The Infini-LightÔ Stabilized Broadband Source is a wideband high power light source.  It provides a low degree of polarization, stable light source over a very wide wavelength range of more than 350nm at > -35dBm/nm.  It incorporates highly accurate control of luminescence diode sources to achieve superior stability. When all wavelength options installed, one light source unit can be used for all communication windows, including O, E, S, C, and L bands. External modulation allows the use of lock-in amplifiers for high sensitivity measurement. The low degree of polarization provides accurate and consistent measurement for high PDL or PDl components.