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Chinese Optics Letters, Volume. 16, Issue 1, 011301(2018)

Coupling length variation and multi-wavelength demultiplexing in photonic crystal waveguides

Ziming Wang1, Kang Su1, Bo Feng1, Tianhua Zhang2, Weiqing Huang1, Weicheng Cai1, Wei Xiao1, Hongfei Liu1, and Jianjun Liu1、*
Author Affiliations
  • 1Key Laboratory for Micro-/Nano- Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
  • 2SK Hynix Memory Solutions, 3103 North First Street, San Jose, CA 95134, USA
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    (a) Schematic layout of two parallel PhC coupling waveguides, and (b) a dispersion curve diagram for the PhC coupling waveguides.

    Fig. 1. (a) Schematic layout of two parallel PhC coupling waveguides, and (b) a dispersion curve diagram for the PhC coupling waveguides.

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    (Color online) Material/structure parameter dependence on the coupling length: (a) n dependence of Lc, and (b) r dependence of Lc.

    Fig. 2. (Color online) Material/structure parameter dependence on the coupling length: (a) n dependence of Lc, and (b) r dependence of Lc.

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    Dispersion curves diagram for the PhC waveguides with different material/structure parameters: (a) n=2.7, r=0.12 μm; (b) n=3.1, r=0.12 μm; (c) r=0.105 μm, n=2.95; (d) r=0.125 μm, n=2.95.

    Fig. 3. Dispersion curves diagram for the PhC waveguides with different material/structure parameters: (a) n=2.7, r=0.12  μm; (b) n=3.1, r=0.12  μm; (c) r=0.105 μm, n=2.95; (d) r=0.125  μm, n=2.95.

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    (a) Schematic of the PhC 1.31/1.55 μm WDM, (b) the output power ratios, and (c) the steady-state field evolution patterns for light waves with different λ.

    Fig. 4. (a) Schematic of the PhC 1.31/1.55 μm WDM, (b) the output power ratios, and (c) the steady-state field evolution patterns for light waves with different λ.

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    • Table 1. Some Previous PhC 1.31/1.55 μm WDMs

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      Table 1. Some Previous PhC 1.31/1.55 μm WDMs

      Refs.OPRs (dB)Lc(μm)Func.Str.
      [21]162–3DemuxLoop
      [23]155Mux/DemuxResonator/Loop
      [25]1710Mux/DemuxPeriodic dielectric self-imaging waveguides
      [26]25.8/22.914Mux/Demux1D-2D hybrid PhC waveguides
      [27]NA19Mux/DemuxMultimode interference waveguides
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    Ziming Wang, Kang Su, Bo Feng, Tianhua Zhang, Weiqing Huang, Weicheng Cai, Wei Xiao, Hongfei Liu, Jianjun Liu. Coupling length variation and multi-wavelength demultiplexing in photonic crystal waveguides[J]. Chinese Optics Letters, 2018, 16(1): 011301

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    Paper Information

    Category: Integrated Optics

    Received: Jun. 18, 2017

    Accepted: Sep. 22, 2017

    Published Online: Jul. 17, 2018

    The Author Email: Jianjun Liu (jianjun.liu@hnu.edu.cn)

    DOI:10.3788/COL201816.011301

    Topics

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