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Fluid Sensor Based on Transmission Dip Caused by Mini Stop-Band in Photonic Crystal Slab |
| CAO Lei;HUANG Yi-Dong;MAO Xiao-Yu;LI Fei;ZHANG Wei;PENG Jiang-De |
| State Key Lab of Integrated Optoelectronics, Department of Electronic Engineering Tsinghua University, Beijing 100084 |
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CAO Lei, HUANG Yi-Dong, MAO Xiao-Yu et al 2008 Chin. Phys. Lett. 25 2101-2103 |
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Abstract We propose a fluid sensor based on transmission dip caused by mini stop-band in photonic crystal slabs. Simulation results show that this novel type of sensors has large detective range (more than 1.5) and relative high sensitivity (4.3×10-5 in certain conditions). The central frequency and bandwidth of the mini stop-bands depend on the structure parameters of PC waveguides, which makes it possible to optimize the detective range and detective sensitivity.
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42.81.Pa
42.79.-e
42.70.Qs
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Received: 24 January 2008
Published: 31 May 2008
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