A new laser technology has been developed at the University of Illinois that transmits error-free data over fiber optic networks at an unimaginable speed of 40 gigabits per second- the fastest in the United States.
The high speed communication got a turbo boost again. Milton Feng, the Nick Holonyak Jr. Chair in Electrical and Computer Engineering, demonstrated the tiny, fast device along with post doctoral researcher Fei Tan, graduate students Mong-Kai Wu and Michael Liu, and Holonyak, who is emeritus professor. The team published its result in the journal IEEE Photonics Technology Letters.
Laser devices called oxide VCSELs are used to transmit data over fiber optic cables at high speed. They can carry data faster and in greater quantities than traditional electrical cables. "The oxide VCSEL is the standard right now for industry," Feng said. "Today, all the optic interconnects use this technology. The world is in a competition on how to make it fast and efficient, and that's what this technology is. At the U. of I., we were able to make this technology the fastest in the U.S."
At 40 gigabits per second, this technology is 400 times faster when compared to home-speed internet connections which reach about 100 megabits per second. Thanks new oxide VCSEL which also provide energy efficiency and error free data transmission. This can be a breakthrough which can be useful in cloud computing and other applications.
Feng believes that researchers could push oxide VCSELs to about 60 gigabits per second, but not far beyond that because of the inherent limitations in the materials.
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