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Proceedings Paper

InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing
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Paper 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%.

Paper Details

Date Published: 1 March 2011
PDF: 8 pages
Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 79461C (1 March 2011); doi: 10.1117/12.873709
Show Author Affiliations
Bowen Wang, Eindhoven Univ. of Technology (Netherlands)
Zhejiang Univ. (China)
Mehmet A. Dündar, Eindhoven Univ. of Technology (Netherlands)
Richard Nötzel, Eindhoven Univ. of Technology (Netherlands)
Fouad Karouta, Eindhoven Univ. of Technology (Netherlands)
Sailing He, Zhejiang Univ. (China)
Rob W. van der Heijden, Eindhoven Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 7946:
Photonic and Phononic Properties of Engineered Nanostructures
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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