Fig. 5: Self-sustained operation of the CE comb laser with feedback locking. | Nature Communications

Fig. 5: Self-sustained operation of the CE comb laser with feedback locking.

From: Electrically empowered microcomb laser

Fig. 5

a Schematic of self-feedback locking of the CE comb laser. b Optical spectrum of the comb laser output at a driving current of 285 mA. c–e Optical spectrum d and optical power e of the comb laser output as a function of the RSOA driving current c. f Electrical spectrum of the 39.58-GHz beat note detected from the laser output comb, with a driving current of 60 mA. g Phase noise spectrum of the detected 39.58-GHz beat note.

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