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Acta Optica Sinica, Volume. 43, Issue 5, 0513002(2023)

Ultra-High-Bandwidth Silicon-Based Photonic Filter for Coarse Wavelength Division Multiplexing Systems

Shasha Liao1,2、*, Cong Huang1, Yuting Feng1, Wuhao Zhang1, Shuai Zhao1, and Zhenwei Liu1
Author Affiliations
  • 1School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • 2State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai 200240, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (12)
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    References (21)
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    Figures & Tables(12)
    Schematic of grating assisted contra-directional couplers. (a) Traditional grating; (b) SWG; (c) narrow waveguide

    Fig. 1. Schematic of grating assisted contra-directional couplers. (a) Traditional grating; (b) SWG; (c) narrow waveguide

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    Parameter comparison of different waveguide structures. (a) Effective refractive index varies with the wavelength; (b) electric field intensity distribution varies with the width of the waveguide

    Fig. 2. Parameter comparison of different waveguide structures. (a) Effective refractive index varies with the wavelength; (b) electric field intensity distribution varies with the width of the waveguide

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    Output spectra of the through and drop ports of broad bandwidth filter based on the narrow waveguide

    Fig. 3. Output spectra of the through and drop ports of broad bandwidth filter based on the narrow waveguide

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    Schematic of different apodization

    Fig. 4. Schematic of different apodization

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    Schematic of broad bandwidth filter after apodization

    Fig. 5. Schematic of broad bandwidth filter after apodization

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    Transmission spectra of the apodized and the uniform ultra-wide bandwidth filter

    Fig. 6. Transmission spectra of the apodized and the uniform ultra-wide bandwidth filter

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    Transmission spectra of the compact, high sidelobe rejection ratio, and broad bandwidth filter

    Fig. 7. Transmission spectra of the compact, high sidelobe rejection ratio, and broad bandwidth filter

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    Spectra of the filter varied with Gaussian coefficients α1, α2, and G. (a) Spectra on drop port under different Gaussian coefficients α1 and α2; (b) spectra on drop port by controling G

    Fig. 8. Spectra of the filter varied with Gaussian coefficients α1, α2, and G. (a) Spectra on drop port under different Gaussian coefficients α1 and α2; (b) spectra on drop port by controling G

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    Output spectra of the drop port varied with Wg1 and Wg2

    Fig. 9. Output spectra of the drop port varied with Wg1 and Wg2

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    • Table 1. Structural parameters of ultra-wide bandwidth filter

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      Table 1. Structural parameters of ultra-wide bandwidth filter

      ParameterW3 /nmW4 /nmWg1 /nmWg2 /nmα1α2Λ4 /nmN3G /nm
      Value18042096.51001.831.75386600180

    • Table 2. Structural parameters of the compact, high sidelobe rejection ratio, and broad bandwidth filter

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      Table 2. Structural parameters of the compact, high sidelobe rejection ratio, and broad bandwidth filter

      ParameterW3 /nmW4 /nmWg1 /nmWg2 /nmα1α2Λ4 /nmN3G /nm
      Value181422971003.12.5385200200

    • Table 3. Comparison of the performances of different broad bandwidth filter schemes

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      Table 3. Comparison of the performances of different broad bandwidth filter schemes

      Ref.3 dB bandwidth /nmLength /μmSidelobe suppression ration /dBInsertion loss /dBContra-directional coupling type or not
      ［12］40~10025/No
      ［13］84~40200.04No
      ［14］100~70300.5No
      ［15］33.4~1503/Yes
      ［16］11.7~730312.6Yes
      ［17］32.6~422190.26Yes
      ［18］88.1~47009.71.77Yes
      ［19］64.07~40010.50.6Yes
      Scheme 192.9~250.611.10.38Yes
      Scheme 287~9625.60.16Yes
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    Shasha Liao, Cong Huang, Yuting Feng, Wuhao Zhang, Shuai Zhao, Zhenwei Liu. Ultra-High-Bandwidth Silicon-Based Photonic Filter for Coarse Wavelength Division Multiplexing Systems[J]. Acta Optica Sinica, 2023, 43(5): 0513002

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    Paper Information

    Category: Integrated Optics

    Received: Jul. 25, 2022

    Accepted: Oct. 14, 2022

    Published Online: Mar. 13, 2023

    The Author Email: Shasha Liao (liaoss@cqupt.edu.cn)

    DOI:10.3788/AOS221523

    Topics

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