modulator
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This electro-optical modulator is smaller than a lightwave
As data travels around the internet, it's routinely switched from electrical signals to light in order to travel through the network's fiber optic backbone. To do this, the signal travels through devices called electro-optic modulators. However, these devices are really bulky (usually several centimeters across) and require an inordinate amount of power to operate. However, a team from ETH Zurich recently published research in the journal Nature Photonics that outlines how they built a modulator one hundred times smaller and less power hungry than conventional models.
Graphene-powered web could download 3-D movies in seconds, give MPAA nightmares
Graphene, is there anything it can't do? Researchers are already trying to put it in processors, fuel cells, and batteries -- now your internet connection might get ten-times faster thanks to the silicon successor. Researchers at UC Berkeley have created tiny, one-atom-thick modulators that could switch the data-carrying light on and off in a fiber-optic connection much faster than current technology. In addition to running at a higher frequency (the team believes it will scale up to 500GHz -- modern modulators run at about 1GHz) the smaller, 25-micron size means thinner cables could be used, reducing capacitance and further boosting speeds. Labs have already crossed the 100 terabit threshold and graphene could push that even higher, yet we're still stuck staring at a buffering screen every time we try to Netflix Degrassi.
DIY Robot Voice Modulator makes it that much easier for you to cover Styx
Yes, you could just run out and buy a vocoder, but they're kinda pricey and this way is so much more fun! Using an IKEA clock, a fluorescent desk lamp, an HT8950 voice modulator, a condenser microphone and some miscellaneous stuff you're crafty self is bound to have just laying around, you can make one of your own! Doesn't look terribly complicated to us, but then, we love things that are terribly complicated. Get to it, sirs -- hit the read link for full instructions. Dōmo arigatō.[Via Make]
HD 101: What is ATSC, PSIP, QAM, and 8-VSB?
Once you buy an HDTV it doesn't take long before you get confused by all the acronyms. We love us some HD, but the days of simply bringing a new set home and plugging into a coax cable are long over -- at least for most. It is pretty obvious by the latest surveys that most people don't understand exactly what it takes to enjoy HD on their HDTV, but even if you do, you may not understand what most of it means. Now while this isn't the typical make sure you have your HDTV configured to watch HD post, it will help you understand the different ways HD is delivered.
