| 基于光纤差分相移键控的色散补偿方案的研究 |
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| 引用本文： | 申静,李俊奇.基于光纤差分相移键控的色散补偿方案的研究[J].激光技术,2019,43(5):641-645. |
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| 作者姓名： | 申静 李俊奇 |
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| 作者单位： | 沈阳工业大学 信息科学与工程学院,沈阳,110870;沈阳工业大学 信息科学与工程学院,沈阳,110870 |
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| 摘 要： | 为了研究光差分相移键控(DPSK)调制格式在光纤高速传输系统中的色散补偿,利用色散补偿光纤(DCF)的色散补偿原理,对40Gbit/s光纤传输系统进行色散补偿,分析了40Gbit/s单通道光纤传输系统中3种DPSK调制格式信号的频谱特性;仿真了3种码型的色散容忍度以及3种调制格式在考虑光纤的非线性下的色散补偿方案。结果表明,光非归零码差分相移键控(NRZ-DPSK)信号具有最好的色散容忍度,但其受非线性的影响比较大;33%归零码差分相移键控(33%RZ-DPSK)信号的色散容忍度差,但其色散补偿后的效果优于NRZ-DPSK;而载波抑制归零码差分相移键控信号对色散和非线性效应都有较好的抑制;3种DPSK调制格式均在对称补偿2方案中色散补偿的效果最佳。此仿真研究对光DPSK信号在光纤中的色散补偿具有参考意义。
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| 关 键 词： | 光通信 色散补偿 差分相移键控 色散补偿光纤 色散容忍度 |
| 收稿时间： | 2018-11-08 |
Study on dispersion compensation schemes based on DPSK of fiber |
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| SHEN Jing,LI Junqi.Study on dispersion compensation schemes based on DPSK of fiber[J].Laser Technology,2019,43(5):641-645. |
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| Authors: | SHEN Jing LI Junqi |
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| Affiliation: | (School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China) |
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| Abstract: | In order to study dispersion compensation of optical differential phase shift keying (DPSK) modulation format in high-speed optical fiber transmission system, dispersion compensation principle of dispersion compensation fiber was used to compensate the dispersion of 40Gbit/s optical fiber transmission system. The spectrum characteristics of three DPSK modulation formats in 40Gbit/s single channel optical fiber transmission system were analyzed. The dispersion tolerance of three codes was simulated. When considering the nonlinearity of optical fibers, dispersion compensation schemes of three modulation schemes were simulated. The results show that, optical non-return-to-zero differential phase shift keying (NRZ-DPSK) signal has the best dispersion tolerance, but it is greatly affected by non-linearity. 33% return-to-zero differential phase shift keying signal has poor dispersion tolerance, but the effect of dispersion compensation is better than that of NRZ-DPSK. Carrier-suppressed return-to-zero differential phase shift keying signals can suppress both dispersion and nonlinearity. Three DPSK modulation schemes have the best dispersion compensation effect in symmetrical compensation scheme 2. This simulation study has reference significance for dispersion compensation of optical DPSK signal in optical fiber. |
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| Keywords: | optical communication dispersion compensation differential phase shift keying dispersion compensation fiber dispersion tolerance |
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