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<p>Numerical simulation methods were used in this study to examine the generation and modulation of supercontinuum (SC) spectra using Airyprime pulses in a photonic crystal fiber (PCF) with three zero-dispersion wavelengths (ZDWs). To clarify, the influence of essential initial pulse parameters (including the truncation coefficient <i>a</i>, initial chirp <i>C</i>, and peak power <i>P</i>) on spectral broadening and pulse evolution was systematically assessed. The results demonstrate that a smaller truncation coefficient, greater initial chirp, and elevated peak power promote enhanced supercontinuum generation. Under optimized pumping conditions, specifically a central wavelength of 1064&#xa0;nm, a pulse width of 50&#xa0;fs, and a peak power of 5&#xa0;kW, a broadband and relatively flat supercontinuum spanning approximately 1000&#xa0;nm was generated. Furthermore, comparative analysis of photonic crystal fibers with one, two, and three zero-dispersion wavelengths indicated that the three zero-dispersion wavelength fiber supports greater spectral broadening due to the involvement of tunneling soliton components. In addition, comparing Airy and Airyprime pulses revealed that Airyprime pulses induce collisions in the time domain, filling the collapse structure between blue-shifted dispersive waves (B-DWs) and higher-order solitons in the frequency domain and improving the flatness of the supercontinuum. Overall, these findings establish a theoretical basis for generating and manipulating high-power mid-infrared supercontinuum spectra.</p>

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Generation and manipulation of supercontinuum in three zero-dispersion wavelengths photonic crystal fibers using airyprime pulses

  • 期刊论文

  • 发表日期：

    2026年6月19日

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  • Yingqi Fan,
  • Jiamou Wei,
  • Bing Wen,
  • Chunhui Gao,
  • Mingliang Deng,
  • Hui Wang,
  • Xiaolin Ma

摘要

Numerical simulation methods were used in this study to examine the generation and modulation of supercontinuum (SC) spectra using Airyprime pulses in a photonic crystal fiber (PCF) with three zero-dispersion wavelengths (ZDWs). To clarify, the influence of essential initial pulse parameters (including the truncation coefficient a, initial chirp C, and peak power P) on spectral broadening and pulse evolution was systematically assessed. The results demonstrate that a smaller truncation coefficient, greater initial chirp, and elevated peak power promote enhanced supercontinuum generation. Under optimized pumping conditions, specifically a central wavelength of 1064 nm, a pulse width of 50 fs, and a peak power of 5 kW, a broadband and relatively flat supercontinuum spanning approximately 1000 nm was generated. Furthermore, comparative analysis of photonic crystal fibers with one, two, and three zero-dispersion wavelengths indicated that the three zero-dispersion wavelength fiber supports greater spectral broadening due to the involvement of tunneling soliton components. In addition, comparing Airy and Airyprime pulses revealed that Airyprime pulses induce collisions in the time domain, filling the collapse structure between blue-shifted dispersive waves (B-DWs) and higher-order solitons in the frequency domain and improving the flatness of the supercontinuum. Overall, these findings establish a theoretical basis for generating and manipulating high-power mid-infrared supercontinuum spectra.