50.47-Tbit/s Standard Cladding Coupled 4-Core Fiber Transmission Over 9,150 km

• DOI: 10.1109/jlt.2021.3109890
• Publication Date: 2021-09-03T20:09:00Z
• Authors: Daiki Soma; Shohei Beppu; Yuta Wakayama; Seiya Sumita; Hidenori Takahashi; Noboru Yoshikane; Itsuro Morita; Takehiro Tsuritani; Masatoshi Suzuki
• Keywords: Cladding (metalworking); Optical fiber cable; Terabit; Fiber-Optic Communication

Since optical submarine cable systems are a part of the global communications infrastructure, their total capacity must be continuously and dramatically enlarged. Recently, methods how to maximize transmission under electrical power limitations have been studied, it has reported that single band (C-band only) system with more fiber pairs (FPs) could promising technology. This finding triggered work on cables FPs. For further increase in FPs systems, which also space existing designs, space-division multiplexing (SDM) technologies such as multi-core fibers (MCFs) multi-mode (MMFs) solutions. In particular, 125-μm standard cladding SDM attractive for early deployment since they expected high productivity mechanical reliability similar single-mode (SMFs) same diameter. this paper, we report transpacific MCF over 30-nm bandwidth using ultralow-loss coupled 4-core fibers, extending our previous work. The Q <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -factors 608 (4 core × 152 WDM) SDM/WDM channels modulated 24-Gbaud DP (dual polarization)-QPSK (quadrature phase shift keying) exceeded assumed forward error correction (FEC) limits after 9,150-km transmission. As result, 50.47 Tbit/s capacity-distance product 461.8 Pbit/s·km were achieved diameter fibers.