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 …

A photodetector (PD) converts optical signals into electrical ones and is widely used in
optical interconnect. High‐speed PDs are in high demand as they are necessary to meet …

Spectral sensing is increasingly used in applications ranging from industrial process
monitoring to agriculture. Sensing is usually performed by measuring reflected or transmitted …

Midinfrared (MIR), which covers numerous molecular vibrational fingerprints, has attracted
enormous research interest due to its promising potential for label-free and damage-free …

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 …

Silicon photonics is being extended from the near‐infrared window of 1.3–1.5 µm for optical
fiber communications to the mid‐infrared (mid‐IR) wavelength‐band of 2 µm or longer for …

In this article, we review our recent work on mid-infrared (mid-IR) photonic materials and
devices fabricated on silicon for on-chip sensing applications. Pedestal waveguides based …

A surface-illuminated photoconductive detector based on Ge_0. 91Sn_0. 09 quantum wells
with Ge barriers grown on a silicon substrate is demonstrated. Photodetection up to 2.2 µm …

We demonstrate a monolithic waveguide sensor integrated with a detector on-chip for mid-
infrared absorption spectroscopic sensing. The optical sensing element comprises a …

In this paper we discuss silicon-based photonic integrated circuit technology for applications
beyond the telecommunication wavelength range. Silicon-on-insulator and germanium-on …