15 May
2015

ZTE Claims 400G Ultra-Long Haul Record

ZXONE 9700 S1

Shenzhen, China:

ZTE Corporation, an international provider of telecommunications, enterprise and consumer technology solutions for the Mobile Internet and OFS today announced a record-setting 400G ultra-long-haul high-speed transmission by successfully transmitting record 128.8-GBaud wavelength division multiplexing (WDM) QPSK signals over 10,130 and 6,078 kilometer terrestrial fiber links. These transmission results, once again, set a benchmark for the global optical networking industry and support the next-generation transport standard to cope with the exponential growth of IP traffic.

The successful test demonstrated the coherent transmission system with the highest electrical time division multiplexing (ETDM)-based symbol rate of 128.8-GBaud over record breaking distances, in which the single-carrier 515.2-Gb/s polarisation division multiplexing (PDM)-QPSK/9-QAM signals were transmitted over 10,130km/6,078km, respectively, over 100km spans of OFS TeraWave™ optical fiber featuring optimized effective area and low loss. It was the highest ETDM-based symbol rate recorded thus far, and the longest WDM transmission distance of single-carrier 400G signals with terrestrial span lengths (100km).

This result sets a new record for 400G transmission in both symbol rate and distance. The milestone, published recently on Optics Express (OSA), surpasses the record last year of 110 GBaud over 3000 km transmission distance of 400G set by the same group. ZTE has long been committed to R&D in 100G and 400G/1T technologies, as well as their applications. In 2010, ZTE was the first to release an overall 100G bearing solution, which provides 100G products covering switch, router, and WDM/OTN, as well as end-to-end solutions from edge layer to core layer for customers. In 2012, ZTE released a 400G/1T DWDM prototype with seven solutions designed for various network applications. ZTE has successfully deployed commercial networks and trials in 100G and beyond 100G with the mainstream operators in West Europe, East Europe, Asia Pacific, and China.