WDM/SDM Transmission of 10 x 128-Gb/s PDM-QPSK over 2688-km 7-Core Fiber with a per-Fiber Net Aggregate Spectral-Efficiency Distance Product of 40,320 km-b/s/Hz
16 January 2012
We demonstrate 2688-km multi-span transmission using wavelength-division multiplexing (WDM) of ten 50-GHz spaced 128-Gb/s PDM-QPSK signals, space-division multiplexed (SDM) in a low-crosstalk 76.8-km seven-core fiber, achieving a record net aggregate per-fiberspectral-efficiency-distance product of 40,320 kmb/s/Hz. The demonstration was enabled by a novel core-to-core signal rotation scheme implemented in a 7-fold, synchronized recirculating loop apparatus. ©2011 Optical Society of America OCIS codes: (060.2330) Fiber optics communications, (060.2360) Fiber optics links and subsystems, (060.1660) Coherent communications.