Waveguide superlattices, a special type of waveguide arrays, can be designed to achieve very low cross talk at submicrometer/subwavelength pitches. The theoretical framework and design rationales for such waveguide superlattices will be presented in depth
Eu3 -activated red-emitting Ba2Gd2Si4O13phosphors are prepared via microwave (MW) synthesis and solid-state (SS) method. The structural and luminescent properties of phosphors are investigated by X-ray