准相干技术在C波段25 Gbit/s光模块中的研究与应用  

Research and Application of Quasi-Coherent Technology in C-Band 25 Gbit/s Optical Transceiver

作　　者：孔令桥 卜勤练 KONG Ling-qiao;BU Qin-lian(Wuhan Research Institute of Posts and Telecommunications,Wuhan 430074,China;Accelink Technologies Co.,Ltd.,Wuhan 430205,China)

机构地区：[1]武汉邮电科学研究院,武汉430074 [2]武汉光迅科技股份有限公司,武汉430205

出　　处：《光通信研究》2021年第1期36-41,共6页Study on Optical Communications

摘　　要：针对传统C波段高速光模块传输距离过短的问题,文章对一种准相干接收技术进行了研究,结合现有25 Gbit/s光模块进行了实验,并讨论了准相干接收技术的应用方案。研究发现,准相干接收技术以外差相干检测技术为基础,具有结构简单和成本低等优点,在不使用额外的电或光色散补偿技术的前提下,准相干接收机也能有效减少色散对高速光模块传输距离的影响。实验结果表明,准相干接收机对因色散而劣化的光信号具有很强的处理能力,使用准相干接收机可以显著提高光模块的传输灵敏度,能够将采用传统强度调制技术的C波段25 Gbit/s光模块的传输距离从当前的10 km左右延长至25 km以上。In order to extend the transmission distance of the traditional C-band high-speed optical module,this paper studies a kind of quasi-coherent reception technology based on the existing 25 Gbit/s optical module,and discusses the application scheme of the quasi-coherent reception technology.It is found that the quasi-coherent receiver can effectively reduce the influence of dispersion on the transmission distance of high-speed optical module without using additional electrical or optical dispersion compensation technology.The experimental results show that the quasi-coherent receiver has strong processing ability for optical signals degraded by dispersion,and the use of the quasi-coherent receiver can significantly improve the transmission sensitivity of the optical module.The experimental results show that the quasi-coherent reception technology can extend the transmission distance of the C-band 25 Gbit/s optical module with traditional intensity modulation technology from 10 km to more than 25 km.

关 键 词：准相干接收机 C波段 25 Gbit/s光模块 色散 

分 类 号：TN256[电子电信—物理电子学]