We report the holographic fabrication of designed defect lines in photonic crystal lattices through phase engineering using a spatial light modulator (SLM). The diffracted beams from the SLM not only carry the defect's content but also the defect related phase-shifting information. The phase-shifting induced lattice shifting in photonic lattices around the… (More)
Novel graphene-based tunable plasmonic metamaterials featuring single and multiple transparency windows are numerically studied in this paper. The designed structures consist of a graphene layer perforated with quadrupole slot structures and dolmen-like slot structures printed on a substrate. Specifically, the graphene-based quadrupole slot structure can… (More)
In this paper, we have systematically studied the holographic fabrication of three-dimensional (3D) structures using a single 3D printed reflective optical element (ROE), taking advantage of the ease of design and 3D printing of the ROE. The reflective surface was setup at non-Brewster angles to reflect both sand p-polarized beams for the interference. The… (More)
1 We have designed, fabricated and characterized dual-wavelength metasurfaces that function at two assigned terahertz wavelengths with independent phase and amplitude control at each wavelength. Specifically, we have designed a dual-wavelength achromatic metasurface-based deflector deflecting the incident wave to the same direction at two selected… (More)
In this paper, the state-of-the-art quasi-conformal mapping (QCM) transformation optics technique is studied to design high performance electromagnetic devices which can be widely applied in the fields of microwaves and optics. At first, novel plasmonic wave manipulator is designed, which can manipulate the transmission of plasmonic waves efficiently.… (More)
We report a waveguide gap structure for nonlinear coupling, written in chalcognide glass with an ultrafast laser. The coupling efficiency between two waveguides is enhanced by the self focusing of shorter and stronger input pulse.
In this paper, we report the development of an integrated two-layer phase mask for five-beam holographic fabrication of three-dimensional photonic crystal templates.
Penrose-type photonic quasi-periodic crystals are fabricated through 5 or 6 beam holographic lithography using a lab-made phase mask. The quasi-crystal structure is confirmed through diffraction patterns showing ten-fold symmetry.
This paper presents a laser-assisted chemical vapor deposition of silicon thin film and silicon thin film long-period gratings inside a two-hole fiber and photonic crystal fiber with hollow cores.