This review covers the recent progress made in the photonic crystal-based sensing
technology for gas sensing applications. Photonic crystal-based sensing has tremendous …

Quantitative phase imaging (QPI) utilizes the fact that the phase of an imaging field is much
more sensitive than its amplitude. As fields from the source interact with the specimen, local …

We report an integrated optical sensor of hydrogen (H 2) gas employing an SU-8 polymer
microdisk resonator coated with a palladium (Pd) layer and coupled to a single-mode optical …

A highly sensitive platform is demonstrated for hydrogen gas (H 2) sensing based on a
polymer microcylinder ring resonator (PMRR) obtained by an optical fiber coated with an …

Hydrogen has attracted attention as an alternative fuel source and as an energy storage
medium. However, the flammability of hydrogen at low concentrations makes it a safety …

Photonic integrated circuits fabricated on silicon-on-insulator platforms offer convenient
foundations to implement highly sensitive, compact, robust, and low-cost technology in …

An on-chip Mach-Zehnder interferometer (MZI) hydrogen sensor, applying a double-slot
hybrid plasmonic (DSHP) waveguide composed of a Si waveguide and two Pd disks on both …

We measured the height of Pd microdisks during H_2 exposure using epi-illumination
diffraction phase microscopy, a quantitative phase imaging technique for capturing …

In this research, we proposed a highly tunable hybrid plasmonic biosensor for identifying
molecule fingerprints of proteins in the infrared range. The device is composed of a photonic …

A photonic hydrogen gas sensor is fabricated by etching a subwavelength aperture into an
optically thick palladium film deposited on the facet of an optical fiber. Upon adsorption of …