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Vol. 160, Issue 12, December 2013, pp. 503-508




Information Industry Upgrading Sensing Technology Using Plasmonic Waveguide Directly Coupled to Rectangular Cavity
Weiqing LI

College of Economics, Zhejiang University, Hangzhou 310027, China Social Science Academy of Zhejiang Province, Hangzhou 310027, China
Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China
E-mail: weiqinglist@163.com


Received: 13 October 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems


Abstract: We analyze information industry upgrading based on sensing technology innovation of plasmonic cavity evanescently coupled to metal-dielectric-metal waveguide. The proposed optical sensor technology can detect the local variation of the refractive index inside the nanoscale cavity. We present the physical mechanism of the sensing process which promote photovoltaic industry upgrading. Numerical experiments based on the finite difference time domain method confirm our theory prediction. The resolution of refractive index of this sensor can reach 10-6 for the first order resonant mode, and the enlarged free spectral range of the system could release the influence of the background noise. Furthermore, we should increase sensing technology innovation.


Keywords: Industry upgrading, Sensing technology innovation, Plasmonic waveguide, Rectangular cavity.


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