To ensure proper and effective cleaning of optical fiber connectors and interfaces, use the following fiber optics specific cleaning materials: Optical fiber cleaning materials: Isopropyl alcohol, lint free soft tissues, connector reel cleaners, and a ferrule cleaner (courtesy of. To ensure proper and effective cleaning of optical fiber connectors and interfaces, use the following fiber optics specific cleaning materials: Optical fiber cleaning materials: Isopropyl alcohol, lint free soft tissues, connector reel cleaners, and a ferrule cleaner (courtesy of. Fibre optic cleaning is a critical process in ensuring high-performance network connectivity and minimising signal degradation. In fibre optic systems, even microscopic particles of dust, oil, or residue on connector end faces can cause insertion loss, return loss, and overall signal disruption. This document describes inspection and cleaning processes for fiber optic connections. FiberMall, a leading specialist provider of optical-communication products and solutions, offers a. Fiber optic networks are vital for fast, reliable communication, but even the smallest contaminants can disrupt performance.