The Agilent-Hp 8166xA Distributed Feedback Laser Sources are part of the Agilent Lightwave Solution Platform, and best suited for amplifier test and DWDM system test applications. Agilent covers the C- and L-Band with its family of Distributed Feedback (DFB) laser source modules 81662A (10dBm) and 81663A (13dBm).