Paquot Yvan, Schröder Jochen, Van Erps Jürgen, Vo Trung D, Pelusi Mark D, Madden Steve, Luther-Davies Barry, Eggleton Benjamin J
Institute of Photonics and Optical Science, University of Sydney, NSW 2006, Australia.
Opt Express. 2011 Dec 5;19(25):25512-20. doi: 10.1364/OE.19.025512.
We report the demonstration of automatic higher-order dispersion compensation for the transmission of 275 fs pulses associated with a Tbaud Optical Time Division Multiplexed (OTDM) signal. Our approach achieves simultaneous automatic compensation for 2nd, 3rd and 4th order dispersion using an LCOS spectral pulse shaper (SPS) as a tunable dispersion compensator and a dispersion monitor made of a photonic-chip-based all-optical RF-spectrum analyzer. The monitoring approach uses a single parameter measurement extracted from the RF-spectrum to drive a multidimensional optimization algorithm. Because these pulses are highly sensitive to fluctuations in the GVD and higher orders of chromatic dispersion, this work represents a key result towards practical transmission of ultrashort optical pulses. The dispersion can be adapted on-the-fly for a 1.28 Tbaud signal at any place in the transmission line using a black box approach.
我们报告了与275飞秒脉冲传输相关的自动高阶色散补偿的演示，该脉冲与T波特光时分复用（OTDM）信号相关。我们的方法使用液晶硅（LCOS）光谱脉冲整形器（SPS）作为可调色散补偿器和由基于光子芯片的全光射频频谱分析仪制成的色散监测器，实现了对二阶、三阶和四阶色散的同时自动补偿。该监测方法使用从射频频谱中提取的单个参数测量值来驱动多维优化算法。由于这些脉冲对群速度色散（GVD）和高阶色散的波动高度敏感，这项工作代表了朝着超短光脉冲实际传输迈出的关键一步。使用黑箱方法，可以在传输线的任何位置实时调整1.28 T波特信号的色散。
