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Acta Optica Sinica, Volume. 38, Issue 4, 0423001(2018)

Design on Terahertz Polarization Beam Splitter Based on Self-Collimating Effect of Photonic Crystal

Jingli Wang1、*, Yang Liu2, and Heming Chen3
Author Affiliations
  • 1 College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China;
  • 2 China Mobile Group Jiangsu Co., Ltd. Yancheng Branch, Yancheng, Jiangsu 224000, China
  • 3 Bell Honors School, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu 210023, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (14)
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    References (20)
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    Figures & Tables(14)
    (a) Self-collimating structure; (b) steady field distribution of TE and TM modes

    Fig. 1. (a) Self-collimating structure; (b) steady field distribution of TE and TM modes

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    Energy band diagram of self-collimating structure

    Fig. 2. Energy band diagram of self-collimating structure

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    Equal frequency contours of (a) TE mode and (b) TM mode in self-collimating structure

    Fig. 3. Equal frequency contours of (a) TE mode and (b) TM mode in self-collimating structure

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    Transmittance of TE and TM modes as a function of a

    Fig. 4. Transmittance of TE and TM modes as a function of a

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    Transmittance of TE and TM modes as a function of x

    Fig. 5. Transmittance of TE and TM modes as a function of x

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    (a) Separation structure; (b) steady field distribution of TE and TM modes; (c) energy band diagram of separation structure

    Fig. 6. (a) Separation structure; (b) steady field distribution of TE and TM modes; (c) energy band diagram of separation structure

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    Band gap of TE and TM modes as a function of R1

    Fig. 7. Band gap of TE and TM modes as a function of R1

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    Transmittance of TM mode as a function of R1

    Fig. 8. Transmittance of TM mode as a function of R1

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    Structure diagram of polarization beam splitter

    Fig. 9. Structure diagram of polarization beam splitter

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    Reflectivity of TE mode and transmittance of TM mode as a function of n

    Fig. 10. Reflectivity of TE mode and transmittance of TM mode as a function of n

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    Extinction ratios of TE and TM modes as a function of n

    Fig. 11. Extinction ratios of TE and TM modes as a function of n

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    Extinction ratios of TE and TM modes as a function of frequency

    Fig. 12. Extinction ratios of TE and TM modes as a function of frequency

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    Steady field distribution of (a) TE mode and (b) TM mode in THz polarization beam splitter

    Fig. 13. Steady field distribution of (a) TE mode and (b) TM mode in THz polarization beam splitter

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    • Table 1. Performance comparison of various THz polarization beam splitters

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      Table 1. Performance comparison of various THz polarization beam splitters

      ItemClassificationBandwidth /THzSize
      ReportTHz polarization beam splitter based on grating[19]0.2-1.51 cm×1 cm
      THz polarization beam splitter based on dual core fiber[11-13]0.14[11]Coupling length less than 15 cm
      0.07[12]Coupling length less than 1.8 cm
      0.8-2.5[13]Separation length 0.4-33.56 cm
      THz polarization beam splitter based on photonic crystal[15-17]1[15]3.15 mm×1.68 mm
      0.03[16]2.58 mm×0.54 mm
      0.0009[17]1.02 mm×0.99 mm
      ProposedPhotonic crystal THz polarization beam splitter based on self-collimation effect2.9-3.01650 μm×650 μm
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    Jingli Wang, Yang Liu, Heming Chen. Design on Terahertz Polarization Beam Splitter Based on Self-Collimating Effect of Photonic Crystal[J]. Acta Optica Sinica, 2018, 38(4): 0423001

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    Paper Information

    Category: Optical Devices

    Received: Sep. 30, 2017

    Accepted: --

    Published Online: Jul. 10, 2018

    The Author Email: Wang Jingli (jlwang@njupt.edu.cn)

    DOI:10.3788/AOS201838.0423001

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology