| abstract |
An embodiment includes a sensor comprising a substrate die; a photonic ring resonator (RR) on the substrate die; a polymer, on the RR, having an affinity to a chemical analyte; a photonic waveguide on the substrate die and coupled to the RR; a laser, on the substrate die and coupled to the waveguide, to emit optical energy that operates with the RR at a resonance wavelength; and a photodetector, on the substrate die and coupled to the waveguide, to detect a change in refractive index (RI) of the RR operating with the optical energy in response to the polymer coupling to the analyte. Other embodiments are described herein. |