@book{ BC1519477X,
author = "Conference on Optical Fiber Communication and Institute of Electrical and Electronics Engineers",
title = "2021 Optical Fiber Communications Conference and Exhibition (OFC 2021) : San Francisco, California, USA, 6-11 June 2021",
publisher = "IEEE",
year = "2021",
URL = "https://ci.nii.ac.jp/ncid/BC1519477X"
}