This article will guide you through the process of cleaning optical components. Follow these steps to maintain clarity, accuracy and functionality. Dust particles, oil residue, and fingerprint traces on the optical interface of an SFP transceiver can increase insertion loss, raise the bit error rate (BER), and ultimately lead to unstable links or unexpected network downtime. Dirt, smudges, and other particulates can degrade light transmission or reflection. Are you ready? Did you bring your. Knowing how to clean SFP modules, performing routine SFP maintenance, and maintaining your optical module will avoid downtime and prolong the usable life of your equipment. You must pay close attention to these delicate surfaces, whether you're working with lenses, mirrors, prisms or fibre optics.