Fusion splicing is the process of fusing or welding two fibers together usually by an electric arc. Static electricity is an enemy of fiber optics and splicer electronics, especially in dry environments and/or air conditioning. 📦 For purchasing, use the RP Photonics Buyer's Guide for fusion splicers. Let's explore the fundamentals of mechanical and fusion splicing, their comparative benefits, and the detailed process involved. This virtual hands-on page will take you through the steps involved in the process. Look at the slide graphics and then read the notes below. If you have your own equipment, do the recommended exercises. Fiber optic strands are ultra-lightweight and about as thin as human hair, and yet, they have more than eight times the pulling tension of a copper wire.