InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing
Date
2011
Authors
Wang, Bowen
Dundar, Mehmet A
Notzel, Richard
Karouta, Fouad
He, Sailing
van der Heijden, Rob W.
Journal Title
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Volume Title
Publisher
SPIE
Abstract
Results are presented on the use of InGaAsP photonic crystal nanobeam slot waveguides for refractive index sensing. These sensors are read remote-optically through photoluminescence, which is generated by built-in InGaAs quantum dots. The nanobeams are designed to maximize the electromagnetic field intensity in the slot region, which resulted in record-high sensitivities in the order of 700 nm/RIU (refractive index unit). A cavity, created by locally deflecting the two beams towards each other through overetching, is shown to improve the sensitivity by about 20%.
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Keywords
Keywords: InGaAs quantum dots; InGaAsP; nanobeam; Over-etching; Refractive index sensing; Refractive index units; slot; Slot waveguide; Two beams; Electromagnetic fields; Light refraction; Photonic crystals; Refractive index; Refractometers; Waveguides; Nanowires nanobeam; photonic crystal; slot
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Source
Proceedings of SPIE - The International Society for Optical Engineering
Type
Conference paper
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Open Access
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Restricted until
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