Grating Couplers Integrated on Mach-Zehnder Interferometric Biosensors Operating in the Visible Range
AU:
Duval, D; Osmond, J; Dante, S; Dominguez, C; Lechuga, LM
SO:
IEEE PHOTONICS JOURNAL
GTQ Authors:
Research Lines:
Opt(Bio)Chemical sensors
Research Lines:
Solid State Light Emitters
VL:
5
IS:
2
BP:
3700108
PY:
2013
SN:
1943-0655
IF:
2.36
Year IF:
2012
Abstract:
We present the design, fabrication, and characterization of submicronic grating couplers integrated on Si3N4 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 x 10(-7) 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.
DT:
Article en revistes indexades
Percentil:
HIGH
Percentil Year:
2012
Category:
OPTICS 
