The infrared light in fiber optic links is at a wavelength that cannot penetrate your eye easily because it's absorbed by the water in your eyeball. Light in the 1300-1550 nm range is unlikely to damage your retina, but might harm the cornea or lens. They have an image of a laser burning holes in metal or perhaps burning off warts. DON'T do it. Besides the usual safety issues for construction, generally covered under OSHA rules (OSHA 10 and 30), fiber optics adds concerns for eye safety, chemicals, sparks from fusion splicing, disposal of fiber shards and more. Let's start with the eye safety issue. If your that worries order a sc dust cap, but your wasting your time and money worrying about it No way to know if power is on it unless you have a light meter. While this may not sound like a lot of wattage, keep in mind this light can pump through a fiber that's only 9 millionths.
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