| DPSK接收端窄带滤波器带宽的研究 |
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| 引用本文： | 桂文清,佟首峰,江伦. DPSK接收端窄带滤波器带宽的研究[J]. 长春理工大学学报(自然科学版), 2015, 0(1): 21-24. DOI: 10.3969/j.issn.1672-9870.2015.01.006 |
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| 作者姓名： | 桂文清 佟首峰 江伦 |
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| 作者单位： | 长春理工大学 空间光电技术研究所,长春,130022 |
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| 摘 要： | 通过使用Optisystem光通信软件设计了DPSK光通信接收端，信号光通过光前置放大器放大、窄带滤波器滤波、马赫哲德干涉仪延迟解调、平衡探测器探测、低通滤波器滤波和数据恢复后分析其误码率；通过该DPSK接收端仿真模型，研究通信速率在10Gb/s、信号光功率为-42dBm时，通过噪声系数为3.2dB的光前置放大器使得信号光增益达到约40dB后，对不同滤波器分别进行带宽与误码率关系的仿真研究，得出了在使用不同滤波器时的最佳带宽，对后续实验中滤波器及其带宽的选择具有重要指导意义。
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| 关 键 词： | DPSK通信 窄带滤波器 带宽 误码率 |
Research on Narrow-band Filter Bandwidth for DPSK Receiver |
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| GUI Wenqing,TONG Shoufeng,JIANG Lun. Research on Narrow-band Filter Bandwidth for DPSK Receiver[J]. Journal of Changchun University of Science and Technology, 2015, 0(1): 21-24. DOI: 10.3969/j.issn.1672-9870.2015.01.006 |
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| Authors: | GUI Wenqing TONG Shoufeng JIANG Lun |
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| Affiliation: | GUI Wenqing;TONG Shoufeng;JIANG Lun;Institute of Space Photoelectricity Technology,Changchun University of Science and Technology; |
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| Abstract: | The simulation model of differential phase shift keying (DPSK) optical communication receiver was designed by optisystem which is a optical communication software;the signal light was amplified by optical preamplifier and fil-tered by optical narrowband filter;and demodulated by Mach-Zehnder delay interferometer;and detected by the bal-anced detection;and filtered by low pass filter;and the bit error rate (BER) is analyzed after data recovery in this simulation model. With this DPSK optical communication receiver simulation model,in this paper,when communication rate is 10Gbps and the power of DPSK signal light is about -42 dBm, the gain of the signal light is up to about 40 dB by using a preamplifier which noise figure is 3.2 dB;and then the relationship between bandwidth and bit error rate of different filters were simulated and studied;and the result of optimum bandwidth of different filter was got. There were some guiding significance for subsequent experiments in the kind of selecting optical narrow band filter and its bandwidth. |
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| Keywords: | DPSK communication narrowband filter bandwidth bit error rate (BER) |
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