Nanophotonics has garnered intensive attention due to its unique capabilities in molding the
flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated …

Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

Thanks to advanced semiconductor microfabrication technology, chip-scale integration and
miniaturization of lab-on-a-chip components, silicon-based optical biosensors have made …

Optical whispering-gallery mode (WGM) microresonators, confining resonant photons in a
microscale volume for long periods of time, strongly enhance light-matter interactions …

While silicon photonic resonant cavities have been widely investigated for biosensing
applications, enhancing their sensitivity and detection limit continues to be an area of active …

The arrival of the big data era has driven the rapid development of high-speed optical
signaling and processing, ranging from long-haul optical communication links to short-reach …

We review the most important achievements published in the last five years in the field of
silicon-based optical biosensors. We focus specially on label-free optical biosensors and …

The detection techniques used in biosensors can be broadly classified into label-based and
label-free. Label-based detection relies on the specific properties of labels for detecting a …

Nanophotonics, manipulating light–matter interactions at the nanoscale, is an appealing
technology for diversified biochemical and physical sensing applications. Guided-wave …

Standard silicon photonic strip waveguides offer a high intrinsic refractive index contrast; this
permits strong light confinement, leading to compact bends, which in turn facilitates the …