Concentrating photovoltaic (CPV) systems are a key step in expanding the use of solar
energy. Solar cells can operate at increased efficiencies under higher solar concentration …

Integrated optical chips have already been established for application in optical
communication. They also offer interesting future perspectives for integrated quantum optics …

We propose and investigate a metallic Fresnel zone plate (FZP/MFZP) implemented on a
silver-coated optical fiber facet for super-variable focusing of light, the focal point of which …

To meet the growing demand for photonic integration and device miniaturization, planar
diffractive Fresnel zone plates (FZPs) are widely applied in integrated optical systems …

A sensitive refractometric polymer micro-resonator sensor is fabricated using direct laser
writing. The design consists of two tapered waveguides that can be directly coupled by …

We propose a rigorous design method of structured gratings for out of plane mode
conversion, line focusing and manipulation of Surface Plasmon Polariton (SPP) waves …

We experimentally demonstrate plasmonic lenses working in the visible range with well
controlled focal lengths using nano-slits in an aluminum film. The fabricated lenses were …

We report on the fabrication of large-scale eight-level phase-type Fresnel zone plate arrays
(FZPAs) by femtosecond-laser direct writing technology. A high-speed galvanometer …

A theoretical analysis based on scalar diffraction theory about the recently reported focal-
shift phenomena in planar metallic nanoslit lenses is presented. Under Fresnel …

Ultrathin Fresnel lens may revolutionize current optical imaging system, leading to thinner
and lighter optoelectronic devices with a myriad of technical applications. To date …