The Fiber Optic Tester In Your Pocket?

Fiber optic networks and testers generally use infrared light in the 850-1600 nm range, invisible to the human eye. But high power in fiber optic systems can be harmful to your eyes, so it's important to know if power is present in a fiber. A fiber optic power meter can be used, but you may not always have one on hand. The camera in your cell phone is sensitive to infrared light - lots more than your eye - and can detect light in an optical fiber or from a transmitter. Here's how to do it.

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