高速空间相干光平衡探测器结构优化

发布时间：2018-07-11 10:45

本文选题：平衡探测器 + 相干光通信　；参考：《光学精密工程》2017年10期

【摘要】：分析了高速空间相干光平衡探测器的电路结构和噪声性能,明确了平衡探测器的关键技术参数与电路结构之间的关系。采用电阻取样型和双跨阻放大器(TIA)合成型结构设计了两种高速空间平衡光电探测器,并对其性能参数进行了实验验证。实验显示:两种高速空间相干光电探测器均可用于高速空间相干探测,且双TIA型电压合成型平衡探测器比电阻取样型平衡探测器具有更高的探测灵敏度和更好的抗噪声性能。在通信速率为5Gbps,误码率10~(-8)条件下电阻取样型平衡探测器实测最优探测灵敏度为-33.51dBm,双TIA型电压合成型平衡探测器实测最优灵敏度为-43.4dBm。对比Discovery公司通信速率为5Gbps的平衡探测器产品,双TIA型电压合成型探测灵敏度提高了近8dB。结果表明高速空间相干光电探测器的结构研究为创建高灵敏的高速空间相干光通信系统提供了理论基础。
[Abstract]:The circuit structure and noise performance of the high speed spatial coherent light balance detector are analyzed. The relationship between the key technical parameters of the balanced detector and the circuit structure is clarified. Two kinds of high speed space balanced photodetectors are designed by using the resistance sampling type and the double span resistance amplifier (TIA) synthetic structure, and their performance parameters are tested. The experiment shows that the two high speed spatial coherent photodetectors can be used for high speed spatial coherent detection, and the dual TIA voltage synthetic balance detector has higher detection sensitivity and better noise resistance than the resistance sampling balance detector. The resistance sampling balance is under the communication rate of 5Gbps and the bit error rate 10~ (-8). The measured detection sensitivity of the detector is -33.51dBm, and the measured optimal sensitivity of the dual TIA type voltage synthetic balance detector is -43.4dBm. compared to the equilibrium detector of 5Gbps for the communication rate of the Discovery company. The dual TIA voltage synthesis detection sensitivity improves the near 8dB. result that the structure of the high speed spatial coherent photodetector is studied. The study provides a theoretical basis for creating highly sensitive high-speed spatial coherent optical communication systems.
【作者单位】：武汉大学电子信息学院;湖北师范大学教育信息与技术学院;中国电子科技集团公司第十研究所;
【基金】：国家自然科学基金资助项目(No.11204220,No.61273053) 中国西南电子技术研究所技术创新基金资助项目(No.H15017)
【分类号】：TN15;TN929.1

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