Patent ID: 6563846
Filing Date: 2003-05-13
Classification: H04B,H04J,H04Q

Abstract:
In a laser transmitter system for a DWDM network, said laser transmitter system having a semiconductor laser generating an output for said laser transmitter system and a control unit for controlling operations of said semiconductor laser, a method of operating said laser transmitter system comprisingstoring in said control unit a closed mathematical form relating variables of output power, wavelength, bias current and operating temperature of said semiconductor laser, said variables related to each other by empirically determined coefficients; storing in said control unit said empirically determined coefficients; and setting said temperature to achieve the desired output power and wavelength of said semiconductor laser according the said closed mathematical form and empirically determined coefficients; and setting said bias current based upon the temperature setting to achieve the desired wavelength of said semiconductor laser according the said closed mathematical form and empirically determined coefficients.