Performance Improvement of the Vertical Cavity Surface Emitting Laser Based on Active Hybrid Design and MIMO Configuration

Abstract

|The performance of the Vertical Cavity Surface Emitting Laser (VCSEL) for hybrid optical links SMF/FSO based on different data rates and MIMO con(cid:12)guration techniques was obtained using OptiSystem TM which is close to the results of the experimental system. The developed system was tested with various transmission distances: 20, 30, 40, and 50 km, and in the existence of many con(cid:12)guration kinds and modulations. In addition to that, the hybrid system was estimated with different weather cases: clear, rain, and snow. The results state that the performance of the OOK-NRZ system is better than OOK-RZ system under the same conditions. Also, the performance of the free space link is better than the (cid:12)ber link for most of the considered link ranges and con(cid:12)gurations. For OOKNRZ of the (cid:12)ber link, it was found that the MIMO 8 (cid:2) 8 technique has better system performance than other con(cid:12)gurations, and the Q-factor = 11 : 39 and BER = 5 : 4 (cid:2) 10 (cid:0) 30 for a length of 50 km while for the FSO link, it was found that MIMO 8 (cid:2) 8 indicates a high performance for Q-factor = 12 : 7 and BER = 1 : 8 (cid:2) 10 (cid:0) 37 . The maximum FSO link distances under different weather conditions and coupling ratios were found. For BER (cid:20) 10 (cid:0) 9 , in NRZ format for SMF 50 km utilizing MISO 8 (cid:2) 1 technology in clear weather for 10 Gbps, 15 Gbps, and 20 Gbps for FSO links, the maximum accessible lengths are 0.6 km, 0.51 km, and 0.43 km, respectively. The process is expanded to include snow conditions for data rates of 10 Gbps, 15 Gbps, and 20 Gbps for FSO links with lengths of 0.4 km, 0.3 km, and 0.26 km, respectively.