Reference: Juniper
Juniper Networks devices are equipped with laser transmitters, which are considered a Class 1 Laser Product by the U.S. Food and Drug Administration and are evaluated as a Class 1 Laser Product per IEC/EN 60825-1 requirements.
When working around ports that support optical transceivers, observe the following safety guidelines to prevent eye injury:
– Do not look into unterminated ports or at fibers that connect to unknown sources.
– Do not examine unterminated optical ports with optical instruments.
– Avoid direct exposure to the beam.
Laser Warning: Unterminated optical connectors can emit invisible laser radiation. The lens in the human eye focuses all the laser power on the retina, so focusing the eye directly on a laser source—even a low-power laser—could permanently damage the eye.
https://www.juniper.net/documentation/us/en/hardware/jrr200/topics/concept/laser-led-warnings.html
Laser Warning: Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to transceivers emit laser light that can damage your eyes.
https://www.juniper.net/documentation/us/en/hardware/nfx250/topics/topic-map/nfx250-maintaining-fiber-optic-cables.html
Reference Cisco:
Warning: Statement 1051—Laser Radiation
Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/hardware/install/b_c9400_hig/b_c9400_hig_chapter_01010.html
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