Mode Characterization of Ring Core Fibers for SDM Transmission

In this paper, the modal characteristics of ring core fibers (RCFs) have been studied and a comprehensive review of recent work of ring core fibers is presented. Next, we investigate the ring core fiber parameters and their effects on the design performance in terms of effective mode index, mode group delay, mode field diameter, and differential group delay. Finally, A RCF design considerations for achieving high mode channel count and low crosstalk performances in weakly coupled MIMO transmission have been examined.