The best splicers offer core alignment, fast splice times, durable designs, and smart features like cloud syncing and automated calibration. has been providing high-quality and highly reliable fusion splicer for over 40 years. Our machines are equipped with multiple features that ensure high-quality splicing and. Fusion splicers are essential for creating low-loss, high-performance fiber optic connections in telecom, FTTH, and data center applications. 2 An Introduction to GPX Glass Processors and LFS Large Fiber Splicers Thorlabs' Vytran® Filament Fusion Splicers for Standard, Large-Diameter, and Specialty Optical Fiber or Soft Glass Fiber combine filament fusion technology, a high degree of user process control, and simple operation.