Bidirectional optical amplifier for time transfer using bidirectional WDM transmission
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State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

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    Abstract:

    In this letter, we propose a bidirectional optical amplification scheme for fiber-optic time transfer based on bidirectional wavelength-division multiplexing (WDM) transmission. The proposed scheme employs single unidirectional erbium-doped fiber amplifier (Uni-EDFA) for commercial optical networks to implement bidirectional optical amplification. Since including isolators, the effect of backscattering due to the accumulated amplification can be efficiently suppressed by the proposed amplifier. The proposed scheme is validated over different length fiber links in laboratory. Experimental results show that the proposed amplifier can support fiber-optic time transfer over several thousands of kilometers with an additional bidirectional delay difference fluctuation at picosecond magnitude.

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DING Xuan, WU Gui-ling, ZUO Fa-xing, CHEN Jian-ping. Bidirectional optical amplifier for time transfer using bidirectional WDM transmission[J]. Optoelectronics Letters,2019,15(6):401-405

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History
  • Received:February 19,2019
  • Revised:March 26,2019
  • Online: May 01,2020
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