Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units

Ye, Longfang; Zhang, Wei; Ofori-Okai, Benjamin K.; Li, Weiwen; Zhuo, Jianliang; Cai, Guoxiong; Liu, Qing Huo

doi:10.1109/jlt.2018.2868129

Title: Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units

Abstract

In this study, we numerically simulate novel planar plasmonic waveguides and notch filters with excellent guiding and rejection of terahertz (THz) waves with super subwavelength confinement. Our design is based on spoof surface plasmon polaritons-surface plasmon polaritons with a frequency that has been tuned using patterned conductive surfaces. We find that by using patterns of periodically arranged spiral-shaped units, the dispersion characteristics can be engineered at will by tuning the parameters of the spirals. We find that the resulting plasmonic waveguides have much lower asymptotic frequencies and much tighter terahertz field confinement when compared with conventional rectangular-grooved plasmonic waveguides. We show it is possible to design a structure with lateral dimensions that are only 25% the size of the conventional spoof surface plasmon polariton waveguides but with the same asymptotic frequency. Finally, we combined this architecture with broadband couplers to design an ultrawideband low-pass filter with sharp roll-off (cut-off frequency at 1.29 THz) and low insertion loss (<;3 dB). Furthermore, by introducing double ring resonators based on spiral-shaped units, a planar plasmonic notch filter with rejection of more than 17 dB between 0.97 and 0.99 THz is demonstrated. Finally, the proposed waveguides and notch filters may have great potential applicationsmore »« less

Authors:

^[1]; Zhang, Wei ^[1]; Ofori-Okai, Benjamin K. ^[2];

^[1]; Zhuo, Jianliang ^[1]; Cai, Guoxiong ^[1];

^[3]

Xiamen University (China)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Duke Univ., Durham, NC (United States)

Publication Date:: 2018-08-31

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1490460

Grant/Contract Number:: AC02-76SF00515; 61601393; 11604276; 201887656; 2016J01321; 2015A030310009

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Lightwave Technology

Additional Journal Information:: Journal Volume: 36; Journal Issue: 20; Journal ID: ISSN 0733-8724

Publisher:: IEEE

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; 47 OTHER INSTRUMENTATION; Integrated optics devices; notch filters; spoof surface plasmon polaritons; terahertz (THz); waveguides

Citation Formats


                    Ye, Longfang, Zhang, Wei, Ofori-Okai, Benjamin K., Li, Weiwen, Zhuo, Jianliang, Cai, Guoxiong, and Liu, Qing Huo. Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units.  United States: N. p., 2018. 
Web.  doi:10.1109/jlt.2018.2868129.

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                    Ye, Longfang, Zhang, Wei, Ofori-Okai, Benjamin K., Li, Weiwen, Zhuo, Jianliang, Cai, Guoxiong, & Liu, Qing Huo. Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units.  United States.  https://doi.org/10.1109/jlt.2018.2868129

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                    Ye, Longfang, Zhang, Wei, Ofori-Okai, Benjamin K., Li, Weiwen, Zhuo, Jianliang, Cai, Guoxiong, and Liu, Qing Huo. Fri .  
"Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units".  United States.  https://doi.org/10.1109/jlt.2018.2868129.  https://www.osti.gov/servlets/purl/1490460.

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@article{osti_1490460,

  title        = {Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units},

  author       = {Ye, Longfang and Zhang, Wei and Ofori-Okai, Benjamin K. and Li, Weiwen and Zhuo, Jianliang and Cai, Guoxiong and Liu, Qing Huo},

  abstractNote = {In this study, we numerically simulate novel planar plasmonic waveguides and notch filters with excellent guiding and rejection of terahertz (THz) waves with super subwavelength confinement. Our design is based on spoof surface plasmon polaritons-surface plasmon polaritons with a frequency that has been tuned using patterned conductive surfaces. We find that by using patterns of periodically arranged spiral-shaped units, the dispersion characteristics can be engineered at will by tuning the parameters of the spirals. We find that the resulting plasmonic waveguides have much lower asymptotic frequencies and much tighter terahertz field confinement when compared with conventional rectangular-grooved plasmonic waveguides. We show it is possible to design a structure with lateral dimensions that are only 25% the size of the conventional spoof surface plasmon polariton waveguides but with the same asymptotic frequency. Finally, we combined this architecture with broadband couplers to design an ultrawideband low-pass filter with sharp roll-off (cut-off frequency at 1.29 THz) and low insertion loss (<;3 dB). Furthermore, by introducing double ring resonators based on spiral-shaped units, a planar plasmonic notch filter with rejection of more than 17 dB between 0.97 and 0.99 THz is demonstrated. Finally, the proposed waveguides and notch filters may have great potential applications in the promising terahertz integrated plasmonic circuits and systems.},

  doi          = {10.1109/jlt.2018.2868129},

  journal      = {Journal of Lightwave Technology},

  number       = 20,

  volume       = 36,

  place        = {United States},

  year         = {2018},

  month        = {8}

}

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https://doi.org/10.1109/jlt.2018.2868129

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Works referencing / citing this record:

Novel crest‐trough shaped spoof surface plasmon polaritons for low pass filtering applications
journal, December 2019

Anwar, Rana Sadaf; Mao, Lingfeng; Ning, Huansheng
Microwave and Optical Technology Letters, Vol. 62, Issue 4
DOI: 10.1002/mop.32210

High-efficient and low-coupling spoof surface plasmon polaritons enabled by V-shaped microstrips
journal, January 2019

Ye, Longfang; Feng, Hao; Cai, Guoxiong
Optics Express, Vol. 27, Issue 16
DOI: 10.1364/oe.27.022088

Curved terahertz surface plasmonic waveguide devices
journal, January 2020

Yuan, Mingrui; Lu, Yongchang; Zhang, Ying
Optics Express, Vol. 28, Issue 2
DOI: 10.1364/oe.385676

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Title: Super Subwavelength Guiding and Rejecting of Terahertz Spoof SPPs Enabled by Planar Plasmonic Waveguides and Notch Filters Based on Spiral-Shaped Units

Abstract

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