Alcatel-Lucent's Bell Labs Shows 256 Gbps Line Rate
Alcatel-Lucent announced a number of innovations that make it possible to transmit data at significantly higher bit rates and over significantly longer distances by leveraging a number of innovations, including applying higher-order signal modulation to achieve greater spectral efficiencies; heightening the sensitivity of optical receivers to a point approaching their fundamental limit; exploiting new multimode transmission to increase the capacity of optical networks by orders of magnitude.
Highlights of the announcement:
Doubled spectral efficiencies — enabling a per line transmission rate of 256 Gbps over a distance of 400 kilometers by using 64-QAM modulation.
Record modulation/receiver sensitivity — reduces by half the number of photons needed to transmit information and achieves a record degree of sensitivity by applying an advanced 16-ary-pulse-position-modulation scheme.
New multimode fiberr — promising the potential to increase the capacity of a single fiber strand by an order of magnitude.
Fully-integrated optical Orthogonal Frequency Division Multiplexing (OFDM) generator — based on photonic integrated circuits using Indium Phosphide(InP). http://www.alcatel-lucent.com
Share this article
Help others discover this reporting.
Editorial responsibility
Staff
Editor & Publisher
Every article published by Converge Digest is researched, curated, fact-checked and editorially reviewed by Jim Carroll, Editor & Publisher. AI-assisted drafting may be used to accelerate production, but all content is reviewed, refined and approved prior to publication.
You just read about Alcatel-Lucent. One of the companies whose work it now carries:
Lucent Technologies built Telecom switching, optical transport, wireless and Bell Labs. What became of it?
Lucent Technologies brought Telecom switching, optical transport, wireless and Bell Labs to Telecom. That work was distinctive enough to lead to its merger with Alcatel-Lucent for US$13.4B. The standalone name now passes into the archive — but the team and technology continue inside Alcatel-Lucent today. One of 430 names here whose work outlived the company.
You just read about All. A technology from the archive that helped get us here:
Google/Alphabet Project Loon served 2011–2021. What ultimately replaced it?
Google/Alphabet Project Loon solar-powered balloons drifting in the stratosphere (~20 km), steering by rising and falling into different wind layers, relaying LTE from ground stations to phones far below. Its job passed to Unit economics — but the problem it solved, and the ideas it proved, live on in what replaced it. The standard rests here in the archive. One of 198 technologies here that opened a door and then held it for the next.
