Optical Fiber Communications and DWDM
Fiber optics technology is among fastest - growing communications technologies in the world. It is increasingly being used for communications signaling, and electrical control instead of older -technology hardwired system.
Fiber optic cable uses light to transmit signals. The core of Fiber optic cable is composed of one or more thin strands of either very pure glass or plastic, millions of which can be bundled together in a sheathing.
In 1860, Alexander Graham Bell demonstrated that light reflected off of mirrors was modulated by waves of sound. …
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