Integrated transversal equalizers in high-speed fiber-optic systems
Integrated transversal equalizers in high-speed fiber-optic systems
复制标题
高速光纤系统中的集成横向均衡器
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Hajimiri
中科院分区：
文献类型：
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作者：
Hui Wu;J. Tierno;P. Pepeljugoski;J. Schaub;S. Gowda;J. Kash;A. Hajimiri
多模光纤中由模间色散引起的码间干扰（ISI）是限制高速多模光纤链路局域网应用中可达到的数据速率或传输距离的主要因素。与光域和其他电域色散补偿方法相比，基于分布式电路技术的横向滤波器均衡技术是一种低功耗、低成本的解决方案。详细介绍了集成分布式横向均衡器的设计，重点是延迟线和增益级。这七抽头分布式横向均衡器原型已实现在商业0.18-/spl μ/m SiGe BiCMOS工艺为10 Gb/s的多模光纤链路。一个七抽头的分布式横向均衡器将10 Gb/s信号在50 μ m多模光纤上传输800 m后的码间干扰从5 dB降低到1.38 dB，误码率从10/sup-5/降低到10/sup-12/以下。
Intersymbol interference (ISI) caused by intermodal dispersion in multimode fibers is the major limiting factor in the achievable data rate or transmission distance in high-speed multimode fiber-optic links for local area networks applications. Compared with optical-domain and other electrical-domain dispersion compensation methods, equalization with transversal filters based on distributed circuit techniques presents a cost-effective and low-power solution. The design of integrated distributed transversal equalizers is described in detail with focus on delay lines and gain stages. This seven-tap distributed transversal equalizer prototype has been implemented in a commercial 0.18-/spl mu/m SiGe BiCMOS process for 10-Gb/s multimode fiber-optic links. A seven-tap distributed transversal equalizer reduces the ISI of a 10-Gb/s signal after 800 m of 50-/spl mu/m multimode fiber from 5 to 1.38 dB, and improves the bit-error rate from about 10/sup -5/ to less than 10/sup -12/.