Connet SLM Diode Laser Source is based on single longitudinal mode semiconductor fiber lasers, such as DFB, DBR or DM type semiconductor lasers. The output spectrum of these lasers is pure and the linewidth is in the order of MHz. The output fiber is generally a polarization-maintaining fiber. Non-PM fiber can be for selection. Connet uses high-precision current control circuits and temperature control circuits to ensure these light sources have a high degree of output power stability and wavelength stability.