Microlens arrays are arrays of small lenses with diameters ranging from a few micrometers to several hundred micrometers. They are widely used in various optical systems due to their ability to improve light coupling efficiency and spatial resolution. In fiber coupling, microlens arrays have become. In this paper, VirtualLab Fusion software 2023. At this interface, multiple factors, such as mode size, numerical aperture (NA), and alignment accuracy are closely interconnected, and even slight. Collimation and coupling of fibers can be made simple with the use of a PowerPhotonic fiber microlens array. Laser-welded fibers ensure robust adhesion and 100% fused silica beam path, while automated alignment guarantees performance specifications regardless of fiber.