The simplest method: join two pre-terminated cables via a coupler (also called an adapter). The coupler aligns the two connector ferrules using a zirconia sleeve. In this guide, we'll walk you through exactly how to splice fiber without a fusion splicer, covering the tools you need, the step-by-step process, performance specs, and common mistakes to avoid. From FTTH (Fiber to the Home) deployments and enterprise backbone upgrades to field repairs and. There are three main methods, each with its own advantages and limitations. This temporary fix will get your network back up and running, giving you time to source new fiber cable.