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Laser & Optoelectronics Progress, Volume. 57, Issue 17, 170603(2020)

Reconfigurable Triangular and Square Waveforms Generation Using Optical Polarization Division Modulation

Kun Zhang1,2、**, Shanghong Zhao1、*, Wei Jiang1,2, Tao Lin1, Guodong Wang1, and He Li1
Author Affiliations
  • 1College of Information and Navigation, Air Force Engineering University, Xi'an, Shaanxi, 710077, China
  • 2China Academy of Space Technology (CAST)-Xi'an, Xi'an, Shaanxi, 710077, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (19)
    Cited By (5)
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    Figures & Tables(11)
    Schematic of the triangular and square waveforms generator

    Fig. 1. Schematic of the triangular and square waveforms generator

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    Optical generator of triangular waveform with fundamental frequency. (a) Optical spectrum after polarizer; (b) electrical spectrum from PD; (c) generated triangular waveform at 0 to 0.5 ns; (d) generated triangular waveform at 0 to 10 ns

    Fig. 2. Optical generator of triangular waveform with fundamental frequency. (a) Optical spectrum after polarizer; (b) electrical spectrum from PD; (c) generated triangular waveform at 0 to 0.5 ns; (d) generated triangular waveform at 0 to 10 ns

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    Optical generator of square waveform with fundamental frequency. (a) Optical spectrum after polarizer; (b) electrical spectrum from PD; (c) generated square waveform at 0 to 0.5 ns; (d) generated square waveform at 0 to 10 ns

    Fig. 3. Optical generator of square waveform with fundamental frequency. (a) Optical spectrum after polarizer; (b) electrical spectrum from PD; (c) generated square waveform at 0 to 0.5 ns; (d) generated square waveform at 0 to 10 ns

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    Impact of amplitude drift on generation of the triangular waveform and square waveform with fundamental frequency. (a) Triangular waveform; (b) square waveform

    Fig. 4. Impact of amplitude drift on generation of the triangular waveform and square waveform with fundamental frequency. (a) Triangular waveform; (b) square waveform

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    Optical generator of triangular waveform with double frequency. (a) Optical spectrum in x-polarization; (b) optical spectrum in y-polarization; (c) electrical spectrum from PD; (d) generated triangular waveform at 0 to 0.5 ns; (e) generated triangular waveform at 0 to 10 ns

    Fig. 5. Optical generator of triangular waveform with double frequency. (a) Optical spectrum in x-polarization; (b) optical spectrum in y-polarization; (c) electrical spectrum from PD; (d) generated triangular waveform at 0 to 0.5 ns; (e) generated triangular waveform at 0 to 10 ns

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    Optical generator of square waveform with double frequency. (a) Optical spectrum in x-polarization; (b) optical spectrum in y-polarization; (c) electrical spectrum from PD; (d) generated square waveform at 0 to 0.5 ns; (e) generated square waveform at 0 to 10 ns

    Fig. 6. Optical generator of square waveform with double frequency. (a) Optical spectrum in x-polarization; (b) optical spectrum in y-polarization; (c) electrical spectrum from PD; (d) generated square waveform at 0 to 0.5 ns; (e) generated square waveform at 0 to 10 ns

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    Impact of amplitude drift on generation of the triangular waveform and square waveform with double frequency. (a) Triangular waveform; (b) square waveform

    Fig. 7. Impact of amplitude drift on generation of the triangular waveform and square waveform with double frequency. (a) Triangular waveform; (b) square waveform

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    • Table 1. RMSE of modulation indices and phase shifts for triangular waveform with fundamental frequency

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      Table 1. RMSE of modulation indices and phase shifts for triangular waveform with fundamental frequency

      Modulation index(error percent)1.4345(-5%)1.472(-2.5%)1.510(0%)1.548(2.5%)1.586(5%)
      RMSE0.0400.0380.0360.0370.039
      DC phase shift(error percent) /(°)85.5(-5%)87.75(-2.5%)90(0%)92.25(2.5%)94.5(5%)
      RMSE0.0410.0370.0360.0380.041

    • Table 2. RMSE of modulation indices and phase shifts for square waveform with fundamental frequency

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      Table 2. RMSE of modulation indices and phase shifts for square waveform with fundamental frequency

      Modulation index(error percent)2.185(-5%)2.242(-2.5%)2.300(0%)2.358(2.5%)2.415(5%)
      RMSE0.3390.3360.3350.3370.339
      DC phase shift(error percent) /(°)85.5(-5%)87.75(-2.5%)90(0%)92.25(2.5%)94.5(5%)
      RMSE0.3430.3390.3350.3380.342

    • Table 3. RMSE of modulation indices and phase shifts for triangular waveform with double frequency

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      Table 3. RMSE of modulation indices and phase shifts for triangular waveform with double frequency

      Modulation index(error percent)1.805(-5%)1.853(-2.5%)1.900(0%)1.948(2.5%)1.995(5%)
      RMSE0.0410.0370.0320.0330.034
      DC phase shift(error percent) /(°)171(-5%)175.5(-2.5%)180(0%)184.5(2.5%)189(5%)
      RMSE0.0450.0380.0320.0380.045

    • Table 4. RMSE of modulation indices and phase shifts for square waveform with double frequency

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      Table 4. RMSE of modulation indices and phase shifts for square waveform with double frequency

      Modulation index(error percent)2.09(-5%)2.145(-2.5%)2.2(0%)2.255(2.5%)2.31(5%)
      RMSE0.3470.3400.3340.3350.335
      DC phase shift(error percent) /(°)171(-5%)175.5(-2.5%)180(0%)184.5(2.5%)189(5%)
      RMSE0.3450.3410.3340.3390.345
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    Kun Zhang, Shanghong Zhao, Wei Jiang, Tao Lin, Guodong Wang, He Li. Reconfigurable Triangular and Square Waveforms Generation Using Optical Polarization Division Modulation[J]. Laser & Optoelectronics Progress, 2020, 57(17): 170603

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Oct. 25, 2019

    Accepted: Jan. 6, 2020

    Published Online: Sep. 1, 2020

    The Author Email: Kun Zhang (zhangkunyyd@163.com), Shanghong Zhao (zhaoshangh@aliyun.com)

    DOI:10.3788/LOP57.170603

    Topics

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