Slow-Nonlinearity Assisted Supercontinuum Generation in a CS2-Core Photonic Crystal Fiber

Kang, Zhe, Xu, Feng, Yuan, Jinhui, Li, Feng, Yan, Binbin, Zhou, Xian, Wu, Qiang, Wang, Kuiru, Sang, Xinzhu, Long, Keping and Yu, Chongxiu (2019) Slow-Nonlinearity Assisted Supercontinuum Generation in a CS2-Core Photonic Crystal Fiber. IEEE Journal of Quantum Electronics, 55 (2). p. 6800209. ISSN 0018-9197

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In this paper, we theoretically investigate the supercontinuum generations (SCGs) in a carbon disulfide (CS 2 )-core photonic crystal fiber (PCF). We show that the intrinsic slow nonlinearity of CS 2 plays a significant role to control the soliton fission process. The initiation of the soliton fission process can be distinctly delayed. More importantly, the transition between the smooth soliton fission and the sub-solitons’ chaotic-like interference is sufficiently extended so that the optical spectrum can keep broadening continuously while still maintaining a smooth spectral profile. When pumping a designed CS 2 -core PCF at wavelength $1.55~\mu \text{m}$ in the anomalous dispersion region, we obtain temperature-controllable and highly coherent SCs spanning over one octave at the −30-dB spectral intensity. The unique feature of large slow nonlinearity and the controllable dispersion and nonlinearity of CS 2 -core PCF confirm that as a versatile platform for highly coherent and octave-spanning SCGs.

Item Type: Article
Uncontrolled Keywords: Dispersion, Coherence, Optical pumping, Optical solitons, Fiber nonlinear optics
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 28 Mar 2019 16:14
Last Modified: 01 Aug 2021 12:20

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