Enhanced femtosecond optical pulses compression in highly nonlinear photonic crystal fibers(invited)

被引：0

作者：

Hou S. ^{[1
]}

Lei J. ^{[1
]}

Wu Q. ^{[1
]}

Wang D. ^{[1
]}

Li X. ^{[1
]}

Wang H. ^{[2
]}

Cao M. ^{[2
]}

机构：

[1] School of Science, Lanzhou University of Technology, Lanzhou

[2] School of Computer and Communication, Lanzhou University of Technology, Lanzhou

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2019年 / 48卷 / 01期

关键词：

Highly nonlinearity; Photonic crystal fiber; Pulse compression; Soliton;

D O I：

10.3788/IRLA201948.0103004

中图分类号：

学科分类号：

摘要：

The soliton-effect compression of femtosecond optical pulses in highly nonlinear silica-core photonic crystal fiber at near-infrared spectrum region (especially at 850 nm) was numerically investigated by full-vector finite element method and split-step Fourier method. A novel SiO2 core photonic crystal fiber with an anomalous group velocity dispersion(β2=-50.698 ps2/km), small higher-order dispersions and high nonlinearity (γ=268.419 1 W-1/km) for efficient soliton-effect compression of femtosecond optical pulses was proposed, the nonlinear Schrodinger equation including higher-order dispersions and Raman scattering was derived. The effect of the Gaussian pulses compression in HN-PCF was numerically investigated by taking account of the fiber length and the soliton order, and the second to fifth orders dispersion were analyzed. The research results show that Q factor and compression factor are maximum at the soliton order of 8. The effect of compression is best when the input pulse's energy P0=3 357.8 W. By optimizing the geometric and optical parameters of the fiber, the high-quality ultrashort optical pulses with little pedestal energy are obtained. © 2019, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

共 17 条

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