SDM OVER HYBRID FSO LINK UNDER DIFFERENT WEATHER CONDITIONS AND FTTH BASED ON ELECTRICAL EQUALIZATION

The wireless telecommunication system of hybrid free-space optics (FSO) utilizes a transmission medium of free space to transmit data at high bit rates. However, it is exposed to various effects of noise in different weather conditions. This paper studies compensation for atmospheric turbulence and modal dispersion in optical communication systems. An investigation is carried out of 12-channel Spatial Division Multiplexing (SDM) over FSO link under different weather conditions and few-mode fiber (FMF) based on linear Bessel filter. The experiments show that the system capacity increases effectively by using SDM over hybrid FSO- fiber to the home (FTTH) that operate at 1550 nm wavelength. A series of simulation experiments are conducted to evaluate the performance of a 12-channel transceiver system in an SDM-FSO link (based on electrical equalization at the receiver for FTTH) under different weather conditions. Transmissions of 120 Gbit/s are performed over a number of distances such as to 8500 m, 3900 m and 1400 m of hybrid FSO. This work is validated by measuring eye diagrams, Q-Factor and Bit Error Rates. The simulations showed that the values of the eye diagram, BER, and Q-Factor revealed significant results for the improvement of the bandwidth in the hybrid FSO-FTTH system