Periodic structures with a sub‐wavelength pitch have been known since Hertz conducted his
first experiments on the polarization of electromagnetic waves. While the use of these …

On-chip mode-manipulation is one of the most important physical fundamentals for many
photonic integrated devices and circuits. In the past years, great progresses have been …

Short-wavelength mid-infrared (2–2.5 μm wave band) silicon photonics has been a growing
area to boost the applications of integrated optoelectronics in free-space optical …

We demonstrate fully-etched fiber-waveguide grating couplers with sub-wavelength gratings
showing high coupling efficiency as well as low back reflections for both transverse electric …

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 …

It is a remarkable and straightforward approach to customize the dispersion and nonlinear
properties of the photonic devices without varying the composition of the material by …

In this paper, a racetrack ring resonator design based on a subwavelength grating double
slot waveguide is presented. The proposed waveguide scheme is capable of confining the …

We present perfectly vertical grating couplers for the 220 nm silicon-on-insulator platform
incorporating subwavelength metamaterials to increase the minimum feature sizes and …

We propose a novel high-efficiency, low-reflection, and fabrication-tolerant perfectly vertical
grating coupler (PVGC) with a minimum feature size> 200 nm to allow for fabrication using …

MoS 2 is a layered quasi-2D material that can enhance effective third-order optical
nonlinearity of waveguides. In this paper, we measured the optical loss of MoS 2 on silicon …