Thorlabs offers a wide selection of fiber components for telecom and datacom applications, including fiber couplers / splitters, wavelength division multiplexers (WDMs), and fiber attenuators. We also offer a variety of products that are designed to manipulate the polarization state of light in a fiber. Also available is Thorlabs’ suite of Vytran® products, which are designed for high-quality fusion splicing, optical fiber processing, and end face geometry inspection.