Feasa manufactures a wide range of Wavelength Division Multiplexers (WDMs) at it's manufacturing facility in Limerick. Standard types include 1475/1550nm and 1480/1550nm pump WDMs and 1310/1550nm telecommunication WDMs. Custom wavelengths are also available and can be manufactured from either 80um or 125um fiber. Feasa's WDM features excellent reliability and thermal stability. Feasa's worldwide reputation is based on rapid delivery of the highest quality components to telecommunications, aerospace and fibre sensor industries.