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Label-free biosensing with a slot-waveguide-based ring resonator in silicon on insulator

Tom Claes (UGent) , Jordi Gironès Molera (UGent) , Katrien De Vos (UGent) , Etienne Schacht (UGent) , Roel Baets (UGent) and Peter Bienstman (UGent)
(2009) IEEE PHOTONICS JOURNAL. 1(3). p.197-204
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Abstract
We present a slot-waveguide-based ring resonator in silicon on insulator (SOI) with a footprint of only 13 mu m x 10 mu m, fabricated with optical lithography. Experiments show that it has 298 nm/RIU sensitivity and a detection limit of 4: 2 . 10(-5) RIU for changes in the refractive index of the top cladding. We prove for the first time that surface chemistry for selective label-free sensing of proteins can be applied inside a 100 nm-wide slot region and demonstrate that the application of a slot waveguide instead of a normal waveguide increases the sensitivity of an SOI ring resonator with a factor 3.5 for the detection of proteins.
Keywords
REFRACTIVE-INDEX, SENSOR, MICRORING RESONATOR, slot waveguide, silicon on insulator, Biosensor, ring resonator

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Chicago
Claes, Tom, Jordi Gironès Molera, Katrien De Vos, Etienne Schacht, Roel Baets, and Peter Bienstman. 2009. “Label-free Biosensing with a Slot-waveguide-based Ring Resonator in Silicon on Insulator.” Ieee Photonics Journal 1 (3): 197–204.
APA
Claes, T., Gironès Molera, J., De Vos, K., Schacht, E., Baets, R., & Bienstman, P. (2009). Label-free biosensing with a slot-waveguide-based ring resonator in silicon on insulator. IEEE PHOTONICS JOURNAL, 1(3), 197–204.
Vancouver
1.
Claes T, Gironès Molera J, De Vos K, Schacht E, Baets R, Bienstman P. Label-free biosensing with a slot-waveguide-based ring resonator in silicon on insulator. IEEE PHOTONICS JOURNAL. 2009;1(3):197–204.
MLA
Claes, Tom et al. “Label-free Biosensing with a Slot-waveguide-based Ring Resonator in Silicon on Insulator.” IEEE PHOTONICS JOURNAL 1.3 (2009): 197–204. Print.
@article{863381,
  abstract     = {We present a slot-waveguide-based ring resonator in silicon on insulator (SOI) with a footprint of only 13 mu m x 10 mu m, fabricated with optical lithography. Experiments show that it has 298 nm/RIU sensitivity and a detection limit of 4: 2 . 10(-5) RIU for changes in the refractive index of the top cladding. We prove for the first time that surface chemistry for selective label-free sensing of proteins can be applied inside a 100 nm-wide slot region and demonstrate that the application of a slot waveguide instead of a normal waveguide increases the sensitivity of an SOI ring resonator with a factor 3.5 for the detection of proteins.},
  author       = {Claes, Tom and Gironès Molera, Jordi and De Vos, Katrien and Schacht, Etienne and Baets, Roel and Bienstman, Peter},
  issn         = {1943-0655},
  journal      = {IEEE PHOTONICS JOURNAL},
  keywords     = {REFRACTIVE-INDEX,SENSOR,MICRORING RESONATOR,slot waveguide,silicon on insulator,Biosensor,ring resonator},
  language     = {eng},
  number       = {3},
  pages        = {197--204},
  title        = {Label-free biosensing with a slot-waveguide-based ring resonator in silicon on insulator},
  url          = {http://dx.doi.org/10.1109/JPHOT.2009.2031596},
  volume       = {1},
  year         = {2009},
}

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