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Researchers Combine Photonic Filter and Modulator on a Single Chip

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Alvaro Casas Bedoya, holding a photonic chip, with Ben Eggleton at the University of Sydney

Alvaro Casas Bedoya (left) displays a photonic chip developed by a team that included Ben Eggleton at the University of Sydney Nano Institute.

Credit: Stefanie Zingsheim / The University of Sydney

Researchers at Australia's University of Sydney combined a photonic filter and modulator on a chip to enable the precise detection of signals across a wide band of radiofrequency spectrum.

In 2011, the researchers reported that Brillouin scattering held potential for high-resolution filtering. They developed manufacturing techniques to combine a chalcogenide Brillouin waveguide on a silicon chip.

More recently, the team managed to combine a photonic filter and modulator on the same type of chip, giving the experimental chip a spectral resolution of 37 megahertz and a wider bandwidth than preceding chips.

From IEEE Spectrum
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Abstracts Copyright © 2023 SmithBucklin, Washington, D.C., USA


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