is the length of SMF. In this scheme, the basic delayamong comb lines is generated by a single dispersive element, which can be kept as uniform value and not influenced by fabrication errors. Besides, this system is more flexible; for instance, the centre frequency of the filtering passband can be adjusted by simply change the length or dispersion coefficient of SMF.The DFB-driven dark-pulse Kerr comb exhibits 2-FSR comb spacing.
. However, the crucial Talbot processor used in these MPF systems is based on more complex discrete devices, which will increase the power dissipation and make the system less stable., one of the remarkable advantages of the chip-scale add-drop microring resonator array used in our work is the rapid reconfiguration of RF filtering responses.
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