Design guidelines for optical resonator biochemical sensors

Design guidelines for optical resonator biochemical sensors

In this paper, we propose a design tool for dielectric optical resonator-based biochemical refractometry sensors. Analagous to the widely accepted photodetector figure-of-merit, the detectivity D*, we introduce a new sensor system figure of merit, the time-normalized sensitivity S*, to enable quantitative, cross-technology-platform comparison between resonator sensors with distinctive device de...

Silicon-Nitride-Based Integrated Optofluidic Biochemical Sensors Using a Coupled-Resonator Optical Waveguide

Silicon nitride (SiN) is a promising material platform for integrating photonic components andmicrofluidic channels on a chip for label-free, optical biochemical sensing applications in the visible to near-infrared wavelengths. The chip-scale SiN-based optofluidic sensors can be compact due to a relatively high refractive index contrast between SiN and the fluidic medium, and low-cost due to th...

Optical Slot-Waveguide Based Biochemical Sensors

Slot-waveguides allow light to be guided and strongly confined inside a nanometer-scale region of low refractive index. Thus stronger light-analyte interaction can be obtained as compared to that achievable by a conventional waveguide, in which the propagating beam is confined to the high-refractive-index core of the waveguide. In addition, slot-waveguides can be fabricated by employing CMOS co...

Overview of novel integrated optical ring resonator bio/chemical sensors

In parallel to a stand-alone microsphere resonator and a planar ring resonator on a wafer, the liquid core optical ring resonator (LCORR) is regarded as the third type of ring resonator that integrates microfluidics with state-of-the-art photonics. The LCORR employs a micro-sized glass capillary with a wall thickness of a few microns. The circular cross section of the capillary forms a ring res...

Optical Chemical Sensors: Design and Applications