Shijia Photons’the MFD-FA fiber array adopts a specific fiber processing process to connect small mode spot large NA fibers with conventional single mode fibers, thereby achieving the conversion of fiber numerical aperture and the adaptation of MFD. Paired with the unique production control capabilities of Shijia Photons, the product has the characteristics of low insertion loss, high fiber core accuracy, and excellent optical coupling performance. It can be well applied to the coupling of high-speed silicon optical modules or thin film lithium niobate modules.