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Low phase noise K-band signal generation using polarization diverse single-soliton integrated microcombs
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作者 alwaleed aldhafeeri HSIAO-HSUAN CHIN +7 位作者 TRISTAN MELTON DONG IL LEE ALLEN CHU WENTING WANG MINGBIN YU PATRICK GUO-QIANG LO DIM-LEE KWONG CHEE WEI WONG 《Photonics Research》 SCIE EI CAS CSCD 2024年第6期1175-1185,共11页
Frequency microcombs with microwave and millimeter-wave repetition rates provide a compact solution for coherent communication and information processing.The implementation of these microcombs using a CMOS-compatible ... Frequency microcombs with microwave and millimeter-wave repetition rates provide a compact solution for coherent communication and information processing.The implementation of these microcombs using a CMOS-compatible platform further paves the way for large-scale photonic integration and modularity.Here,we demonstrate free-running soliton microcombs with K-band repetition rates with very low phase noise over a 4 GHz pump detuning range reaching−117(−123)dBc/Hz at 10 kHz offset for a 19.7(10)GHz carrier without active pump stabilization,exceeding commercial electronic microwave oscillators at frequency offsets above 40 kHz.The minimum laser noise to soliton microwave signal transduction factor observed is−73dB.This noise performance is achieved using a hybridized dual-mode for soliton generation to achieve passive thermal stabilization and minimal soliton spectrum shift from prior Raman scattering and dispersive wave formation.We further examine the locking of the repetition rate to an external ultrastable photonic oscillator to illustrate the feasibility of phase noise suppression below the thermorefractive noise limits of microresonator frequency combs. 展开更多
关键词 PUMP POLARIZATION MILLIMETER
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