Open AccessCalculations of Signal to Noise Ratio (SNR) for Free Space Optical Communication Systems
Author(s) -
Baghdad Science Journal
Publication year - 2008
Publication title -
mağallaẗ baġdād li-l-ʿulūm
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.167
H-Index - 6
eISSN - 2411-7986
pISSN - 2078-8665
DOI - 10.21123/bsj.5.1.95-100
Subject(s) - optics , free space , wavelength , transmitter , free space optical communication , physics , detector , optical communication , signal (programming language) , signal to noise ratio (imaging) , duplex (building) , electronic engineering , computer science , telecommunications , engineering , chemistry , channel (broadcasting) , programming language , dna , biochemistry
In this paper, we calculate and measure the SNR theoretically and experimental for digital full duplex optical communication systems for different ranges in free space, the system consists of transmitter and receiver in each side. The semiconductor laser (pointer) was used as a carrier wave in free space with the specification is 5mW power and 650nm wavelength. The type of optical detector was used a PIN with area 1mm2 and responsively 0.4A/W for this wavelength. The results show a high quality optical communication system for different range from (300-1300)m with different bit rat (60-140)kbit/sec is achieved with best values of the signal to noise ratio (SNR).