Abstract
FSO (Free Space Optic) is a form of optical technology communication by transmitting light to media free space. In the FSO system, the data transmission can be larger, namely 1-100 Gbps, and this is due to the large bandwidth width. FSO runs at a wavelength of 850 nm and 1550 nm. FSO is usually with a maximum distance of 2-4 km. This paper simulates the FSO optical transmission system using NRZ and RZ line coding in bright and rainy weather conditions. The parameters analyzed are Eye diagram, Optical Spec-trum, photocurrent, and received signal power. In the FSO line coding system, NRZ has an eye height value, received signal power and received photocurrent is greater than the RZ line coding at a distance of 1 km and 5 km in bright and rainy conditions. In the trial of this FSO communication system, it is better to use it at a distance of 1 km, because the received signal power is above 20 dBm and received photocurrent is still above 800 mA for NRZ and RZ line coding. This is due to the attenuation value of sunny weather conditions that are smaller between 0.2-3 dB/km, while in rain conditions between 4-17 dB/km.
Highlights
FSO (Free Space Optics) is an optical communication technology in which data is transmitted by light propagation in empty space that allows optical connectivity
The following is a comparison of the simulation results from eye diagrams with attenuation of 0.7 dB/km as well as bright weather conditions within 1 km using nonre-turn to zero (NRZ) and return to zero (RZ) coding line, below this: (b) Figure 5. (a) Graph of the Optical Spectrum Analyzer between wavelengths with power uses NRZ line coding in bright and rainy conditions at attenuation 0.7 and 5 dB/km, (b) Graph of the Optical Spectrum Analyzer between wave-length with power uses RZ line coding in bright and rainy conditions at attenuation 0.7 and 5 dB/km
The eye diagram of the NRZ line coding is more perfect than the eye diagram of the RZ
Summary
FSO (Free Space Optics) is an optical communication technology in which data is transmitted by light propagation in empty space that allows optical connectivity. FSO communication offers a wide bandwidth potential that can provide high data rates [17]. Making this type of communication system is very interesting in meeting the consumers’ large demand supported by high internet. The FSO communication system (Free Space Optics) or often referred to as optical wireless, is an optical communication system that uses the atmosphere as its propagation media. The FSO uses light beams to send full-duplex Gigabit Ethernet data, voice and video communication throughput through air intermediaries.
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