Critical‐Layered MoS<sub>2</sub> for the Enhancement of Supercontinuum Generation in Photonic Crystal Fibre

Supercontinuum generation (SCG) from silica-based photonic crystal fibers (PCFs) is of highly technological significance from microscopy to metrology, but has been hindered by silica's relatively low intrinsic optical nonlinearity. The prevailing approaches of filling PCF with nonlinear gases or liquids can endow fibre with enhanced optical nonlinearity and boosted SCG efficiency, yet these hybrids are easily plagued by fusion complexity, environmental incompatibility or transmission mode instability. Here this work presents a strategy of embedding solid-state 2D MoS<sub>2</sub> atomic layers into the air-holes of PCF to efficiently enhance SCG. This work demonstrates a 4.8 times enhancement of the nonlinear coefficient and a 70% reduction of the threshold power for SCG with one octave spanning in the MoS<sub>2</sub>-PCF hybrid. Furthermore, this work finds that the SCG enhancement is highly layer-dependent, which only manifests for a real 2D regime within the thickness of five atomic layers. Theoretical calculations reveal that the critical thickness arises from the trade-off among the layer-dependent enhancement of the nonlinear coefficient, leakage of fundamental mode and redshift of zero-dispersion wavelength. This work provides significant advances toward efficient SCG, and highlights the importance of matching an appropriate atomic layer number in the design of functional 2D material optical fibers.

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Publication Details

Journal
Advanced Materials
Published
2024-08-25
DOI
https://doi.org/10.1002/adma.202403696
Citations
6
Primary Topic
Photonic Crystal and Fiber Optics
Type
article
Field-Weighted Citation Impact
1.25

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article

Critical‐Layered MoS2 for the Enhancement of Supercontinuum Generation in Photonic Crystal Fibre

Yonggang Zuo, Zhe Kang, Guodong Xue, Zhipei Sun et al.
6 citations
Advanced Materials
Photonic Crystal and Fiber Optics
1.25
article

Critical‐Layered MoS2 for the Enhancement of Supercontinuum Generation in Photonic Crystal Fibre

Yonggang Zuo, Zhe Kang, Guodong Xue, Zhipei Sun, Wentao Yu, Kaihui Liu, Hao Hong, Ding Zhong, Xin Jiang, Can Liu, Xu Cheng, Xiao Li, Kaifeng Lin, Meng Pang, Zhongfan Liu, Jin Xie, Chang Liu
article en
6 citations

Abstract

Supercontinuum generation (SCG) from silica-based photonic crystal fibers (PCFs) is of highly technological significance from microscopy to metrology, but has been hindered by silica's relatively low intrinsic optical nonlinearity. The prevailing approaches of filling PCF with nonlinear gases or liquids can endow fibre with enhanced optical nonlinearity and boosted SCG efficiency, yet these hybrids are easily plagued by fusion complexity, environmental incompatibility or transmission mode instability. Here this work presents a strategy of embedding solid-state 2D MoS<sub>2</sub> atomic layers into the air-holes of PCF to efficiently enhance SCG. This work demonstrates a 4.8 times enhancement of the nonlinear coefficient and a 70% reduction of the threshold power for SCG with one octave spanning in the MoS<sub>2</sub>-PCF hybrid. Furthermore, this work finds that the SCG enhancement is highly layer-dependent, which only manifests for a real 2D regime within the thickness of five atomic layers. Theoretical calculations reveal that the critical thickness arises from the trade-off among the layer-dependent enhancement of the nonlinear coefficient, leakage of fundamental mode and redshift of zero-dispersion wavelength. This work provides significant advances toward efficient SCG, and highlights the importance of matching an appropriate atomic layer number in the design of functional 2D material optical fibers.

Advanced MaterialsVol. 36(40)
Kunming University of Science and Technology (CN), HES-SO University of Applied Sciences and Arts Western Switzerland (CH), Chinese Academy of Sciences (CN), Peking University (CN), Nanjing University of Science and Technology (CN), Beijing Graphene Institute (CN), Songshan Lake Materials Laboratory (CN), Shanghai Institute of Optics and Fine Mechanics (CN), Institute of Physics (CN), École Polytechnique Fédérale de Lausanne (CH), Zhejiang University (CN), Renmin University of China (CN), Aalto University (FI)
National Natural Science Foundation of China, Chinese Academy of Sciences, Beijing Municipal Science and Technology Commission, National Key Research and Development Program of China
Openalex Percentile: Top 20%
Photonic Crystal and Fiber Optics
1.25
DOIOpen Access PDFOpenAlex
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