Explanation:

The Radio Frequency (RF) communication suffers from interference and high latency issues.
Along with this, RF communication requires a separate setup for transmission and reception of RF waves.

Overcoming the above limitations, Visible Light Communication (VLC) is a preferred communication technique because of its high bandwidth and immunity to interference from electromagnetic sources.
The revolution in the field of solid state lighting leads to the replacement of florescent lamps by Light Emitting Diodes (LEDs) which further motivates the usage of VLC.
Justification: VLC is a data communications variant which uses visible light between 400 and 800 THz (780–375 nm). VLC is a subset of optical wireless communications technologies.

The technology uses fluorescent lamps (ordinary lamps, not special communications devices) to transmit signals at 10 kbit/s, or LEDs for up to 500 Mbit/s.
Specially designed electronic devices generally containing a photodiode receive signals from light sources. Recently Organic LEDs (OLED) have been used as optical transceivers to build up VLC communication links up to 10 Mbit/s
Free space optical (FSO) communication is similar to VLC but is not constrained to visible light, so ultraviolet (UV) and infrared (IR) also fall into the FSO category.
Additionally, there is no illumination requirement for FSO and so this tends to be used in narrow beams of focussed light for applications such as communication links between buildings. FSO often uses laser diodes rather than LEDs for the transmission