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We have demonstrated mode division multiplexed transmission using a space-optics based mode multiplexer/demultiplexer. In the experiment, 10 Gb/s NRZ-OOK signal and interfering CW light were simultaneously transmitted through a 2km-long two-mode fiber with BER<10−9.
A design concept of few-mode multicore fiber is presented. Cores with a step-index profile are designed to support two LP modes over the C band and the L band with a large effective area larger than 110 . The pitch of cores is determined regarding the inter-core crosstalk related to the mode. The two LP modes multicore fibers with four cores and seven cores show a relative...
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