J Hall-T Hänsch 2005 (Nobel 2005) optical-frequency-comb; modern modern foundational + 2024 chip-scale microcombs + soliton-microcomb DWDM.
J Hall-T Hänsch 2005 (Nobel 2005) optical-frequency-comb; modern modern foundational + 2024 chip-scale microcombs + soliton-microcomb DWDM.