Despite the fact that there are already some operators that launched offers navigation to 1 Gb/s, the reality is that the global average is “only” 7 Mb/s, with South Korea to head: 28 Mb/s.
With the development of the internet, the demand for transmission and processing massive data is growing. Especially for the centers of large-scale data, it is important to build communication links with high capacity and low cost to share the processing capacity and storage capacity between the servers. The previous research in this field is focused mainly in the high-speed transmission and for this employing the VCSEL bandwidth of about 25 GHz. However, the VCSEL of this calibre carries a price extremely high, which goes against the original intent of the optical connections, low-cost data centers.
A VCSEL is an acronym for Laser Emission Surface of Cavity for Vertical, this is a special laser that promises to revolutionize fiber-optic communications by improving efficiency and increasing the speed of the data. Laser diodes, more ancient, called emitting diode, edge, emit coherent light or infrared energy (IR) parallel to the boundaries between the layers semiconductor. The VCSEL, on the other hand, does so perpendicular, thus the vertical.
Recently, a study, conducted by researchers from the University of Beijing, led by Chuanchuan Yang, has been shown experimentally that it is possible to achieve an optical link of 70 Gb/s, which allows transmission of high-speed data in data centers. All this at a reduced price and without modifying the bandwidth. To give an idea, 70 Gb/s is equivalent to over 8,700 Mb/s, at least 300 times faster than the current speed of navigation in South Korea. Logically this is for data centers, but a fraction interesting that speed can reach consumers.
“This research,” says Yang– has a great importance directive to limit bandwidth and cost-effective options that will be used in data centers for optical interconnections in high-speed between the servers in the future. According to our knowledge, the results reported the data transmission rate highest for a optical link-based VCSEL of 850 nm and 18 GHz of bandwidth”.
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