The Fujikura FSM-90S+ is an advanced fiber fusion splicer designed for the fiber optic communication field, suitable for efficient splicing of single-mode, multimode, and specialty fibers. It features core alignment technology to ensure low-loss and high-quality connections, along with automated functions like discharge calibration, wind protection, and auto-focus, which enhance operational efficiency. Its built-in wind protection allows stable splicing even in windy environments, and its compact design makes it portable and ideal for fieldwork. The FSM-90S+ is widely used in the deployment and maintenance of high-speed networks such as 5G and data center interconnections.