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arXiv · 1212.3851

Sensitivity enhancement in optical micro-tube resonator sensors via mode coupling

Tao Ling·L. Jay Guo
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Abstract

A liquid filled, low refractive index material inner-coated silica micro-tube has been proposed and studied as a coupled micro-resonator sensor to greatly enhance biochemical sensor sensitivity. Its unique coupling phenomenon has been analyzed and utilized to boost the refractive index sensitivity of the device to 967nm/RIU. Through optimization of the coupling strength between the two microresonators, further improvement in refractive index sensitivity up to 1100nm/RIU has been achieved. This mode coupling strategy allows us to design robust, thick-walled micro-tube sensors with ultra-high sensitivity which is useful in practical biochemical sensing applications.

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Tao Ling, L. Jay Guo. 2012-12-16. Sensitivity enhancement in optical micro-tube resonator sensors via mode coupling. https://doi.org/10.1063/1.4813007

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