Researchers at University College London claim they’ve obtained a new top internet speed of 178Tbps – a fifth quicker than the prior record and fast enough to download the entire Netflix catalog in under a second, they say.
To achieve that, the researchers used different bandwidth ranges than are typically used in commercial optical systems. Traditional fiber infrastructure uses bandwidth of 4.5THz with 9THz becoming more available commercially. In UCL experiments, the scientists used 16.8THz.
To do this the researchers used a variety of amplifier technologies, customizing which ones they used for each wavelength to optimize its performance as measured by phase, brightness and polarization, according to a press statement put out by UCL. These customization packages are known as geometric signal constellations.
The amplifiers that they’ve been working with are called hybrid discrete Raman & rare-earth doped fiber amplifiers, and they used the S-, C—and L-bands simultaneously, according to