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journal article·2024-10Open access

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

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

Advanced Materials· Volume 36· Issue 40
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Source abstract

Abstract

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 MoS2 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 MoS2‐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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Research context

Nanomaterials

OpenAlex topics: Photonic Crystal and Fiber Optics · Advanced Fiber Optic Sensors · Optical Network Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano‐optoelectronics, School of Physics Peking University Beijing 100871 China

Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 China

Beijing Graphene Institute (BGI) Beijing 100095 China

Group for Fibre Optics École Polytechnique Fédérale de Lausanne (EPFL) Lausanne 1015 Switzerland

Haute Ecole ARC Ingénierie University of Applied Sciences of Western Switzerland Saint‐Imier 2610 Switzerland

Department of Physics Renmin University of China Beijing 100872 China

Institute of Interdisciplinary Physical Sciences, School of Physics Nanjing University of Science and Technology Nanjing 210094 China

Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 China

Innovation and Integration Center of New Laser Technology, Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China

Russell Centre for Advanced Lightwave Science Shanghai Institute of Optics and Fine Mechanics and Hangzhou Institute of Optics and Fine Mechanics Hangzhou 311421 China

QTF Center of Excellence, Department of Electronics and Nanoengineering Aalto University Espoo 02150 Finland

Centre for Optical and Electromagnetic Research, College of Optical Science and Engineering, National Engineering Research Center for Optical Instruments, Ningbo Innovation Center Zhejiang University Hangzhou 310058 China

Interdisciplinary Institute of Light‐Element Quantum Materials and Research Centre for Light‐Element Advanced Materials Peking University Beijing 100871 China

Songshan Lake Materials Lab, Institute of Physics Chinese Academy of Sciences Dongguan 523808 China

Center for Nanochemistry, College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

Funding

National Natural Science Foundation of China · National Key Research and Development Program of China · Chinese Academy of Sciences · Beijing Municipal Science and Technology Commission, Adminitrative Commission of Zhongguancun Science Park

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