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Surface lattice resonance of circular nano-array integrated on optical fiber tips |
| Jian Wu(吴坚)1,†, Gao-Jie Ye(叶高杰)2, Xiu-Yang Pang(庞修洋)1, Xuefen Kan(阚雪芬)3, Yan Lu(陆炎)3, Jian Shi(史健)4, Qiang Yu(俞强)1,5, Cheng Yin(殷澄)2,‡, and Xianping Wang(王贤平)4 |
1 College of Advanced Interdisciplinary Studies, Nanhu Laser Laboratory, Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha 410073, China;
2 College of Internet of Things Engineering, Hohai University, Changzhou 213022, China;
3 School of Transportation Engineering, Jiangsu Shipping College, Nantong 226010, China;
4 Jiangxi Key Laboratory of Photoelectronics and Telecommunication, College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China;
5 i-Lab & Key Laboratory of Nanodevices and Applications & Key Laboratory of Nanophotonic Materials and Devices, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China |
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Abstract As metallic nanoparticles are arranged to form a 2D periodic nano-array, the coupling of the localized surface plasmonic resonance (LSPR) results in the well-known phenomenon of surface lattice resonances (SLRs). We theoretically investigate the SLR effect of the circular nano-array fabricated on the fiber tips. The difference between the 2D periodic and circular periodic arrays results in different resonant characteristics. For both structures, the resonant peaks due to the SLRs shift continuously as the array structures are adjusted. For some specific arrangements, the circular nano-array may generate a single sharp resonant peak with extremely high enhancement, which originates from the collective coupling of the whole array. More interestingly, the spatial pattern of the vector near-field corresponding to the sharp peak is independent of the polarization state of the incidence, facilitating its excitation and regulation. This finding may be helpful for designing multifunctional all-fiber devices.
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Received: 16 April 2023
Revised: 22 August 2023
Accepted manuscript online: 29 August 2023
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PACS:
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07.60.Vg
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(Fiber-optic instruments)
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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61.46.Df
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(Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))
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| Fund: The authors thank to Professor Su and Dr. Luo at Hohai University for their fruitful discussions on data processing and computational simulation.This work was supported by the National Natural Science Foundation of China (Grant No.12174085), the Fundamental Research Funds for the Central Universities (Grant No.B220202018), the Changzhou Science and Technology Program (Grant No.CJ20210130), and CAS Key Laboratory of Nanodevices and Applications (Grant No.21YZ03). |
Corresponding Authors:
Jian Wu, Cheng Yin
E-mail: wujian15203@163.com;yinch@hhu.edu.cn
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Cite this article:
Jian Wu(吴坚), Gao-Jie Ye(叶高杰), Xiu-Yang Pang(庞修洋), Xuefen Kan(阚雪芬), Yan Lu(陆炎), Jian Shi(史健), Qiang Yu(俞强), Cheng Yin(殷澄), and Xianping Wang(王贤平) Surface lattice resonance of circular nano-array integrated on optical fiber tips 2023 Chin. Phys. B 32 120701
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