Review demonstrates optical and electronic solutions for mode crosstalk in space-division multiplexing, highlighting viable pathways to scale fiber-optic network transmission capacity.
Key Points
To review the principles and technological progress of space-division multiplexing in fiber-optic communications, focusing on mitigating mode crosstalk through combined optical and electronic techniques.
Evaluated electronic multiple-input–multiple-output (MIMO) equalization alongside optical group delay management to mitigate signal interference.
Assessed technological developments in passive (de)multiplexers as well as active optical amplifiers and switches.
Identified mode crosstalk as the primary performance bottleneck requiring coordinated optical management and MIMO digital signal processing.
Determined that optical approaches, including strong mode coupling and multicore designs, reduce MIMO computational complexity to practical thresholds.
Demonstrated that passive multiplexers and active components are maturing rapidly to enable scalable optical network deployment.