Enhanced Performance of 32 GHz up to 200 km Vertical Cavity Surface Emitting Laser (VCSEL) for FrontHaul Radio Over Fiber System

Improved passive optical network RoF system based vertical cavity-surface emitting laser (VCSEL) optical source external modulation

“…This optical source has numerous advantages compared to edge-emitting lasers such as spectral efficiency, high directionality beam, and cost-effectiveness. Furthermore, because of the ease of fiber coupling, packaging, and the ability to be fabricated in arrays, VCSELs can be served effectively for passive optical network (PON) applications [1, 2] and essentially, a latest research shows its facility to be employed for a single user up to a distance of 200 km with no real degradation in the measured signal quality [3]. For short-reach data communication, continuous wave (CW) lasers which have been frequently used in most optical communication systems are now being replaced with VCSELs [4,5].Increasing the capacity of internet access, mobile Front-haul networks, and multimedia services have attracted research interest in the (PON) system [6,7].…”