Photonics Research, Volume. 8, Issue 8, 1342(2020)
Frequency stabilization and tuning of breathing solitons in Si3N4 microresonators
Fig. 1. (a) Scanning electron micrographs of a
Fig. 2. Evolution of the soliton generation processes during the scanning of the pump laser detuning. (a)–(d) Typical optical spectra. Four evolution stages are (a) primary comb, (b) modulation instability comb, (c) breathing soliton, and (d) stable soliton, respectively. (e)–(h) The corresponding evolution of RF spectra. Inset: the transmission spectrum of the microring when the laser frequency is scanned across the resonance mode.
Fig. 3. Features of a breathing soliton. (a) The detailed RF spectrum of a breathing soliton state. Inset: the corresponding optical spectrum. (b) The recorded fast power evolution of a single comb line around the center (1562 nm, blue curve) and in the wings (1531 nm, green curve) of the optical spectrum of a breathing soliton. Inset: the corresponding Fourier transform spectrum.
Fig. 4. (a) Simulated evolution of the intracavity power when the laser frequency is scanned across the resonance mode. The inset shows the oscillations of the power for a fixed laser frequency in the breathing soliton state. (b) Periodic spectrum evolution of a breathing soliton state. (c) RF spectra of the initial breathing soliton state (blue line) and modulated breathing soliton state (red line). The initial breathing frequency
Fig. 5. (a) Evolution of the RF spectrum when gradually increasing the modulation power from
Fig. 6. (a) Evolution of the RF spectrum centered at 262 MHz with varied
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Shuai Wan, Rui Niu, Zheng-Yu Wang, Jin-Lan Peng, Ming Li, Jin Li, Guang-Can Guo, Chang-Ling Zou, Chun-Hua Dong. Frequency stabilization and tuning of breathing solitons in Si3N4 microresonators[J]. Photonics Research, 2020, 8(8): 1342
Category: Optical Devices
Received: May. 14, 2020
Accepted: Jun. 19, 2020
Published Online: Jul. 23, 2020
The Author Email: Chun-Hua Dong (chunhua@ustc.edu.cn)