The hottest laser Li from Edinburgh University

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University of Edinburgh laser Li


are you still annoyed by the uneven distribution of Wi Fi signal areas and the weak signal? Li fi may be the answer. This technology uses LED based indoor lighting rather than radio wave data transmission. However, the main supporters of Li fi have their eyes beyond led. Using laser illumination to realize Li fi, the data transmission rate may be increased by 10 times. Harald Haas, a member of chair mobile communication at the University of Edinburgh and the ultra parallel visible light communication project, said:

and instigated the current experimental state of all channels. The problem is led lamps. Although their energy efficiency is higher than incandescent lamps, they can still improve their light output efficiency, Harald Haas of the University of Edinburgh said. We believe that the next wave of energy-efficient lighting will be based on laser diodes

li fi encodes by adjusting the data output by LED light. Human eyes cannot detect the fast flicker, but the receiver or mobile device on the desktop computer can read the signal, and even return the signal to the signal transceiver on the ceiling of the room to provide two-way communication. However, many light-emitting diodes use phosphor coating to convert blue light into white light, which also limits the rate of data transmission

this study was published in Optics Express. Haas and his team have shown that replacing existing LED lamps with laser diodes can greatly improve the current situation. With the high energy and optical efficiency of the laser, the data transmission rate can be 10 times faster than that of the LED. Without using phosphor, laser illumination can mix different wavelengths of light to produce white light. This means that the light of each wavelength can be used as a separate data channel, and the same light wave can be transmitted in both directions, which can greatly improve the speed of optical data transmission. The experiment of the University of Edinburgh team used hrd9 laser diodes

although LED based Li FI can achieve a data transmission rate of 10 GB/s, it can improve the upper limit of wi-fi7 GB/s data transmission rate. The rate of laser data transmission can easily exceed 100 GB/s

at present, this kind of equipment is still very expensive. The University of Edinburgh is looking for large-scale zarut banner to reach a resonance with Zhejiang Liancheng Electronic Technology Co., Ltd. on the aluminum deep processing project, and successfully sign a contract for mold production to reduce its cost, and it can be applied to the lighting market. The headlights of BMW I8 are based on this laser light

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