SHENZHEN, China -- ZTE Corporation (“ZTE”) (H share stock code: 0763.HK / A share stock code: 000063.SZ), a publicly-listed global provider of telecommunications equipment, network solutions and mobile devices, has achieved single carrier 400G wavelength-division multiplexing (WDM) signal transmission over 3000km, traversing 10 reconfigurable optical add-drop multiplexers (ROADMs) with an improved frequency spectrum of 4b/s/Hz (bits per second per hertz).
The transmission, carried out using patented Nyquist filtering technology, fulfills ZTE’s objective for future 400G and high-speed optical transmission - single-carrier per channel and single receiver transmission - for which ROADM is a necessary feature.
During single-carrier transmission, the speed gradually degrades as it traverses multiple ROADM components, due to the filtering effects of higher bandwidths. ZTE solved this issue by carrying out tests which proved the feasibility of single-carrier 400G deployment in an all-optical network with long-distance fibre transmission. The result of these experiments was released at ECOC,the largest European optical communications event, in September this year.
ZTE Corp. (Shenzhen: 000063; Hong Kong: 0763)