Statistical Evaluation of PAM4 Data Center Interconnect System With Slope-Compensating Fiber Bragg Grating Tunable Dispersion Compensation Module

• DOI: 10.1109/jlt.2020.2969818
• Publication Date: 2020-01-27T20:43:15Z
• Authors: Steven Searcy; Guillaume Brochu; Sylvain Boudreau; Francois Trepanier; Mark M. Filer; Sorin Tibuleac
• Keywords: Fiber Bragg Grating

Data center interconnect (DCI) links with high data-rate direct-detection require strict chromatic dispersion compensation. One such solution which has been widely deployed is based on four-level pulse amplitude modulation (PAM4). With this application in mind, we describe detail a 50-GHz channelized fiber Bragg grating (FBG) tunable compensation module (TDCM) can compensate slope over the full C-band (4.8 THz) and thus suitable for dense wavelength division multiplexing (DWDM) PAM4 DCI systems. We then present comprehensive set of system performance results comprising 1,120 unique link measurements, to characterize combined effect statistical variations component characteristics impairments, show that approach budgeting advantageous type system. also analyze group delay ripple FBG-TDCM device corresponding impact Instead conventional phase standard deviation, introduce novel metric quantify high-frequency ripple, better correlated