Silicon photonics has been an area of active research and development. Researchers have
been working on enhancing the integration density and intricacy of silicon photonic circuits …

Compact and smart optical gas sensors have attracted significant attention over the past few
decades. Among the materials used for developing such gas sensors, group-IV materials …

Portable or even on-chip detection of methane (CH4) is significant for environmental
protection and production safety. However, optical sensing systems are usually based on …

We design and fabricate a grating coupler for interfacing suspended silicon photonic
membranes with free-space optics while being compatible with single-step lithography and …

In this paper, we propose, design, and analyze a suspended slot chalcogenide glass
waveguide gas sensor in detail. Within a bandwidth from 3.0 μm to 4.4 μm, a power …

In this paper, we propose a compact optical gas sensor based on the widespread silicon-on-
insulator (SOI) technology, operating in the near-infrared (NIR) region around the 1.55 µm …

This work presents a rigorous and generic sensitivity analysis of silicon nitride on silicon
dioxide strip waveguide for virus detection. In general, by functionalizing the waveguide …

High-sensitivity and miniature volatile organic compound (VOC) sensor is considerably
significant for environment monitoring. Herein we performed the theoretical and …

On-chip optical gas sensors, which use resonant shifts of cavities to detect molecular
concentrations, have the advantages of high sensitivity, real-time detection, and compact …

Waveguides with sub-100 nm thickness offer a promising platform for sensors. We designed
and analyzed multimode interference (MMI) devices using these ultrathin platforms for use …