Iridian is a leading global supplier of custom optical filters for telecommunications, offering high-performance, cost-effective solutions from prototype through high-volume production. With more than 25 years of expertise in optical design and manufacturing, Iridian provides a comprehensive portfolio of telecom filters, including CWDM, DWDM, multi-band WDM, gain flattening filters (GFFs), etalons, and wavelength-locking solutions that support advanced fiber optic, 5G/LTE, cable, submarine, and optical networking applications.