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Japanese Researchers Transmit 3Gbps Using Terahertz Frequencies
MrSeb writes "Researchers at the Tokyo Institute of Technology have developed a new wireless transmission system that works above all currently regulated spectrum frequencies. The new system works at the range of 300GHz to 3THz (terahertz), which is the Far Infrared (FIR) frequencies of the infrared spectrum. That spectrum is currently totally unregulated by any country or standards organization in the world, making it ripe for development of new technologies. So far the Japanese researchers have transmitted data at 3Gbps, but in theory speeds of up to 100Gbps should be possible."
How soon will it be until Japan begins transmitting gamma rays?
Infrared? Not exactly wi-fi. You'd have to be in the same room as the router for this to work. I don't see many practical applications.
Free Martian Whores!
aargh - more high science bandwidth junk energy.. I am concerned for **living things** that may have sensitivities that we dont know about.. including our own cells and energy systems. Fine, use this, with shielding and confined transmission channels..
I swear, we are a Frankenstein of 4 year old -like tech makers plus market rush-to-implementation risk takers..
as the water molecules contained in the upper layers of your skin move in reaction to these waves!
I've heard before that the higher the range of frequency, the harder it is for signals to penetrate things like walls. If we keep advancing along these lines, could this potentially ease our troubles with wifi-over-saturation because we won't be picking up our neighbors' signals?
"I like to lick butts!" by MobileTatsu-NJG (#32700246) (Score:5, Informative)
How much is that in median tentacle pr0n movie units per second?
Tokyo Institute of Technology? hahaha, TIT.
Yes, you're right. After all, visible-light is pretty damn high-frequency and it sucks at penetrating walls.
Visible light: 400 to 700 nm
Far Infrared: 15,000 nm to 1,000,000 nm
Regular wifi: 125,000,000 nm
I have no idea at what wavelength drywall and other modern building materials start seriously attenuating a signal (as in "only good for line-of-sight" attenuating). Anyone?
With the first link, the chain is forged.
That doesn't really matter because you are stupid.
No you are... He/She is right. Turns out IR doesn't go through walls too well.
Works just fine if you up the transmitter power enough.
What are you, some sort of girly man?
Q: What do you call electromagnetic waves at Terahertz frequencies on the other side of a wall?
A: Utterly useless.
"Terahertz radiation is non-ionizing submillimeter microwave radiation and shares with microwaves the capability to penetrate a wide variety of non-conducting materials. Terahertz radiation can pass through clothing, paper, cardboard, wood, masonry, plastic and ceramics. It can also penetrate fog and clouds, but cannot penetrate metal or water."
http://en.wikipedia.org/wiki/Terahertz
With the first link, the chain is forged.
It requires line of sight and only has a range of 1-3 meters without significant power boosting. In other words.....you are better off just running wires
Media center interconnects. Large rooms, e.g. event centers.
*reconfigures pirate radio station to broadcast in FIR frequencies*
~theCzar
If terahertz wifi cards become generally available, how long before we see articles about people repurposing the hardware to do terahertz reflective imagery like the security guys already do for looking through walls to spot people in a room or look through cloths to see "weapons"?
http://www.dailymail.co.uk/sciencetech/article-2131932/The-REAL-X-Ray-spex--new-terahertz-scanner-lets-mobile-phones-walls.html
Concrete is dense by every definition.
Since transmission speed is a function of frequency, then I suspect that a much higher bandwith is possible.
The purpose of existence is to make money.
The real news here is that terahertz electronics is getting small, and potentially cheap. That has many uses. Most of them, though, do not involve data transmission. Terahertz radar will be useful for medical imaging, security, and driverless cars. There will probably be manufacturing applications, like quick 3D profiles of objects for inspection and measurement.
Point to point terahertz data transmission probably isn't that useful. Point to point laser links have never been very useful. At light and near-light frequencies, rain, snow, and fog will block the beam. If you want one, outdoor laser links are commercially available.
A mosquito fart would interfere with the signal.
and it is called "line of sight".
Ms Eve(sdropper) will point a powerful telescope at your window and get a sufficient signal.
Just short the switch protecting the 600W tube from being operated with the door open. Then point it out of the window towards your finance district. That will basically take out the next few square miles of Wifi.
Whats wrong with the editors, wouldnt this article have better interest if it had a better title? Researchers at the TIT (Tokyo Institute of Technology) have developed a new WiTS (wireless transmission system)
There go the rest of the bees!
They already use 100THz range frequencies for high-resolution seeker radar. I am not sure as to what the benefits are as compared to simply using an IR Laser, but it might have something to to with A) ability to modulate signal and perform ranging B) better penetration of clouds, fog and countermeasures.
http://www.slideshare.net/aticourses/tactical-missile-design
You might be able to cook a turkey at those frequencies.
So you can download the entire internet in a minute. Then what? And where are you going to put it?
Why does transmission have to happen in the "room", and not, say, "outside the room", to, say, a satellite 50,000 miles away?
And, why only 3 Gbps??? Check this one out: http://www.irconnect.com/noc/press/pages/news_releases.html?d=118076
Definitely infrared (THz for some definition of THz) carrier, with up to 40 Gbps datarate, able to go to and from a big router in space...
In the interest of full disclosure, I have been working on a small part related to that program in my past, so immediately reacted along the lines of "Wait a minute, what about Northrop LaserComm???"... ;-)
Paul B.
I am not sure as to what the benefits are as compared to simply using an IR Laser
Hopefully, electrical beam steering. IR lasers still have to be steered with moving mirrors. On the receive side, you need a big moving mirror, because you need big collecting optics to get any significant range. If phased array techniques can be made to work in that band, scanning devices won't need moving parts. 3D LIDAR scanners are still expensive, clunky devices.
"Researchers at the Tokyo Institute of Technology have developed a new wireless transmission system that works above all currently regulated spectrum frequencies. The new system works at the range of 300GHz to 3THz (terahertz), which is the Far Infrared (FIR) frequencies of the infrared spectrum"
Except such frequencies are prone to interference and don't travel far and don't work well when the transmitter and receiver are moving, which means you need lots of base stations.
"Terahertz wi-fi would probably only work within ranges of about 10m "
AccountKiller