Poster + Paper
26 November 2023 Dual-comb pulses constituting soliton rain trains in a wavelength multiplexed fiber laser based on single-walled carbon nanotube
Author Affiliations +
Conference Poster
Abstract
In this work, we demonstrate a single-walled carbon nanotubes-based wavelength multiplexed fiber laser, which generates dual-comb pulse in the train of soliton rain. The fiber laser cavity is manipulated in repetition frequency of 16.58 MHz, 3 dB spectral bandwidth of 8.4 nm. Two asynchronous pulses constitute the soliton rain pulse sequences, which the intensity difference is about 5.72 dB between the dual frequencies. A piece of graded-index multi-mode fiber as a filter based on the multi-mode interference effect is introduced into cavity to improving the signal to noise ratio to ~62 dB, and locate the central wavelength of the dual-comb at 1556.7 nm and 1561.5 nm. The repetition rate difference of the dual-frequency is about 169 Hz with the resolution bandwidth of 1 Hz. The time delay of the dual-frequency pulse detected by cross-correlation method is 5.78 ms, which is well matched with the results in radio frequency spectrum. Different from the stable period of the general cross-correlation signal, our experimental results show several different sub-periods due to the existence of the drifting solitons in the soliton rain sequences. Meanwhile, the number of different sub-periods in the correlation decreases from six to three as the pump power reduced from 100 mA to 97.3 mA. Our work provides a new sight into the quasi-steady multi-soliton dynamics process in fiber lasers, and will be promising solutions for interference ranging, and synchronization and timing.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Yue Zhao, Kailin Jia, Tengfei Wu, Ying Qin, Li Chen, Guoqing Hu, Huiyu Li, Guangwei Chen, and Zhehai Zhou "Dual-comb pulses constituting soliton rain trains in a wavelength multiplexed fiber laser based on single-walled carbon nanotube", Proc. SPIE 12775, Quantum and Nonlinear Optics X, 127751D (26 November 2023); https://doi.org/10.1117/12.2687290
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KEYWORDS
Fiber lasers

Solitons

Rain

Optical filters

Pulse signals

Tunable filters

Mode locking

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