The ML1256 from Modulight, Inc. is a Distributed Feedback (DFB) Laser Diode that operates at a wavelength of 1490 nm. It delivers an optical output power of 10 mW and has a spectral width of 0.11 nm & 0.07 nm (at 70 deg). This laser diode has a maximum modulation bandwidth of 4 GHz (at 60 deg) & 6 GHz and slope efficiency of 0.26 W/A & 0.16 W/A. It has a beam divergence of 26 deg (parallel) and 45 deg (perpendicular). This laser diode has a focal length of 3.87 mm and fiber coupling efficiency of 35%.
The ML1256 has a built-in InGaAs monitor photodiode (PD) with a dark current of 0.1 μA and monitor current of 100 μA. It has a monitor capacitance of 5 pF and serial resistance of 6 Ohms. This laser diode requires a threshold current of 18 mA & 35 mA (at 70 deg), DC voltage of 1.2 V, and consumes 38 mA & 65 mA (at 70 deg) of current. It requires a DC supply voltage of 8.6 V and consumes 1.6 A of current. This laser diode is available with a flat lens in a TO-can package that measures 17.3 (L) mm x 5.6 (W) mm x 2 (H) mm and is ideal for digital optical communication network applications.
