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Express"],"published-print":{"date-parts":[[2021,4,10]]},"DOI":"10.1587\/elex.18.20212001","type":"journal-article","created":{"date-parts":[[2021,3,11]],"date-time":"2021-03-11T22:07:05Z","timestamp":1615500425000},"page":"20212001-20212001","source":"Crossref","is-referenced-by-count":1,"title":["Recent progress and challenges toward ultrahigh-speed transmission beyond 10 Tbit\/s with optical Nyquist pulses"],"prefix":"10.1587","volume":"18","author":[{"given":"Masataka","family":"Nakazawa","sequence":"first","affiliation":[{"name":"Research Organization of Electrical Communication, Tohoku University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masato","family":"Yoshida","sequence":"additional","affiliation":[{"name":"Research Organization of Electrical Communication, Tohoku University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshihiko","family":"Hirooka","sequence":"additional","affiliation":[{"name":"Research Organization of Electrical Communication, Tohoku University"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"532","reference":[{"key":"1","unstructured":"[1] H.-G. Weber and M. Nakazawa eds.: <i>Ultrahigh-Speed Optical Transmission Technologies<\/i> (Springer, 2007) (DOI: 10.1007\/978-3-540-68005-5)."},{"key":"2","unstructured":"[2] I. Kaminow, <i>et al.<\/i> eds: <i>Optical Fiber Telecommunications Volume VIB: Systems and Networks<\/i> (Academic Press, 2013) (DOI: 10.1016\/b978-0-12-396960-6.00024-9)."},{"key":"3","unstructured":"[3] M. Nakazawa, <i>et al.<\/i> eds.: <i>High Spectral Density Optical Communication Technologies<\/i> (Springer, 2010) (DOI: 10.1007\/978-3-642-10419-0)."},{"key":"4","unstructured":"[4] M. Nakazawa, <i>et al.<\/i>: \u201cUltrahigh-speed \u201corthogonal\u201d TDM transmission with an optical Nyquist pulse train,\u201d Opt. Express <b>20<\/b> (2012) 1129 (DOI: 10.1364\/oe.20.001129)."},{"key":"5","unstructured":"[5] R.J. Mears, <i>et al.<\/i>: \u201cLow-noise erbium-doped fibre amplifier operating at 1.54 \u00b5m,\u201d Electron. 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