Deterministic soliton microcombs in Cu-free photonic integrated circuits
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Researchers have developed deterministic soliton microcombs in copper-free photonic integrated circuits, a significant advancement for optical communications and precision measurements. These microcombs generate coherent light at multiple frequencies from a single laser source, enabling highly efficient data transmission and precise frequency synthesis. Studies by various teams including Kippenberg, Marin-Palomo, Riemensberger, Zhao, and Shen have contributed to this field since 2016, demonstrating applications ranging from optical communications to parallel processing and astrocomb spectroscopy. The technology promises improvements in low-power operation and extended access range for soliton generation, marking a step forward in integrated photonics.
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