Li-fi is coming soon
LIFI (Light Fidelity), known as wireless visible light communication, also known as the optical fidelity technologies, is a technology for transmitting data using light bulb light. Li-Fi technology using LED lights everywhere, by a tiny chip implanted on the bulb formation is similar to AP (Wi-Fi hotspot) devices; terminals can access the network at any time. LIFI invention designed to challenge existing Wi-Fi technology, but given the limitations of this technique,
Recently, the school of information science and Engineering College of positive news, a visible light transmission network signal inside the international leading edge communications LIFI successfully achieved in the laboratory. Researchers network signal to a 1W LED lamp bead, light and 4 computers Internet, off-line speed up 3.25G, real-time system average Internet access rates of up to 150M, one of the world's fastest "light Internet". Next month, 10 prototypes will be unveiled in 2013, Shanghai industry fair.
Li-Fi, English "Light Fidelity" abbreviation, Chinese-called "wireless visible light communication", by Herald Haas and his team at the University of Edinburgh in 2011, a patented technology, this technique uses rapid pulses of radio transmission of information, and their use is currently (October 2013) is still in its initial stages.
Li-Fi lamp light to transmit data through a micro-chip to an ordinary LED retrofit bulbs, bulb flashes very fast, you can send data using light bulbs. Light bulbs blink rate millions of times per second. In this way, the LED bulb can quickly transfer a binary encoding. For open hole, however, such flashes are not visible, only the sensitive receiver can detect it. This is similar to the torch to send Morse code, but faster, and uses a computer understand the alphabet.
To use visible light for Li-Fi, to modulate their output so that it carries information as convenient as a Wi-Fi router. Using the standard LED lights, Haas and his colleagues created Gordon Bowei s team has reached two meters distance 130 gigabits per second transfer rate. 
Li-Fi with optical fiber has the same advantages of high bandwidth, high speed, unlike the Li-Fi in light propagation in the environment around us is that natural light can be reached anywhere, Li-Fi signals. With incandescent lamps, fluorescent lamps gradually disappeared from the market and replaced by LED, any place where there is light in the future can become potential sources of Li-Fi data transmission.
On the streets, with the lights you can download movies; in the House, turn on the lamp, you can download songs in the dining room, sitting where there is light, can send tweets; even under water, as long as there is a spotlight on access to the Internet.
Li-Fi in any radio-sensitive can use, such as airplanes, operating room.
Optical spectrum width reaches 10,000 times the radio frequency spectrum, which means...