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:

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