Sensitive Label-Free Biomolecular Detection Using Thin Silicon Waveguides
Figure 9
Surface adsorption measurements using the sensors to monitor the affinity reaction between streptavidin and the biotinylated waveguide surface. (a) Measured shift in the resonance wavelength for a 1.3-mm-long double spiral ring resonator sensor. (b) Measured intensity change (grey) and phase shift (black) of an MZI sensor with a 2-mm-long double spiral sensing arm.
