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Abstract <p>The generation of supercontinuum (SC) in highly nonlinear fibers pumped by noise-like pulses with linear frequency modulation is demonstrated. The zero-dispersion wavelength λ<sub>zwd</sub> of the nonlinear waveguides varied in the range of 1.48–2.3 µm. A fiber ring laser with passive mode locking based on nonlinear polarization rotation was used as the pulse source, generating linear frequency modulation noise-like pulses with an optical spectrum width of 15 nm at the −3 dB level. During amplification, the energy of noise-like pulses reached 277 nJ. Supercontinuum generation with an optical spectrum covering the range from 1104 to 2123 nm was obtained at the output of a 3-meter-long highly nonlinear fiber with a zero-dispersion wavelength of 1.48 µm.</p>

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Supercontinuum Generation by Amplified Linear-Frequency Modulation Noise-Like Pulses in Quartz-Based Optical Fiber with Different Dispersion Characteristics

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • I. A. Volkov,
  • A. V. Sudin,
  • V. A. Kamynin,
  • S. N. Ushakov,
  • K. N. Nishchev,
  • V. B. Tsvetkov,
  • M. E. Likhachev

摘要

Abstract

The generation of supercontinuum (SC) in highly nonlinear fibers pumped by noise-like pulses with linear frequency modulation is demonstrated. The zero-dispersion wavelength λzwd of the nonlinear waveguides varied in the range of 1.48–2.3 µm. A fiber ring laser with passive mode locking based on nonlinear polarization rotation was used as the pulse source, generating linear frequency modulation noise-like pulses with an optical spectrum width of 15 nm at the −3 dB level. During amplification, the energy of noise-like pulses reached 277 nJ. Supercontinuum generation with an optical spectrum covering the range from 1104 to 2123 nm was obtained at the output of a 3-meter-long highly nonlinear fiber with a zero-dispersion wavelength of 1.48 µm.