Circuit Skills: Fiber Optics

http://blog.makezine.com/archive/2011/07/circuit-skills-fiber-optics-sponsored-by-jameco-electronics.html

Not all digital signals are connected by means of electrical power. By transferring info in the type of light, we can prevent lots of restrictions intrinsic to conventional circuitry. And also in addition to all that – optical fiber are simply straight-up great!