WAVELENGTH CONTROL DEVICE FOR WAVELENGTH VARIABLE SEMICONDUCTOR LASER, WAVELENGTH CONTROL METHOD AND WAVELENGTH VARIABLE SEMICONDUCTOR LASER DEVICE

摘要

PROBLEM TO BE SOLVED: To realize highly accurate and stabilized wavelength control by employing a simplified data base decreased in memory data, in a semiconductor laser, readily generating multi-mode oscillations and provided with a DBR structure.;SOLUTION: The wavelength variable semiconductor laser device is provided with the database 25 and a power supply controller 26. The database 25 stores a function or an information for specifying the function passing through a stably oscillating region from the relation between a pouring current If into a front SSG DBR region 31 as well as the pouring current Ir into a rear SSG DBR region 34 and an oscillation wavelength. The power supply controller 26 controls the pouring current If into the front SSG DBR region 31 and the pouring current Ir into the rear SSG DBR region 34 based on the stored data of the database 25.;COPYRIGHT: (C)2004,JPO