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We present optoelectronic regeneration of binary phase-shift keying optical signals with a feed-forward control of a LiNbO3 intensity modulator. Bit-error-rate improvement is confirmed both in simulations and experiments.
Space-division multiplexing with multi-core fiber is a promising technology to increase a system capacity drastically. By using a combination of MCF and spectral efficient modulation format, trans-oceanic transmission with a capacity-distance product of 1.03 Ebit/s·km has been achieved.
We demonstrate 1,000-km transmission of a 160-Gbit/s QPSK signal, using a digital coherent receiver with the time-division demultiplexing function, and confirm the applicability of such a receiver to long-haul transmission systems for the first time.
We demonstrate 1,073-km transmission of 640-Gbit/s dual-polarization QPSK signals using a digital coherent receiver with the time-division demultiplexing function. The bit rate-distance product is the highest among those reported in single-carrier coherent transmission systems.
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