Grating couplers integrated on Mach-Zehnder interferometric biosensors operating in the visible range
Duval, Daphné (Institut Català de Nanociència i Nanotecnologia)
Osmond, Johann (Institute of Photonic Sciences)
Dante, Stefania (Institut Català de Nanociència i Nanotecnologia)
Dominguez, Carlos (Institut de Microelectrònica de Barcelona)
Lechuga, Laura M. (Institut Català de Nanociència i Nanotecnologia)

Date:	2013
Abstract:	We present the design, fabrication, and characterization of submicronic grating couplers integrated on SiN rib waveguide Mach-Zehnder interferometers (MZIs) for biosensing applications working in the visible spectral range for both TE and TM polarizations. Depending on the waveguide structure, a maximum of 11. 5% of coupling efficiency has been experimentally obtained at 658 nm, while a limit of detection of 1. 6 × 10 in refractive index unit is achieved for the biosensor. These results represent an important milestone toward the achievement of a truly portable and multiplexed point-of-care platform using the integrated MZI sensor.
Grants:	Ministerio de Ciencia e Innovación TEC2009-09380
Rights:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Gratings ; Couplings ; Couplers ; Biosensors ; Optical waveguides ; Sensitivity
Published in:	IEEE photonics journal, Vol. 5, Issue 2 (April 2013) , art. 6476622, ISSN 1943-0655

DOI: 10.1109/JPHOT.2013.2251873

9 p, 547.3 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles