The 1MW-16MW 1550nm DFB butterfly laser diode is encapsulated in a 14-pin butterfly package.The equipment consists of a built-in thermoelectric cooler, thermistor,and monitoring photoelectric diode.It produces a low threshold current, high output power,and small temperature coefficient of the wavelength.According to the customers requirements,the module can be supplied with a built-in or external isolator and internal or external modem.