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Laser & Optoelectronics Progress, Volume. 57, Issue 17, 170004(2020)

Research Progress on Free-Space Laser Time-Frequency Transfer

Yanguang Sun1,2、*, Min Xu1, Yaqing Chen3, Rui Wu2, Youzhen Gui3、**, Nan Chen3, Kang Ying2, Fei Yang2, and Haiwen Cai2、***
Author Affiliations
  • 1Science and Technology on Electronic Information Control Laboratory, Chengdu, Sichuan 610036, China
  • 2Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Key Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (9)
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    References (42)
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    Figures & Tables(9)
    Experimental setup of free-space laser time and frequency transfer of Germany[12]

    Fig. 1. Experimental setup of free-space laser time and frequency transfer of Germany[12]

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    Experimental setup of free-space laser time and frequency transfer of France[13]

    Fig. 2. Experimental setup of free-space laser time and frequency transfer of France[13]

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    Experimental setup of optical frequency comb based free-space laser time-frequency transfer of USA[14]

    Fig. 3. Experimental setup of optical frequency comb based free-space laser time-frequency transfer of USA[14]

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    Optical clock comparison based on optical two-direction time-frequency transfer[11]. (a) Schematic of free-space optical clock comparison based on frequency comb and LOS; (b) schematic of LOS

    Fig. 4. Optical clock comparison based on optical two-direction time-frequency transfer[11]. (a) Schematic of free-space optical clock comparison based on frequency comb and LOS; (b) schematic of LOS

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    Schematic of free-space optical clock synchronization based on optical frequency comb[19]

    Fig. 5. Schematic of free-space optical clock synchronization based on optical frequency comb[19]

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    Schematic of free-space optical clock synchronization based on optical frequency comb[17]. (a) Pyramid on rail; (b) retro-reflector on quadcopter

    Fig. 6. Schematic of free-space optical clock synchronization based on optical frequency comb[17]. (a) Pyramid on rail; (b) retro-reflector on quadcopter

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    Schematic of time frequency comparison of LTT[33]

    Fig. 7. Schematic of time frequency comparison of LTT[33]

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    Schematic of clock comparison of T2L2 and configuration of ground station and space payload[35]. (a) Schematic of satellite-ground time clock comparison of T2L2; (b) configuration of ground station; (c) configuration of space payload

    Fig. 8. Schematic of clock comparison of T2L2 and configuration of ground station and space payload[35]. (a) Schematic of satellite-ground time clock comparison of T2L2; (b) configuration of ground station; (c) configuration of space payload

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    • Table 1. Comparison of performance of free-space laser time-frequency transmission obtained by research units

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      Table 1. Comparison of performance of free-space laser time-frequency transmission obtained by research units

      Research unitTechnologyDistance /mTransmission signalStability
      Germany[12]Optical frequency transmission100Continuous laser1.68×10-13@1 s
      France[13]Optical frequency transmission5000Continuous laser1.3×10-14@1 s
      USA[14]OFC (optical fiber communication) transmission10OFC4×10-13@1 s
      USA[11]O-TWTFT2000OFC5×10-16@1 s
      China[23]China[25]China[31]RF (radio frequency) carried byOFC transmission RF carried by10060124RFOFCRF2×10-13@1 s8×10-14@1 s6.8×10-15@1 s
      Korea[32]OFC transmission76OFC<7×10-16@1 s
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    Yanguang Sun, Min Xu, Yaqing Chen, Rui Wu, Youzhen Gui, Nan Chen, Kang Ying, Fei Yang, Haiwen Cai. Research Progress on Free-Space Laser Time-Frequency Transfer[J]. Laser & Optoelectronics Progress, 2020, 57(17): 170004

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    Paper Information

    Category: Reviews

    Received: Nov. 18, 2019

    Accepted: Dec. 13, 2019

    Published Online: Sep. 1, 2020

    The Author Email: Sun Yanguang (ygsun@siom.ac.cn), Gui Youzhen (yzgui@siom.ac.cn), Cai Haiwen (hwcai@siom.ac.cn)

    DOI:10.3788/LOP57.170004

    Topics

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