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Chinese Journal of Lasers, Volume. 47, Issue 9, 906002(2020)

Optimization of RF Memory Techniques Using Optical Delay-Time Loops

Ding Zhidan1,2, Yang Fei1, Zhao Jiejun1,2, Wu Rui1,2, and Cai Haiwen1,2
Author Affiliations
  • 1Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2University of Chinese Academy of Sciences, Beijing 100049, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (17)
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    Figures & Tables(9)
    Several structures of photonic RF memory

    Fig. 1. Several structures of photonic RF memory

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    Parameter relation of the frequency shifting loop based structure. (a) Signal power and noise power versus number of circulations; (b) SNR degradation versus number of circulations

    Fig. 2. Parameter relation of the frequency shifting loop based structure. (a) Signal power and noise power versus number of circulations; (b) SNR degradation versus number of circulations

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    Time-domain display on the spectrum analyzer measuring RF pulses and noise. (a) RF pulses; (b) noise

    Fig. 3. Time-domain display on the spectrum analyzer measuring RF pulses and noise. (a) RF pulses; (b) noise

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    Response time of AOM and time-gated SOA

    Fig. 4. Response time of AOM and time-gated SOA

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    Parameter relation of the time-gated SOA based structure. (a) Signal power and noise power versus number of circulations; (b) SNR degradation versus number of circulations

    Fig. 5. Parameter relation of the time-gated SOA based structure. (a) Signal power and noise power versus number of circulations; (b) SNR degradation versus number of circulations

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    Storage ability of RF pulses with different pulse widths

    Fig. 6. Storage ability of RF pulses with different pulse widths

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    Cascaded storage structure

    Fig. 7. Cascaded storage structure

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    Time-domain display on the spectrum analyzer measuring 200 ns RF pulses using a cascaded storage structure. (a) Time-domain spectrum; (b) frequency spectrum of stored RF pulse after 500 μs

    Fig. 8. Time-domain display on the spectrum analyzer measuring 200 ns RF pulses using a cascaded storage structure. (a) Time-domain spectrum; (b) frequency spectrum of stored RF pulse after 500 μs

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    • Table 1. Comparison of main parameters of the memory structures

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      Table 1. Comparison of main parameters of the memory structures

      StructureAdaptivepulse widthHigh resolutionstorageLong-timestorageSystemcomplexityApplication scenario
      AOM basedmemory structureMediumWeakHighMedium complexLong-time storage,wide pulse width
      Time-gated SOAbased structureWeakStrongWeakSimple, low costHigh resolution storage,narrow pulse width
      Cascaded structureStrongStrongStrongComplex, high costMultifunctional storage
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    Ding Zhidan, Yang Fei, Zhao Jiejun, Wu Rui, Cai Haiwen. Optimization of RF Memory Techniques Using Optical Delay-Time Loops[J]. Chinese Journal of Lasers, 2020, 47(9): 906002

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    Paper Information

    Category: Fiber optics and optical communication

    Received: Mar. 23, 2020

    Accepted: --

    Published Online: Sep. 16, 2020

    The Author Email:

    DOI:10.3788/CJL202047.0906002

    Topics

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