Field Test of Installed High-Density Optical Fiber Cable with Multi-Core Fibers toward Practical Deployment. - Takehiro Tsuritani; Daiki Soma; Yuta Wakayama; Yuichi Miyagawa; Mikoto Takahashi; Itsuro Morita; Koichi Maeda; Kohei Kawasaki; Toshikazu Matsuura; Masayoshi Tsukamoto; Ryuichi Sugizaki (OFC, 2019)