupta Ashwani K, Yu Miao
Opt Express. 2015 Apr 20;23(8):10732-40. doi: 10.1364/OE.23.010732.
We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plasmonic interference in the structure, which are the two essential mechanisms for multi-parameter sensing. We experimentally show that these two mechanisms have distinctive responses to temperature and refractive index, rendering the device the capability of simultaneous temperature and refractive index measurement on an ultra-miniature form factor. A high refractive index sensitivity of 220 nm per refractive index unit (RIU) and a high temperature sensitivity of -60 pm/ °C is achieved with our device.
我们展示了一种新型的微型多参数传感装置，该装置基于在光通信波长范围内的光纤端面上制造的等离子体干涉仪。该装置能够实现结构中表面等离子体共振与等离子体干涉之间的耦合，这是多参数传感的两个基本机制。我们通过实验表明，这两种机制对温度和折射率具有独特的响应，使该装置能够以超微型外形同时测量温度和折射率。我们的装置实现了每折射率单位（RIU）220 nm的高折射率灵敏度和-60 pm/°C的高温度灵敏度。
