Engineering & Technology Magazine, 8 November 2008

Can visible-light communications help expand wireless technology beyond the limitations of the radio-frequency spectrum?

You’ve probably heard that the days of incandescent and fluorescent light bulbs are numbered. What you probably haven’t heard is that the light-emitting diodes (LEDs) that will soon replace them will not only be helping light your way; they will also be broadcasting digital information to help your gadgets communicate with each other and the Internet.

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