The F-SV Single-Mode Fiber from is all-glass and supports single-mode light propagation for a 633 - 780 nm operating wavelength range. This low attenuation, step-index fiber has a uniform core refractive index and a matched-clad profile. In modern large-scale data centers, network components like servers and switches are often positioned at significant distances from one another. In fiber-optic communication, a single-mode optical fiber, also known as fundamental- or mono-mode, is an optical fiber designed to carry only a single mode of light - the transverse mode. Our R&D has enabled fibre optic technology to move forwards while opening the door to mass fibre production and its use in long haul. 📦 For purchasing, use the RP Photonics Buyer's Guide for single-mode fibers.