Abstract

A multicore fiber with two-pitch layout is proposed to overcome the trade-off between core number and a cladding diameter of a standard hexagonal layout with a single-core pitch. A fabricated ten-core fiber simultaneously realizes effective area of about $120{\mathrm{\mu m}}^2$ at $1550\mathrm{nm}$, small crosstalk, and cladding diameter of $204\mathrm{\mu m}$. The crosstalk between the center core and outer cores is about $30\mathrm{dB}$ smaller than that between outer cores. The small crosstalk of the center core would help to keep the transmission quality of the center core at the same level as that of the outer cores.

© 2011 Optical Society of America

A large effective area multi-core fiber with an optimized cladding thickness

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