This tunable laser source features high-performance components imported from international suppliers, offering high output optical power (10mW) and a narrow linewidth (1MHz). It provides continuous laser output with up to 89 ITU-T standard wavelengths in the C-band (50GHz spacing) and 64 wavelengths in the L-band. It integrates laser and control elements within its circuitry, enabling wavelength tuning and adjustable power settings via the RS232 protocol interface. This laser source is ideal for use in 40G/100G long-distance high-speed optical fiber communication systems and for testing C-band DWDM passive optical components and photodetectors. It is also suitable for DWDM system R&D, fiber lasers, fiber links, and optical device testing.