Performance evaluation of remote millimeter wave generation in a digital optical link incorporating a gain switched vertical cavity surface emitting laser

摘要

In this work, gain switched 1.55 mu m Vertical Cavity Surface Emitting Laser (VCSEL) is analyzed for simultaneous transmission of Gigabit digital data as well as for remote millimeter (mm) wave generation at harmonic frequencies in a Single Mode Fiber (SMF) link. Numerical simulation of gain switching on VCSEL under square pulse excitation is carried out. For Gigabit Ethernet link transmission, the maximum link lengths for both 1.25 and 2.5Gbps are found as 106 km and 96 km at BER <= 10(-10). For a link length of 10km, the generated RF power at 2.5GHz, 5GHz and 10GHz frequencies are -25.68 dBm,-28.49 dBm and -37.13 dBm respectively, under 2.5 Gbps transmission. Signal powers of -35.05 dBm,-36 dBm, -39.52dBm and -50.56dBm are observed for 1.25GHz, 2.5GHz, 5GHz and 10GHz respectively, under 1.25Gbps transmission.