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On-chip optical filter processes wide range of light wavelengths

Researchers at the Massachusetts Institute of Technology have designed an optical filter on a chip that is able to process optical signals from an extremely wide light spectrum simultaneously, offering greater precision and flexibility for optical communication and sensor systems. Optical filters are used to separate one light source into two outputs: unwanted wavelengthsâ€[...] READ MORE

Conformal Metasurface Coating Eliminates Crosstalk and Shrinks Waveguides

Materials’ properties exist in a continuous balance—tweaking one aspect leads to a corresponding change in another. Engineers play a constant game of balancing one characteristic against another in the push to make devices more powerful, smaller, and more energy efficient. A team of electrical engineers at Penn State have found a way to bypass some of this effect by simultaneously controlling diverse optical properties of dielectric waveguide[...] READ MORE