BT Runs an 800Gbps Channel On Old Fiber
judgecorp writes "BT has demonstrated an 800Gbps 'superchannel' on a 410km fiber in its core network, which was not able to carry 10Gbps channels using older technology. The superchannel is an advanced dense wave division multiplexing (DWDM) technique, created by combining multiple coherent optical signals into one channel, which had previously been shown in laboratory tests. BT ran the test on a fiber with optical characteristics (high polarization mode dispersion) that made it unsuitable for 10GBps using current techniques. That's a good result for BT, because it means its existing core fiber network can be upgraded to handle more data. It's also a good customer story for Ciena, which makes the optical switches used in the test."
But when will they upgrade my 4Mbps down / 256Kbps up DSL connection that I pay through the nose per month for? Cuz really, I keep reading about those marvelous link speeds but in the past 10 years, I haven't seen much of that reach the average Joe Blow internet user like me...
"A door is what a dog is perpetually on the wrong side of" - Ogden Nash
Might want to change the title...
800 Gbps fiber to the home, here we come!
Just kidding. But still... These high bandwidth innovations are going to have a stunning impact on some companies deeply invested in expensive transnational data transport. It's time to put away the notion of precious gigabits forever.
Help stamp out iliturcy.
^^ BT exists in England
That's BT for you, instead of investing in the network, they flog the life out of the old crap they have to avoid investing in the network, and give more money to shareholders.
Take Nobody's Word For It.
They are the only ones that can lay fiber and invest into last mile, and they stubbornly refuse to do that.
I hate them so much for it. UK is falling further and further behind the rest of the world, it's just ridiculous.
--Coder
So BT create an elegant method to get better utilisation out of existing infrastructure and most of the posts here are a spat over who has the fastest internet access. I take my hat off to the engineers who have worked on this, nice job. It is good to see people working on practical solutions within tight constraints and getting results. A world away from the /. crowd moaning about the limitations of what they can passively consume.
No news here people. The fact that existing fiber optic cable can be reused with new terminating equipment to increase transmission speed is not anything new.
MCI was doing this throughout the 1990s.
The inherent properties of the fiber optic cable have always meant that their potential "max speed" was much higher than the current terminating equipment of the time.
This is as interesting as someone saying "Hey, I bought a new sports car and drove it faster on this old road today than I did on my motor scooter yesterday!"
I worked for these guys once. They bought my company and destroyed it. BT is one of the most incompetent companies I have ever seen. They hide behind regulation as an excuse for running aground at every turn, but the head of security argued that we had to use Telnet instead of SSH because Telnet was more secure. Compared to BT bureaucracy, the U.S. congress is a well oiled machine. It can take a over a month to get a port opened on a firewall ... If it's approved, which seldom happens on the first try. I could go on for day with funny stories of sheer stupidity taken to enormous excess.
To give me that kind of speed, I'd be happy. ;-)
Harrison's Postulate - "For every action there is an equal and opposite criticism"
I'm just mid way through upgrading 120 sites from ADSL 8mb to ADSL 24mb with BT.
Most will go up by about 0.5 or 1mb, a few lucky ones will go up by at least 6-10mb. The highest i think will be 22.5mb.
However most of the sites are capable of FTTC of 25-75mb so we're doing that instead!
Where I live, the local incumbent cable company took $60 million from the taxpayers on the promise of rolling out 24mbit cable to 100% of the residents of our city. Yet, they lied and did not put plant into any street or subdivision with underground utilities, yet still reported to the federal government that they had.
Criminals.
Am I the only slashdotter who sees "BT" and immediately thinks it's about bittorrent?
Download a copy of the Man of Steel screener in a single millisecond. Yay !!
Comment removed based on user account deletion
"Oh waaah I live up a country lane that's 10 miles away from the nearest house and I can't get fibre optic, woe is me" If you want good broadband move to a city. I live in Bristol and i'm pretty happy with my BT Infinity service, I get about 75 down/25 up unlimited for like £25 a month.
i'd like to know if these smart-lasers used on optimal fibre would go even faster then 800Gbps on "bad" fibre?