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Light source for optical wireless communication device

Answer

Light source Use Wavelength
Light emitting diode
(LED)
Indoor equipment for a relatively short distance (up to about 200 m)
Indoor equipment
820nm~
880nm
Semiconductor laser diode
(LD)
Relatively long distance (200m or more)
Outdoor equipment
780nm~
830nm
Surface emitting diode
(VCSEL)
Outdoor equipment for a relatively long distance (200 m or more)
Indoor equipment
850nm

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