40 Gbit/s directly modulated lasers: physics and application
40 Gbit/s directly modulated lasers: physics and application
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DOI：
10.1117/12.876137
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
U. Troppenz;J. Kreissl;M. Mohrle;C. Bornholdt;Wolfgang Rehbein;B. Sartorius;I. Woods;M. Schell
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文献类型：
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作者：
U. Troppenz;J. Kreissl;M. Mohrle;C. Bornholdt;Wolfgang Rehbein;B. Sartorius;I. Woods;M. Schell
低成本和紧凑的发射机是光纤通信系统中短距离和数据通信应用的关键部件。40 Gbit/s的比特率超出了传统直接调制激光器的速度限制。集成电吸收调制器（EML）的激光器是一种可能的解决方案。一个有吸引力的替代方案是被动反馈激光器（PFL）。在这里，调制带宽显着增加了一个集成反馈部分。介绍了PFL的基本物理特性和功能，以及在1300 nm和1550 nm波长区域的成功实现。系统实验验证了这些聚光电路的性能。
Low cost and compact transmitters are key components for short reach and datacom applications in fiber communication systems. Bit rates of 40 Gbit/s are beyond the speed limitation of conventional directly modulated lasers. Lasers with an integrated electro-absorption modulator (EML) represent one possible solution. An attractive alternative are Passive Feedback Lasers (PFL). Here, the modulation bandwidth is significantly increased by an integrated feedback section. Underlying physics and functionality of the PFL are presented as well as the successful realization at wavelengths in the 1300 nm and 1550 nm regions. The performance of these PFLs is demonstrated in system experiments.