The air bubbles effect for underwater optical wireless communication using 650 nm wavelength

الملخص EN

In this research, texts were sent by pulse width modulation (PWM) in the channel of clean water using Arduino hardware and software for an underwater wireless optical communication system (UWOC).

The air bubbles device utilized the disturbance at different distances from the transmitter source within the channel of clean water.

The total length of the channel is (1) m.

In this study, the source of transmitter wavelengths 650 nm was used with the power of 80mw.

The results showed that the received power was 32 mW in the clean water, while when air bubbles pump within the channel of clean water at 0.2m, 0.5m and 0.8m away from the transmitter source, the received power was 28 mW, 27.5 mW, and 27 mW respectively.

This paper shows that max.

Signal to Noise Ratio (S/N) and min.

attenuation (α) in the clean water were (24.637dB) and (3.979dB/m) respectively.

The practical results showed that the Symbol Error Rate (SER) in the case of the air bubbles pump was maximum (0.03) when the value of (S/N) was minimum (23.899).