Optical gas sensors play an increasingly important role in many applications. Sensing
techniques based on mid-infrared absorption spectroscopy offer excellent stability …

The emergence of silicon photonics over the past two decades has established silicon as a
preferred substrate platform for photonic integration. While most silicon-based photonic …

Silicon photonic integrated circuits for telecommunication and data centers have been well
studied in the past decade, and now most related efforts have been progressing toward …

Nanophotonic waveguides that implement long optical pathlengths on chips are promising
to enable chip-scale gas sensors. Nevertheless, current absorption-based waveguide …

This article presents a study on the optical and dispersion characteristics of a group of thin
films with exciting potential for optical applications. Thermally evaporated aS 35− x Ge 15 Sn …

Germanium (Ge) has played a key role in silicon photonics as an enabling material for
datacom applications. Indeed, the unique properties of Ge have been leveraged to develop …

Packaging of photonic integrated circuit (PIC) chips is an essential and critical step before
they can be integrated into functional optoelectronic systems. Photonic packaging is …

On-chip waveguide sensors are potential candidates for deep-space exploration because of
their high integration and low power consumption. Since the fundamental absorption of most …

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