Fiber Optics & Lasers: Light Usage

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Fiber optic cables can transmit both lasers and regular light, depending on their design and intended application. In telecommunications, lasers are typically preferred due to their high power, precise wavelength control, and quick switching capabilities. Regular visible light can also be transmitted through fiber optics, as demonstrated by specific products available on the market. The choice between lasers and regular light ultimately depends on the requirements of the specific use case. Understanding these distinctions is crucial for optimizing fiber optic applications.
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Do fiberoptic cables use lasers, or regular light? (or can they use either depending on the situation)
 
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Fibre optics will carry any light depending on the wavelength they are designed for.
Telecoms applications generally use lasers, they are high power, have a well controlled wavelength and you can switch them quickly.
 
Thank you.

I thought they used lasers, but couldn't find a source for that.
 
They can use either, as mgb_phys said.

Here is an example where regular visible light is transmitted by fibers:
http://www.edmundoptics.com/onlinecatalog/DisplayProduct.cfm?productid=1355
 
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