Automatic DGD and GVD compensation at 640 Gb/s based on scalar radio-frequency spectrum measurement

作者：Paquot Yvan^*; Schroeder Jochen; Palushani Evarist; Neo Richard; Oxenlowe Leif K; Madden Steve; Choi Duk Yong; Luther Davies Barry; Pelusi Mark D; Eggleton Benjamin J

来源：Applied Optics, 2013, 52(9): 1919-1927.

DOI：10.1364/AO.52.001919

We demonstrate what we believe to be the first real-time impairment-cancellation system for group-velocity dispersion (GVD) and differential group delay (DGD) for a 640 Gb/s single-channel signal. Simultaneous compensation of two independent parameters is demonstrated by feedback control of separate GVD and DGD compensators using an impairment monitor based on an integrated all-optical radio-frequency (RF) spectrum analyzer. We show that low-bandwidth measurement of only a single tone in the RF spectrum is sufficient for automatic compensation for multiple degrees of freedom using a multivariate optimization scheme.

• 出版日期2013-3-20