Silicon chips combine light and ultrasound for better signal processing (IMAGE)
Caption
High-end wireless and cellular networks rely on light for the distribution of signals. The selective processing of such signals requires long delays: too long to support on a chip using light alone. A research team from Bar-Ilan University, Israel, and collaborators brought together light and ultrasonic waves to realize ultra-narrow filters of microwave signals, in silicon integrated circuits. The concept allows large freedom for filters design. Figure: Measured (solid) and calculated (dashed) normalized frequency responses of the filter device. The spectral width of the filter passbands is only 5 MHz.
Credit
Prof. Avi Zadok, Bar-Ilan University
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