Abstract
In this paper, a novel few-mode large-mode-area fiber is proposed. This type of fiber consists of 11 conventional cores and 8 air-hole cores circularly arranged around the center core. Few-mode condition equal to strict dual-mode here is available by appropriate adjusting on corepitch, relative refractive index difference and core radius. Large effective area of fundamental mode around 1403.561μm2 could be achieved by optimization of structural parameters. Bending loss less than 10−3dB/m is realized when effective area is over 1400μm2.
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