Compact three-core fibers with ultra-low differential group delays for broadband mode-division multiplexing.
作者： Yunfei Wu , Kin Seng Chiang
DOI: 10.1364/OE.23.020867
关键词:
摘要: An approximate explicit condition for the achievement of zero differential group delay (DGD) in a homogeneous multicore fiber (MCF) is presented and verified numerically step-index three-core fiber. This explored study compact fibers with low DGDs. To achieve an ultra-low DGD C-band, central refractive-index dip each core proposed analyzed detail. A specific design three touching cores core-cladding index difference 0.3% yields maximum smaller than 3.2 ps/km C-band. The suitable broadband mode-division multiplexing applications approach could be applied to MCFs more cores.
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