Design of WDM Fiber-FSO System Using EDFA and FBG for An Interbuilding Communication Link

The demand for a better and more capable telecommunication system continues to increase as other technologies advance. Telecommunication systems are facing a major problem in order to achieve higher capacity. To address this problem, a more capable system with higher capacity, yet reliable is required. This research offers a solution to this problem by improving the Fiber-FSO system using WDM technology. The key is to achieve larger capacities using multiple canals in the WDM method. This research proposes the usage of the 4 canal WDM component (193.1–193.4 THz) for the Fiber-FSO system. The design of the WDM Fiber-FSO system using EDFA and FBG proposed in this research reaches up to 80 Gb/s of data rate. This result is significantly higher when compared to other regular Fiber-FSO systems. One of many implementations of this system is the interbuilding communication system. For this implementation, a long-range system is necessary. This research provides an interbuilding communication system with fiber optic range extending up to 10 km per side and FSO media range reaching up to 10 km. The performance of the system will be measured mainly using the Q factor and minimum BER. At normal attenuation of 1 dB/km, the proposed design system reaches the best result averagely when given 10 dBm of power input. The average performance result in this scenario reaches Q Factor 6.78 on average. This performance result is in accordance with the standard given for the proposed design with the Q factor that requires the value of 6. The proposed design will be tested in several weather conditions in metropolitan cities, with attenuation in the FSO media reaching 20 dB/km for the worst conditions. The result of the design test under several conditions shows that the system will need to sacrifice the FSO media range as conditions worsen to achieve acceptable results.