Researchers Will Introduce 1.44-Petabit Fiber Optic Cable
The global flow of information is growing by 30–40% per year due to an increase in the number of Internet users and the emergence of data processing centers in many countries. The size of the World Wide Web in 2007 was estimated at 300 exabytes, but in 2013 it was extremely difficult to clarify these data.
Therefore, researchers and researchers are looking for ways to increase the number of wires in the cables in order to “raise” their throughput. Employees of the Japanese network operator NTT are preparing a demonstration of the system - a cable with 12 light guide channels capable of transmitting data at a speed of 1.44 petabs per second.
/ Flickr / johnathan nightingale / cc
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Engineer Taiji Sakamoto (Taiji Sakamoto) said that the creation of stranded optical fiber is associated with certain difficulties. One of the spatial limitations. Cables will be laid along standard channels, for example, underground, therefore maintaining the diameter is an important condition.
The team reduced the distance between the cores inside the cable to fit the standard cable format 125 microns. Moreover, optical communications usually involve the use of two light signals, that is, two states: on and off. For this project, NTT developed an alternative approach using polarization, increasing the number of states.
“We also had to create our own device for an effective transition from a 12-wire solution to single-mode cables,” said NTT representatives.
The technology allows you to transmit information at great speeds ( for example, 5 thousand two-hour HDTV-video per second) and opens up new opportunities for telecommunication companies. The realized range of communication today is 50 kilometers.
It is worth noting that NTT tested cables with 19 conductors ( presenting the development last year), located in the shape of a hexagon, and with 10 conductors arranged in a circle. And although the 19-wire implementation had a large bandwidth, it required 250 µm cables.
NTT will present its technology at the end of March in Los Angeles at the International Optical Community (OSA) conference. However, company representatives point out that the decision will be ready for commercial use no sooner than ten years from now.
But what else do we write in our blog:
Therefore, researchers and researchers are looking for ways to increase the number of wires in the cables in order to “raise” their throughput. Employees of the Japanese network operator NTT are preparing a demonstration of the system - a cable with 12 light guide channels capable of transmitting data at a speed of 1.44 petabs per second.
/ Flickr / johnathan nightingale / cc')
Engineer Taiji Sakamoto (Taiji Sakamoto) said that the creation of stranded optical fiber is associated with certain difficulties. One of the spatial limitations. Cables will be laid along standard channels, for example, underground, therefore maintaining the diameter is an important condition.
The team reduced the distance between the cores inside the cable to fit the standard cable format 125 microns. Moreover, optical communications usually involve the use of two light signals, that is, two states: on and off. For this project, NTT developed an alternative approach using polarization, increasing the number of states.
“We also had to create our own device for an effective transition from a 12-wire solution to single-mode cables,” said NTT representatives.
The technology allows you to transmit information at great speeds ( for example, 5 thousand two-hour HDTV-video per second) and opens up new opportunities for telecommunication companies. The realized range of communication today is 50 kilometers.
It is worth noting that NTT tested cables with 19 conductors ( presenting the development last year), located in the shape of a hexagon, and with 10 conductors arranged in a circle. And although the 19-wire implementation had a large bandwidth, it required 250 µm cables.
NTT will present its technology at the end of March in Los Angeles at the International Optical Community (OSA) conference. However, company representatives point out that the decision will be ready for commercial use no sooner than ten years from now.
But what else do we write in our blog:
- "Everywhere is online": the Internet on water, in the air and in space
- 4 ways to save bandwidth - we cache and compress traffic
- "Echo of past years": How to solve the issue of lack of IPv4 addresses
- DPI for satellite Internet assistance - experience on ANADYR.NET communication network
- Library of the administrator of systems for traffic analysis (DPI)
- Alerting the public in case of emergencies - a solution for telecom operators
- Introduction to DPI: Analytics, Market Situation and Trends
- Netflow - assemble and show
- DPI equipment
- A little about the history of CAPTCHA
Source: https://habr.com/ru/post/319626/
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