ound can be translated into digital signals that are coded into light. On the communications superhighway, pulsing light generated by lasers carries messages on strands of glass called optical fiber. In this Brainspin lesson, you will learn why optical fiber is superior for transmission, how it works, and where it is used.

hink you have what it takes to captain the USS Brainspin? Match wits with a cable-biting shark in our interactive game: "Adventures of the Cable Patrol"