Showing posts with label Petabit. Show all posts
Showing posts with label Petabit. Show all posts

Saturday, April 8, 2017

NTT Carriers One Petabit per Second over Single Fiber over 200 km

NTT has demonstrated a record inline optical amplified transmission of 1 petabit (1000 terabit) per second over a 205.6 km single strand of 32-core (light paths) optical fiber.

The experimental system used 32-core fiber with a new arrangement of cores to reduce inter-core light leakage, a fan-in/fan-out (FI/FO) device to couple light into the multi-core fiber, along with new digital coherent optical transmission technology. The result aws 31.3 Tbit/s capacity per core (680 Gbit/s per wavelength x 46 wavelength channels).  Multiplied by 32 cores, adn the total transmission capacity exceeded the petabit milestone.

The test was conducted in collaboration with the Technical University of Denmark, Fujikura Ltd., Hokkaido University, the University of Southampton and Coriant.

The transmission occurred within a single optical amplifier bandwidth (C-band), which is half the bandwidth used in a previous experiment the used C-band + L-band. NTT said its research indicates that it is potentially possible to carry 1 petabit per second over 1000 km, which is approximately the distance between major cities both in Japan and in Europe.

Thursday, November 19, 2015

Bell Labs' MIMO-SDM Sets Path to Petabit/Sec Optical Transmission

Bell Labs, the research arm of Alcatel-Lucent, announced a space-division multiplexed optical multiple-input-multiple-output (MIMO-SDM) system with the potential to increase current 10 to 20 Terabit-per-second fiber capacities to Petabit-per-second capacity - the equivalent of 1,000 Terabits/s.

Bell Labs said it has demonstrated real-time 6x6 MIMO-SDM using six transmitters and six receivers in combination with real- time digital signal processing to remove cross-talk.  The experiment was conducted over a 60-km-long coupled-mode fiber in Bell Labs’ headquarters in New Jersey.

The researchers claim this MIMO-SDM technique could overcome the capacity limitations imposed by the non-linear ‘Shannon limit’ on current optical fiber.

“This experiment represents a major breakthrough in the development of future optical transport. We are at the crossroads of a huge change in communications networks, with the advent of 5G Wireless and cloud networking underway. Operators and enterprises alike will see their networks challenged by massive increases in traffic. At Bell Labs we are continuously innovating to shape the future of communications networks to meet those demands,” said Marcus Weldon, CTO of Alcatel-Lucent and President of Bell Labs.

Alcatel-Lucent announced the first commercially available single-carrier 100G technology in June 2010 and the first commercially available 100G/200G single-carrier line card in 2014, that can deliver up to 24 Tbps capacity.

In 2013, Alcatel-Lucent announced the first deployment of a 400G superchannel optical link with FT Orange with a capacity of 17.6 terabits-per-second, based on the 400G Photonic Service Engine (PSE), co-developed by Bell Labs.