Fiber-optic Communications

Essay specific features

 

Issue:

Science

 

Written by:

Carla A

 

Date added:

March 7, 2013

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 425

 

Was viewed:

9095 times

 

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Essay content:

Microchips are made of semiconductors and a semiconductor is a band gap. A band gap makes is possible to control the flow of electricity in a chip. In order to make light chips, you need the photonic equivalent of silicon: a material that can trap light. "You need a way of trapping the light so there are no escape channels," says John...
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Diederik Wiersma and his colleagues used a powder of gallium arsenide. The laser could not penetrate a layer of powder even when the layer was less than a hundredth of an inch thick. It was indeed the very first time that anyone had trapped light, but as they knew, microchips cannot be made out of powder...
displayed 300 characters

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