This chapter outlined the design considerations for a fiber optic link, explained the performance advantages that optical fiber has over copper cable, and explained in detail how to analyze the performance of a fiber optic link. Optical fiber is the highest performance transmission medium available today. Optical fiber boasts incredible bandwidth with very little attenuation over great distances. Fiber optic cables the size of a garden hose can hold hundreds of optical fibers each capable of carrying billions of bits of data per second. Fiber optic systems are emerging everywhere, and in the very near future fiber to your home will be a reality.