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Silicon-Based Optical Filter Splits Light Across a Range of Wavelengths

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Researchers present a new optical filter on a chip that can process optical signals from across a wide spectra. The filter can match the broadband coverage and precision performance of bulky dichroic filters, but can be manufactured using traditional silicon-chip fabrication methods. The filter is based on spectrally selective waveguides, which combine the broadband response of adiabatic transitions with the sharp spectral responses typically observed in interferometric filters. Researchers at Massachusetts Institute of Technology (MIT) said that the new filter can take a very broad...Read full article

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