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A broadband frequency comb shows a span greater than 250 nm in microring structures, indicating potential for advanced photonic applications.
A broadband frequency comb is demonstrated on CMOS-compatible 8-inch AlN photonics platform. From microring with intrinsic Q of 1 million, frequency comb with span > 250 nm (from 1450 nm to >1700 nm) is observed.
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Li et al. (2025) studied this question.
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