Thursday, November 27, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Twitter Tracks Apps Installed On Your Device, Introduces Offers
Ubisoft Apologizes For Assassin's Creed Unity Issues, Offers Free Game
Europe Wants Right-to-be Forgotten to Go Globally
Far Cry 4 Game Available For Free With Purchase of 840 EVO SSD
UK Music Industry Seeks For New Tax on CD Copying
Samsung's DeepSort Sorting Engine Prevails In Benchmarks
Sony Plans E-Paper Watch: report
HP Reports Fiscal 2014 Full-Year and Fourth Quarter Results
Active Discussions
Hi All!
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
Copied dvd's say blank in computer only
Made video, won't play back easily
New Features In Firefox 33
updated tests for dvd and cd burners
 Home > News > General Computing > New Opt...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, March 14, 2013
New Optical Transmission Technology Achieves 100 Gbps Using 10 Gbps Transmission Components


Fujitsu has developed the first optical-transmission technology that can achieve 100 Gbps transmission speeds using conventional components intended for 10 Gbps networking.

Increasing data-transfer rates has typically required new components designed for those higher speeds, for which existing components have not been compatible. Moreover, there is a limit to the speed improvements that can be achieved with transmission methods using the simple modulation and demodulation formats that have been used to date. Fujitsu Laboratories and Fujitsu R&D Center have applied a Discrete Multi-Tone (DMT) modulation/demodulation format using digital signal processing (DSP) to transmit at 100 Gbps per channel using conventional components intended for transmission speeds of 10 Gbps per channel.

Applying this technology to an optical transceiver with four channels would result in a 400 Gbps Ethernet transceiver, which are needed in the next generation of datacenters in order to increase their data transmission speeds and processing capacity to better support cloud services.

While the DMT modulation/demodulation format is used in xDSL, this is the first time it has been used for optical transmissions at 100 Gbps. DMT divides the data into multiple subcarriers (carrier waves), and multi-level modulation is used for each subcarrier to achieve high transmission speeds. To optimize each subcarrier's power and number of multiple values, an algorithm was developed that checks receiving conditions between optical transceivers at the time the system is started up and optimizes power and the number of multiple values to suit the transceivers and line conditions.

Fujitsu Laboratories and Fujitsu R&D Center have developed a technology that uses existing commodity parts to achieve DMT modulation/demodulation. For example, some components have the characteristic of not being able to maintain sufficient linearity. These components can be profiled in advance and compensated for, enabling them to be used in the same way as parts that do maintain linearity.

Applying this technology to an optical transceiver with four channels would result in 400 Gbps Ethernet transceivers, which are needed in the next generation of datacenters.

With an eye toward practical use of this technology, Fujitsu considers developing an integrated DMT modem, and additional improvements for using existing technologies.

Details of this technology will be presented at the Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2013), beginning March 17 in Anaheim, California.



Previous
Next
LG, Samsung Battle On Times Square Billboards        All News        Google To Shut Down Reader Feed App
Intel Leads Decline in Semiconductor Market Inventory in Q4     General Computing News      Google To Shut Down Reader Feed App

Get RSS feed Easy Print E-Mail this Message

Related News
Fujitsu Develops LED Lighting Technology that "Shines" Data on Objects
Fujitsu Develops Design Technology for Allocating LTE-Advanced Base Stations
Fujitsu Launches Petabyte-scale New Hyper-scale Storage ETERNUS CD10000
Fujitsu Boosts Lineup of Smartphones and Tablets for the Enterprise
Fujitsu Develops Fast Recovery Process for Multiple Disk Failures
Fujitsu Relases New Extreme Series SSDs
Fujitsu, NTT, and NEC To Commercialize 400Gbps-class Optical Transmission Technology
Fujitsu, Panasonic Announce New Direction for Their Semiconductor Businesses
Fujitsu To Phase Out Chip Production
Fujitsu Technology Reduces Network Switches in Cluster Supercomputers
New Fujitsu ARROWS Tab Q335/K Tablet Coming In October
Fujitsu Buys Shares of Panasonic Information Technology Solutions

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .