Dichromatic Soliton-Molecule Compounds in Mode-Locked Fiber Lasers

Yudong Cui, Xiankun Yao, Xiang Hao, Qing Yang, Daru Chen, Yusheng Zhang*, Xu Liu*, Zhipei Sun, Boris A. Malomed

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Soliton “molecules”, i.e., bound states of two or several solitons, represent a fundamental concept, which manifests itself in various nonlinear systems. They are dynamically similar to chemical molecules, attracting great interest to fundamental studies and offering potential applications (such as multilevel encoding of optical data). Here, the study demonstrates a novel dichromatic soliton-molecule compounds (DSMC) built as a hybrid bound state of multiple bound soliton pulses carried by two wavelengths in a fiber laser. The DSMCs are maintained by two different binding mechanisms, viz., the self-phase modulation (SPM) interaction between temporal solitons at the same wavelength, mediated by their tails, and the cross-phase modulation (XPM) interaction between solitons at different wavelengths. They also exhibit unique temporal and spectral vibration profiles. Both static DSMCs and ones with robust internal vibrations are generated experimentally in the fiber laser, and numerically as solutions of the corresponding dissipative nonlinear model. The findings reported here expand the concept of soliton molecules and further promote their similarity to chemical molecules.

Original languageEnglish
Article number2300471
JournalLASER AND PHOTONICS REVIEWS
Volume18
Issue number6
Early online date2024
DOIs
Publication statusPublished - Jun 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • cross phase modulation
  • mode-locked fiber laser
  • real-time spectroscopy
  • soliton molecules

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