TY - JOUR
T1 - Mid-Infrared Self-Similar Pulse Compression in a Tapered Tellurite Photonic Crystal Fiber and Its Application in Supercontinuum Generation
AU - Xu, Feng
AU - Yuan, Jinhui
AU - Mei, Chao
AU - Li, Feng
AU - Kang, Zhe
AU - Yan, Binbin
AU - Zhou, Xian
AU - Wu, Qiang
AU - Wang, Kuiru
AU - Sang, Xinzhu
AU - Yu, Chongxiu
AU - Farrell, Gerald
PY - 2018/8/15
Y1 - 2018/8/15
N2 - In this paper, we design a tapered tellurite photonic crystal fiber (TTPCF) with nonlinear coefficient increasing along the propagation direction, and demonstrate the mid-infrared self-similar pulse compression of the fundamental soliton in such a TTPCF. When the variation of group-velocity dispersion, higher-order dispersion, higher-order nonlinearity, and linear loss are considered, a 1 ps pulse at wavelength 2.5 μm can be compressed to 62.16 fs after a 1.63-m long propagation, along with the negligible pedestal, compression factor Fc of 16.09, and quality factor Qc of 83.16%. Then the compressed pulse is launched into another uniform tellurite PCF, where highly coherent and octave-spanning supercontinuum (SC) is generated. Compared to the initial picosecond pulse, the compressed pulse has much larger tolerance of noise level for the SC generation. Our research results provide a promising solution to realize the fiber-based mid-infrared femtosecond pulse source for nonlinear photonics and spectroscopy.
AB - In this paper, we design a tapered tellurite photonic crystal fiber (TTPCF) with nonlinear coefficient increasing along the propagation direction, and demonstrate the mid-infrared self-similar pulse compression of the fundamental soliton in such a TTPCF. When the variation of group-velocity dispersion, higher-order dispersion, higher-order nonlinearity, and linear loss are considered, a 1 ps pulse at wavelength 2.5 μm can be compressed to 62.16 fs after a 1.63-m long propagation, along with the negligible pedestal, compression factor Fc of 16.09, and quality factor Qc of 83.16%. Then the compressed pulse is launched into another uniform tellurite PCF, where highly coherent and octave-spanning supercontinuum (SC) is generated. Compared to the initial picosecond pulse, the compressed pulse has much larger tolerance of noise level for the SC generation. Our research results provide a promising solution to realize the fiber-based mid-infrared femtosecond pulse source for nonlinear photonics and spectroscopy.
KW - Self-similar pulse compression
KW - supercontinuum (SC) generation
KW - tapered tellurite photonic crystal fiber
UR - https://www.scopus.com/pages/publications/85047228307
U2 - 10.1109/JLT.2018.2839520
DO - 10.1109/JLT.2018.2839520
M3 - Journal article
AN - SCOPUS:85047228307
SN - 0733-8724
VL - 36
SP - 3514
EP - 3521
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 16
ER -