简化相干技术研究进展  

Recent Progress in Simplified Coherent Technology

作　　者：胡山 李威 潘映梅 曾韬 罗鸣 喻煌 郭浩 HU Shan;LI Wei;PAN Yingmei;ZENG Tao;LUO Ming;YU Huang;GUO Hao(National Key Laboratory of Optical Communication Technologies and Networks,Wuhan 430220,China Information Communication Technologies Group Corporation;FiberHome Fujikura Optic Technology Co.,Ltd.,Wuhan 430070,China Information Communication Technologies Group Corporation;Wuhan Research Institute of Posts and Telecommunications,Wuhan 430074,China Information Communication Technologies Group Corporation)

机构地区：[1]中国信息通信科技集团有限公司光纤通信技术与网络全国重点实验室,武汉430220 [2]中国信息通信科技集团有限公司烽火藤仓光纤科技有限公司,武汉430070 [3]中国信息通信科技集团有限公司武汉邮电科学研究院,武汉430074

出　　处：《光通信研究》2025年第1期1-7,共7页Study on Optical Communications

基　　金：国家重点研发计划资助项目(2020YFB1806401);湖北省重点研发计划资助项目(2022BAA002);湖北省自然科学基金资助项目(2022CFB339)。

摘　　要：随着光通信技术在现代社会生产生活中的广泛应用,其应用场景日益多样化和复杂化。尤其在数据中心和宇航等领域,传统数字相干光通信接收方法的复杂度和功耗问题日益凸显。近年来,模拟相干技术因其能在保持通信质量的同时降低复杂度和功耗而备受关注。该技术通过使用模拟器件实现传统数字相干光通信接收端的部分或全部功能,从而简化了接收结构并降低了功耗。文章首先介绍了模拟相干技术的典型架构,展示了其主要组成部分;然后具体介绍了各个部分的原理、具体结构和实现方式,包括时钟与载波恢复、光域偏振解复用(偏振旋转补偿)和模拟自适应均衡;最后介绍了与模拟相干技术相近的其他简化相干技术,包括准相干接收技术、Kramers-Kronig(KK)接收技术和差分接收技术,分析了这些技术的原理,列出了目前主要的研究成果,并介绍了其各自的优缺点及应用场景。通过对模拟相干及其他简化相干技术的原理和研究现状的分析,比较了各种简化相干方式的优点和不足,阐述了简化相干技术未来应发展的方向,为未来简化相干技术的研究提供了参考。With the increasingly widespread application of optical communication technology in modern social production and life,the application scenarios of optical communication technology are becoming increasingly diverse and challenging.In energy sensitive scenarios such as data centers and aerospace,traditional digital coherent optical communication reception methods are difficult to reduce complexity and power consumption,and have obvious limitations.Analog coherent technology is a simplified coherent technology that utilizes analog devices to achieve part or all of the functions of the traditional digital coherent optical communication receiver,in order to simplify the receiver structure and reduce power consumption.Compared to traditional digital coherent optical communication receiving technology,analog coherent technology has obvious advantages in power consumption,complexity,and cost.This paper first introduces the typical architecture of analog coherent technology and demonstrates its main components.Then,the principles,specific structures,and implementation methods of each part are specifically introduced,including clock and carrier recovery,optical domain polarization demultiplexing(polarization rotation compensation),and analog adaptive equalization.Finally,other simplified coherent technology similar to analog coherent technology are introduced,including quasi coherent reception technology,Kramers-Kronig(KK)reception technology,and differential reception technology.Through the analysis of the principles and current research status of analog coherent and other simplified coherent techniques,this paper compares the advantages and disadvantages of various simplified coherent methods,elucidates the future development directions of simplified coherent technology,and provides a reference for future research on simplified coherent technology.

关 键 词：模拟相干 简化相干 功耗 数据中心 

分 类 号：TN929.11[电子电信—通信与信息系统]