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Definition of "Photonic Network" |
An optical photonic network is a communications network in which information is transmitted as optical or infrared radiation transmission (IR) signals. In a true photonic network, every switch and every repeater works with IR or visible-light energy and conversion to and from electrical impulses is only done at the source and destination (origin and end point). Electric current propagates at about 10 percent of the speed of light (18,000 to 19,000 miles or 30,000 kilometers per second), while the energy in fiber optic systems travels at the speed of light. This results in shorter data-transmission delay times between the end points of a network. The top speed for data running over a single optical channel is about 10 Gbps but greater speeds can be obtained by dividing up a single optical cable into a number of channels. |
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