Networks
20-Gigabit Wireless Data Achieved By Crossing Laser Beams
Posted by Wilson Rothman at 12:45 PM on October 7, 2008
How do you make a wireless transmission that is as fast or even faster than most fiber-optic data passages? With laser beams of course! According to a Technology Review piece, super smart people at Battelle research in Columbus, OH figured out a way, using millimeter wave technology, to send data at speeds up to 20 gigabits per second. They even field tested 10 Gbps at up to 800 meters. Even accounting for Ohio's unnervingly flat terrain, this is several hundred times farther than a wireless transmission of that bandwidth had ever reached before.
Rather than dick around in the 10-gigahertz frequency space—higher than most of today's phones and wireless data products, but still in the realm of conventional radio—the Battelle team figured out how to create a 100GHz frequency by "modulat[ing] data on two low-frequency laser beams, then combin[ing] the two." I knew crossing the streams of a proton gun could be bad; I did not know crossing laser beams modulated with data signal could be this good. I suppose the breakthrough does bode well for wireless devices, but I can't imagine how any of this could run off of a lithium-ion battery. And, hey, wouldn't laser phones make us all go blind? OK, smart people, please start talking, cuz I'm definitely over my head on this one. [MIT Tech Review via KurzweilAI.Net]

Comments (AU Comments · US Comments)
There are currently no AU comments for this post.
Alex7575
Posted 2:22 PM 7/10/08
@ryanchild292: The singular of fungi is fungus. Muhahaha
Alex7575
RayCeeYa
Posted 2:20 PM 7/10/08
And, hey, wouldn't laser phones make us all go blind?
Not really because "millimeter range" in in the far infrared portion of the spectrum and thus pretty much harmless to us.
The downside is that lasers are unidirectional as opposed to omnidirectional which is what most portable wireless devices need.
RayCeeYa
HotFootMcCook
Posted 2:19 PM 7/10/08
The most epic-ist of pictures to define it, Wilson.
And quite interesting indeed.
HotFootMcCook
ryanchild292
Posted 2:19 PM 7/10/08
The plural of fugus is fungi.
ryanchild292
JuiceDaddy
Posted 2:18 PM 7/10/08
@ciscokidinsf:
You beat me too it :(
JuiceDaddy
Suttin
Posted 2:13 PM 7/10/08
@Alex7575:
How the heck is that possible? Doesn't the server have to get the request before it can even send anything?
Suttin
ciscokidinsf
Posted 2:11 PM 7/10/08
Just remember, don't cross the streams!
ciscokidinsf
Alex7575
Posted 2:09 PM 7/10/08
At 20Gbps an average webpage is rendered on the browser before the request even hits the server.
Alex7575
D.E.P.C.
Posted 2:06 PM 7/10/08
@shockwaver: Fight! Fight! Fight! Fight! This is gonna get ghetto real quick. Hold on while I get some popcorn and dots.
D.E.P.C.
shockwaver
Posted 2:03 PM 7/10/08
@WiglyWorm: Ohio has nothing on the prairie region of Manitoba (IE, Winnipeg). Being the lake bed of a prehistoric lake tends to make it flat. In fact, I believe it is considered the flatest place on earth.
shockwaver
Thanassi44
Posted 1:59 PM 7/10/08
Excellent Egon caption!
Thanassi44
ViperBorg
Posted 1:58 PM 7/10/08
Yes, but what is the latency? Can we adapt it for Satellite communications? Will it blend?
ViperBorg
WiglyWorm
Posted 1:57 PM 7/10/08
Um... what is so "unnerving" about the flatness of my states terrain?
My friend if you're looking for a fight... on the internets...
WiglyWorm
purple-pillows
Posted 1:54 PM 7/10/08
im no doctor but that is some fast wireless... but i was always under the impression its bad to cross streams... especially in when playing airplane...
purple-pillows
laxman15
Posted 1:53 PM 7/10/08
does it make unlimited energy?
laxman15
icelight
Posted 2:51 PM 7/10/08
@RayCeeYa: Actually, they aren't. Lasers are only coherent, which among other things gives them a very low dispersion. It's the lenses that make the lasers we think of unidirectional, but there's nothing to stop someone from placing a lens in front of a beam and spreading it all over the countryside. Of course, you're signal strength tends to fall off pretty rapidly doing that, but that's just the cost of doing business.
icelight
whoneversleeps
Posted 2:46 PM 7/10/08
A lot of more isolated communities are connected to the telco network by microwave link, which can create a bandwidth bottleneck. Seems to me that this would be a technology better geared toward replacing those links in places where laying fiber is impractical... not so much to make your iphones shoot internet lasers. Shame.
whoneversleeps
NoelZavala
Posted 2:40 PM 7/10/08
I'm staying at a Holiday Inn Express tonite. Feel free to ask me any questions about the inner workings of this new technology.
NoelZavala
hiimcliff
Posted 3:02 PM 7/10/08
@Suttin: Jesus, it was a joke.
hiimcliff
subsider34
Posted 3:30 PM 7/10/08
Hey, anyone remember that thing called infrared data transfer? This would make an excellent replacement. Also, the applications for making secret DarkNet networks is endless.
DarkNet definitions can be found at:
[www.darknet.com]
[www.wordspy.com]
subsider34
Overheal
Posted 3:54 PM 7/10/08
@whoneversleeps: Good point made about microwave I think. could see it replaced in a few years.
Overheal
justhesh
Posted 3:52 PM 7/10/08
"super smart people at Battelle research in Columbus, OH"
Thank Christ we get a decent representation for once that doesn't involve a national college championship. Well, there's this and hopefully our MLS team.
If all goes as planned, we'll be a blue state by Christmas.
justhesh
Stacky Botrus
Posted 9:58 PM 7/10/08
I would rather have a twinkie 20 feet long weighing 600 pounds.
Stacky Botrus
phresh125
Posted 12:13 AM 8/10/08
@ryanchild292: everyone knows Egon was such a fun gi.
Thank you, thank you. I'll be here all week...
phresh125
TerryinSt.Paul
Posted 12:42 AM 8/10/08
@ryanchild292:How do you know he wanted to collect more than one?
TerryinSt.Paul
araddatz
Posted 12:56 AM 8/10/08
@hiimcliff: should be a FF addon.
araddatz
pitpawten
Posted 12:56 AM 8/10/08
@ciscokidinsf:
Peter: Why, what would happen if you crossed the streams?
Egon: It would be bad.
Peter: I'm fuzzy on the whole good/bad thing.
Egon: Imagine all life as you know stopping instantaneously, and every molecule in your body exploding at the speed of light.
Ray: Total protonic reversal.
Peter: Alright that would be bad.
pitpawten
Tweak
Posted 1:07 AM 8/10/08
lol, i just watched that movie yesterday
Tweak
EricAlder
Posted 1:04 AM 8/10/08
Everything in modulation.
EricAlder
strider_mt2k
Posted 1:03 AM 8/10/08
That's a big Twinkie.
strider_mt2k
blackmage439
Posted 1:37 AM 8/10/08
I see this as a revolutionary way to bring broadband across the US, rather than a mobile device carrier. Think about how many hundreds of thousands, if not millions, of dollars it costs to lay 800 meters of fiber optic cable, capable of achieving 20Gbps, underground. Factor in obstructions the likes of urban sprawls, digging through granite, and other fun delays. Now, consider how expensive it is to mount two towers across that distance, bypassing all of those problems.
blackmage439
Kayonesoft
Posted 2:40 AM 8/10/08
Next thing you know, they'll invent dogs and cats living together.
Kayonesoft
Segment7.1
Posted 3:54 AM 8/10/08
AOptix Technologies has a commercialized product that does 40 Gbps over 150 km:
[www.aoptix.com]
...It's based on the same adaptive optics technology Gizmodo previously posted on with regard to astronomy:
[gizmodo.com]
Segment7.1
Segment7.1
Posted 3:52 AM 8/10/08
AOptix Technologies has a commercialized product that can do 40 Gbps over 150km:
[www.aoptix.com]
...It uses the same adaptive optics technology you guys have previously posted on with regard to astronomy:
[gizmodo.com]
Segment7.1
Margatron
Posted 4:58 AM 8/10/08
@shockwaver: OOooh! Canada-US flatness throwdown!
Margatron
jaiku
Posted 5:03 AM 8/10/08
This technology may someday be used for long-distance voice-and-data backhaul (think WiMax on photon-steroids) replacing now-antiquated microwave backhaul and in the nearer term to provide extreme bandwidth to businesses in high density areas (shorter distances, between big office buildings- check out TeraBeam), but I think it is unlikely to ever provide "last mile" connectivity to homes or individual users due to the directionality of focused "frickin' laser beams". Lasers are, however, extremely susceptible to atmospheric interference- i.e. rain, snow and fog. So, who knows. Maybe this is just a nifty piece of lab work that will never hit the streets...
jaiku
jlawson
Posted 6:56 AM 8/10/08
@WiglyWorm: Southwestern OH (Cinci area) is hilly as anywhere else, but move north on 75 towards Toledo (or even 71 towards Colombus) and it's definitely flat.
jlawson
ripfire
Posted 10:36 AM 8/10/08
@tsunamisurf: " I do not see why they would combine 2 of the same signal, it would just increase the amplitude and not the frequency (constructive interference). "
Only if they're on the same phase.
ripfire
tsunamisurf
Posted 10:34 AM 8/10/08
if they are combining 2 lasers, then one should be modulating the other. I do not see why they would combine 2 of the same signal, it would just increase the amplitude and not the frequency (constructive interference). but the future rests with optical wireless networking guys. get wit it
tsunamisurf
shockwaver
Posted 11:10 PM 8/10/08
@D.E.P.C.: MAN! Your state is so hilly, that when the dog runs away, you can only see it run for TWO DAYS!
shockwaver