Asynchronous vector solitons based dual-comb in a fiber laser mode-locked by GO-COOH SA. (October 2022)

• Record Type: Journal Article
• Authors: Tao, Jianing; Lin, Qimeng; Yan, Li; Hou, Lei; Lu, Baole; Bai, Jintao
• Is Part Of: Optics & laser technology. Volume 154(2022)
• Publication Date: 2022-10
• Subjects: Dual-comb -- Asynchronous vector solitons -- Stable repetition frequency difference; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2022.108308
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: Influence of intracavity polarization-maintaining fiber parameters on the dual-comb fiber laser is deduced. Dual-comb laser has stable repetition frequency difference. Repetition frequency difference allows for a wide range of adjustment. Abstract: We design a stable polarization-multiplexed dual-comb source (DCS) by deriving the effect of the introduced birefringence on the repetition frequency difference (Δfrep ). There is no phase-locking device in the DCS. Carboxy-functional graphene oxide saturable absorber (GO-COOH SA) is prepared using the liquid phase exfoliation method. The polarization-maintaining fiber (PMF) introduces large birefringence, which produces asynchronous vector solitons (AVSs) with a stable Δfrep . We record and analyze the Δfrep from 79 Hz to 656 Hz. The interferograms of the dual-comb demonstrate its potential in applications. Meanwhile, we separately vary the length of the PMF and the repetition frequency of the laser to discuss the effect of these two parameters on the Δfrep . After 15 min of testing, DCS displays excellent stability, our work will facilitate the design of dual-comb lasers and enrich the study of AVSs.