Interest in underwater optical communications has grown in recent years. A key aspect for the development of such systems is the modeling of light signal propagation in turbid water. In this paper, we present an experimental estimation of the light beam attenuation coefficient by varying the turbid water conditions with pollutants and also considering sea and lake water. The estimation of the beam attenuation coefficient c is based on laboratory measurements of the optical signal-to-noise ratio (SNR) for underwater transmissions and an analytical model of c as a function of SNR. To assess the reliability of the estimation procedure, c has been estimated in the case of clear water and the value obtained is very close to that reported in many studies. Next, c has been estimated for different water conditions. In particular, the results show that the value of c for polluted waters varies between 2.875 m−1 and 15.675 m−1. In addition, the values of c for lake and clear sea water are 0.6 m−1 and 0.9 m−1, respectively.
Lodovisi, C., Gerardi, F., Moriconi, C., Betti, S. (2024). Beam attenuation coefficient for different water turbidities. APPLIED OPTICS, 63(24), 6482-6494 [10.1364/AO.528477].
Beam attenuation coefficient for different water turbidities
Lodovisi, Chiara
Writing – Original Draft Preparation
;Gerardi, FabrizioData Curation
;Betti, SilvelloSupervision
2024-08-20
Abstract
Interest in underwater optical communications has grown in recent years. A key aspect for the development of such systems is the modeling of light signal propagation in turbid water. In this paper, we present an experimental estimation of the light beam attenuation coefficient by varying the turbid water conditions with pollutants and also considering sea and lake water. The estimation of the beam attenuation coefficient c is based on laboratory measurements of the optical signal-to-noise ratio (SNR) for underwater transmissions and an analytical model of c as a function of SNR. To assess the reliability of the estimation procedure, c has been estimated in the case of clear water and the value obtained is very close to that reported in many studies. Next, c has been estimated for different water conditions. In particular, the results show that the value of c for polluted waters varies between 2.875 m−1 and 15.675 m−1. In addition, the values of c for lake and clear sea water are 0.6 m−1 and 0.9 m−1, respectively.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
