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光放大器对光载微波信号传输效率的改善

肖永川,王超,张浩,张亚标,庾财斌,瞿鹏飞,孙力军

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肖永川, 王超, 张浩, 张亚标, 庾财斌, 瞿鹏飞, 孙力军. 光放大器对光载微波信号传输效率的改善[J]. , 2020, 13(5): 995-1000. doi: 10.37188/CO.2019-0195
引用本文: 肖永川, 王超, 张浩, 张亚标, 庾财斌, 瞿鹏飞, 孙力军. 光放大器对光载微波信号传输效率的改善[J]. , 2020, 13(5): 995-1000.doi:10.37188/CO.2019-0195
XIAO Yong-chuan, WANG chao, ZHANG hao, ZHANG Ya-biao, YU Cai-bin, QU Peng-fei, SUN Li-jun. Improvement of transmission efficiency in microwave photonic links using EDFA[J]. Chinese Optics, 2020, 13(5): 995-1000. doi: 10.37188/CO.2019-0195
Citation: XIAO Yong-chuan, WANG chao, ZHANG hao, ZHANG Ya-biao, YU Cai-bin, QU Peng-fei, SUN Li-jun. Improvement of transmission efficiency in microwave photonic links using EDFA[J].Chinese Optics, 2020, 13(5): 995-1000.doi:10.37188/CO.2019-0195

光放大器对光载微波信号传输效率的改善

doi:10.37188/CO.2019-0195
基金项目:重庆市博士后科学基金项目(No. CSTC2019jcyj-bshx0103)
详细信息
    作者简介:

    肖永川(1987—),男,重庆人,博士,高级工程师,2015年于吉林大学获得博士学位,主要从事微波光传输与处理技术方面的研究。E-mail:xycwqy@163.com

  • 中图分类号:TN29

Improvement of transmission efficiency in microwave photonic links using EDFA

Funds:Supported by Postdoctoctoral Science Foundation of Chongqing (No. CSTC2019jcyj-bshx0103)
More Information
  • 摘要:针对现有微波光传输系统存在电光转换效率不足的问题,本文设计了一种基于调制器低偏与光放大器相结合的光发射结构,通过充分利用链路增益与光功率水平之间的平方关系以及低偏链路传输效率与光功率呈近似线性变化的特点,实现了光载微波信号传输效率的有效提升。经过测试可知,本方案较常规正交点传输方式在射频增益方面提高了13.5 dB,同时不会使噪声系数产生明显恶化,并且本方案可以采用现成产品以实现低成本制作,在电子信息装备中具有广泛的应用潜力。

  • 图 1微波光传输链路构成

    Figure 1.The structure of microwave optical transmission link

    图 2调制器出光功率及链路增益随偏置点位置的变化关系

    Figure 2.The output optical power of modulator and link RF gain varying with modulator’s bias point

    图 3光放大器有效增益与链路附加增益随偏置点位置的变化关系

    Figure 3.The gain provided by EDFA and the additional link gain varying with modulator's bias point

    图 4(a)光发射模块与(b)光电探测器

    Figure 4.(a) Optical transmitter and (b) photo-detector

    图 5不同偏置点条件下链路增益随频率的变化情况。(a)不加光放大器;(b)加光放大器;(c)在1 GHz频点处增益随偏置点位置的变化情况

    Figure 5.The RF gain versus RF frequency under the condition of different bias points. (a) Without EDFA; (b) with EDFA; (c) gain versus position of bias point at the frequency of 1 GHz.

    图 6不同偏置点条件下链路噪声系数随频率的变化情况。(a)不加光放大器;(b)加光放大器;(c)在1 GHz频点处噪声系数随偏置点位置的变化情况

    Figure 6.Noise figure versus RF frequency under the condition of different bias points. (a) Without EDFA; (b) with EDFA;(c) noise figuer versus position of bias point at the frequency of 1 GHz.

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出版历程
  • 收稿日期:2019-09-25
  • 修回日期:2019-11-11
  • 网络出版日期:2020-06-29
  • 刊出日期:2020-10-05

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