Giuntoni Ivano, Stolarek David, Kroushkov Dimitar I, Bruns Jürgen, Zimmermann Lars, Tillack Bernd, Petermann Klaus
Technische Universität Berlin, Fachgebiet Hochfrequenztechnik, Berlin, Germany.
Opt Express. 2012 May 7;20(10):11241-6. doi: 10.1364/OE.20.011241.
The realization of an integrated delay line using tapered Bragg gratings in a drop-filter configuration is presented. The device is fabricated on silicon-on-insulator (SOI) rib waveguides using a Deep-UV 248 nm lithography. The continuous delay tunability is achieved using the thermo-optical effect, showing experimentally that a tuning range of 450 ps can be obtained with a tuning coefficient of -51 ps/°C. Furthermore the system performance is considered, showing that an operation at a bit rate of 25 Gbit/s can be achieved, and could be extended to 80 Gbit/s with the addition of a proper dispersion compensation.
本文介绍了一种采用下降滤波器配置的渐变布拉格光栅实现集成延迟线的方法。该器件是在绝缘体上硅（SOI）肋形波导上使用深紫外248nm光刻技术制造的。利用热光效应实现了连续延迟可调性，实验表明，调谐系数为-51ps/°C时，可获得450ps的调谐范围。此外，还考虑了系统性能，结果表明该器件可实现25Gbit/s的比特率运行，通过添加适当的色散补偿，比特率可扩展至80Gbit/s。
