Journal
OPTICS LETTERS
Volume 34, Issue 17, Pages 2697-2699Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.34.002697
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Funding
- National Basic Research Program of China [2007CB307004]
- National Natural Science Foundation of China (NSFC) [NSFC-60537010, NSFC-60877023]
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The coupling characteristics of a hybrid coupler comprised of a long-range surface-plasmon-polariton (LRSPP) waveguide and a dielectric waveguide is analyzed with different detecting layers. Calculation results show that the coupling strength between the LRSPP mode and the dielectric-waveguide mode is rather sensitive to the refractive index of the detecting layer. This is promising to realize an integrated refractive index senor with high resolution better than 4 x 10(-7) refractive index units or a modulator with rather low driving power and insert loss. (C) 2009 Optical Society of America
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