A fusion splicer is a device used to join two optical fibers together by melting their ends. This process creates a strong and low-loss connection, which is essential for efficient data transmission in telecommunications. Fusion splicing is commonly used in the installation and maintenance of fiber optic networks. The splicing process involves aligning the fibers precisely and using an electric arc to heat and fuse them. This technology is crucial for ensuring high-quality connections in various applications, including internet, television, and telephone services. Properly spliced fibers can significantly enhance the performance of fiber optic systems.