The Agilent 8165xA Fabry-Perot laser sources are single- or dual-wavelength modules to be used in conjunction with optical power meter modules for insertion loss, optical return loss and PDL measurement of broadband components and fiber. The 8165xA Fabry-Perot lasers are insensitive to back reflections and are stabilized for short and long-term applications. For convenience the output power of the sources can be attenuated for applications where lower power is wavelength: 1550nm1mW output powerCW power stability: ± (24h)Internal digital modulationOutput attenuation