Sensors are perhaps the most important and integral components of our modern society.
With global warming and environmental pollution garnering ever-increasing attention, as …

Infrared laser-absorption spectroscopy (IR-LAS) sensors play an important role in
diagnosing and characterizing a wide range of combustion systems. Of all the laser …

We experimentally demonstrate enhanced spectral broadening of femtosecond optical
pulses after propagation through silicon-on-insulator (SOI) nanowire waveguides integrated …

The detection and measurement of gas concentrations using the characteristic optical
absorption of the gas species is important for both understanding and monitoring a variety of …

Dispersive Fourier transformation is an emerging measurement technique that overcomes
the speed limitations of traditional optical instruments and enables fast continuous single …

Optical imaging techniques are ubiquitous for the resolution of non-uniformities in gas flows.
Planar imaging techniques such as laser-induced fluorescence are well established and …

Laser absorption spectroscopy (LAS) has been rapidly developed and widely applied to
combustion diagnosis in recent decades. As a cost-effective tool for measuring multiple …

We experimentally demonstrate enhanced self-phase modulation (SPM) in silicon nitride (Si
3 N 4) waveguides integrated with 2D graphene oxide (GO) films. GO films are integrated …

Manipulation and characterization of information using ultrafast optical signals is critical for
numerous applications in telecommunications, biology, quantum information science …

In the paper, we review our work on heterogeneous III-V-on-silicon photonic components
and circuits for applications in optical communication and sensing. We elaborate on the …