Reflection based Extraordinary Optical Transmission Fiber Optic Probe for Refractive Index Sensing.

Reflection based Extraordinary Optical Transmission Fiber Optic Probe for Refractive Index Sensing.
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DOI:
10.1016/j.snb.2013.11.046
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发表时间:
2014-03-31
期刊:
Sensors and actuators. B, Chemical
影响因子:
--
通讯作者:
Xiao H
Xiao H
中科院分区:
其他
文献类型:
--
作者:
Lan X;Cheng B;Yang Q;Huang J;Wang H;Ma Y;Shi H;Xiao H

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设计并制作了基于非寻常光传输(EOT)现象的光纤化学传感探头,在镀金光纤端面上开亚波长孔阵列。该器件响应于周围的折射率增加而表现出高灵敏度的红移,使得基于反射的折射率传感器具有紧凑和简单的配置。通过选择孔阵列的周期,传感器可以被设计成在近红外通信波长范围内工作,其中丰富的源和检测器可用于易于仪器化。新的传感器探头的折射率测量使用折射率匹配流体。在折射率1.333~1.430范围内,灵敏度达到573 nm/RIU。
Fiber optic probes for chemical sensing based on the extraordinary optical transmission (EOT) phenomenon are designed and fabricated by perforating subwavelength hole arrays on the gold film coated optical fiber endface. The device exhibits a red shift in response to the surrounding refractive index increases with high sensitivity, enabling a reflection-based refractive index sensor with a compact and simple configuration. By choosing the period of hole arrays, the sensor can be designed to operate in the near infrared telecommunication wavelength range, where the abundant source and detectors are available for easy instrumentation. The new sensor probe is demonstrated for refractive index measurement using refractive index matching fluids. The sensitivity reaches 573 nm/RIU in the 1.333~1.430 refractive index range.
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