Large-effective-area uncoupled few-mode multi-core fiber

Characteristics of few-mode multi-core fiber (FM-MCF) were numerically analyzed and experimentally confirmed. Fabricated fibers supported two-mode transmission over C-band and L-band with the effective area of about 110 μm2 at 1550 nm. The crosstalks of the fibers were estimated to be smaller than -30 dB at 1550 nm after 100-km propagation.