面向GPON的硅基锗探测器应用研究

南京大学学报(自然科学版) ›› 2016, Vol. 52 ›› Issue (6): 1104–.

面向GPON的硅基锗探测器应用研究

程鲁腾1，4，杨　楠1，4，杨华山1，4，刘光祖2，陈相宁3，4*，张洪国1，4*，江　伟1，4*

出版日期:2016-11-21 发布日期:2016-11-21
作者简介: 1.南京大学现代工程与应用科学学院，南京，210093；2.南京理工大学电子工程与光电技术学院，南京，210094；
3．南京大学电子科学与工程学院，南京，210093；4.南京微结构国家实验室(筹)，南京，210093
基金资助:
基金项目：国家青年千人计划
收稿日期：2016－09－29
*通讯联系人，Email：shining@nju.edu.cn，zhang.hongguo@nju.edu.cn，weijiang@nju.edu.cn

Research on the application of germanium detectors in GPON

Cheng Luteng1，4，Yang Nan1，4，Yang Huashan1，4，Liu Guangzu2，Chen Xiangning3，4*，Zhang Hongguo1，4*，Jiang Wei1，4*

Online:2016-11-21 Published:2016-11-21
About author: 1.College of Engineering and Applied Sciences，Nanjing University，Nanjing，210093，China；
2．School of Electronic and Optical Engineering，Nanjing University of Science and Technology，
Nanjing，210094，China；
3．College of Electronic Science and Engineering，Nanjing University，Nanjing，210093，China；
4．Nanjing National Laboratory of Microstructures，Nanjing 210093，China

摘要/Abstract

摘要： 锗硅探测器由于其在近红外波段有高响应度、高带宽，且与CMOS(Complementary Metal Oxide Semiconductor)工艺兼容等优良的光电特性，已经成为近几年的研究热点之一．为了研究硅基锗APD的商用通信测试指标，结合GPON(Gigabitcapable Passive Optical Networks)接入网的技术指标要求，实验研究了硅基锗探测器的光电变换特性．采用BERT搭建了可靠的硅基锗探测器测试系统，并对探测器进行了性能测试．该设计方案可靠性高，测试数据对实际应用有一定的指导意义．测试眼图表明，该探测器可以在2.5 Gbps速率下可靠检测出2电平调制符号，有在GPON光通信网络中应用的潜力．讨论了进一步降低误码率，实现低误码、高可靠性的数据通信，减小信号因内部逻辑设计而产生的误码的几种方法．其中包括采用可扩展的Aurora光纤传输协议的传输方案、集成直流平衡缓冲器(DCbalancing Buffer)的方法和加入CDR(时钟数据恢复)模块的方法．数据表明，所提出的测试方案是可行的．本试验为硅基锗探测器在GPON上应用提供可行解决方案和技术数据．

Abstract: In past several decades, silicon photonics technology has been welldeveloped and applied to optical interconnects, data communications, and sensing. Many key components, such as waveguides, modulators, isolators, detectors and lasers on silicononisolator, have been studied and reached high performance. Siliconbased germanium detectors have become a hot research topic in recent years because of their excellent photoelectric properties, such as high bandwidth, small footprint, and CMOS(Complementary Metal Oxide Semiconductor)compatibility. Recently, they have been widely applied to many opticalelectronic devices or communication systems. In this work, siliconbased germanium detectors for GPON(Gigabitcapable Passive Optical Networks)applications have been systematically studied. In order to meet the current requirements of GPON access network standard, the photoelectric conversion characteristics of the siliconbased germanium detectors have been investigated. A simple and practical testing platform utilizing a BERT(bit error rate tester)has been built up to take experimental data and characterize the photoelectric performance of germanium detectors which have important properties in practical optical communication technologies. Eye diagrams have shown that the detector can reliably perform under 2.5 Gbps rate, detecting 2level modulation symbols, which may be potentially useful in GPON optical communication networks. Several schemes of reducing bit error rate have also been discussed.The CDR(clock and data recovery)has significantly improved the eye diagram and reduced the bit error rate. Other related data or result analysis have also been measured and analyzed in the paper. Data have shown that the proposed testing scheme is feasible. This test provides a possible solution and technical data for the application of silicon based germanium detectors in GPON. Further experimental test and data analysis are in process, and may be reported in the forthcoming publications.

程鲁腾1，4，杨　楠1，4，杨华山1，4，刘光祖2，陈相宁3，4*，张洪国1，4*，江　伟1，4*. 面向GPON的硅基锗探测器应用研究
[J]. 南京大学学报(自然科学版), 2016, 52(6): 1104–.

Cheng Luteng1，4，Yang Nan1，4，Yang Huashan1，4，Liu Guangzu2，Chen Xiangning3，4*，Zhang Hongguo1，4*，Jiang Wei1，4*. Research on the application of germanium detectors in GPON
[J]. Journal of Nanjing University(Natural Sciences), 2016, 52(6): 1104–.

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