Alcatel-Lucent delivers 31 Tbps in submarine cable experiment

Bell Labs researchers conducted a test where they transmitted 31 Tbps over 7200 km on one fiber at its parent Alcatel-Lucent's (NYSE: ALU) Innovation City campus in Villarceaux near Paris.

Leveraging Bell Labs' 200 Gbps single-carrier data channel work, the vendor said that it achieved the 31 Tbps speeds with a "span--the distance between amplifiers maintaining the entire length--of 100km."

Since data recovery at these speeds and distances is challenging, Bell Labs researchers used a combination of detection, modulation, transmission, and signal processing techniques with advanced error correcting coding.  

During the experiment, the vendor used 155 lasers, each of which operated a different frequency and carrying 200 Gbps over a 50 GHz frequency grid to enhance the performance of a traditional WDM system, which today carry speeds of up to 100G.

The technical feats achieved in Alcatel-Lucent's trial may not be commercially ready for a number of years, but they could come in handy for cable systems such as Seaborn Networks' Seabras-1, a new 10,500 km fiber optic cable that will provide a direct route between New York and Sao Paulo.

For more:
- see the release

Special report: Submarine cable operators hunt for new routes to counter congestion, political turmoil

Related articles:
Alcatel-Lucent Q1 rises to $4.2 billion on strong North America, VDSL2 sales
Alcatel-Lucent, Telekom Austria demonstrate 1 Gbps over copper in G.fast trial
Alcatel-Lucent, Huawei, Ciena drive sales of 100G ROADMs, says Infonetics

Suggested Articles

To better gauge which rural areas in the U.S. lack broadband services, FCC Chairman Ajit Pai is proposing a new mapping process.

VMware announced Thursday afternoon that it was buying application delivery controller startup Avi Networks, but it didn't disclose the financial terms.

Google continues to execute on its $13 billion U.S. investment plan by announcing on Thursday that it's expanding a data center in Oklahoma.