| 摘要 |
PROBLEM TO BE SOLVED: To make it unnecessary to provide any extremely complicate setting/control or require an extremely expensive optical component (wavelength locker), and to easily and inexpensively execute the setting/control of light output wavelength and light output power. SOLUTION: At least one value for determining the dependency of the driving currents of light output wavelength in a light emitting element configuring a first means 1 which generates a light output on an element temperature, and at least one value for determining the dependency of the driving currents of a light output power on the element temperature, are stored in a fourth means 4. Driving currents or light output power (c) and an element temperature (d), for which both the light output wavelength and light output power of the light emitting element are separately set as a designated value (b), are determined from a relation of the driving currents, element temperature and light output wavelength of the light emitting element, and a relation of the driving currents, element temperature and light output power to be determined from at least one value by a fifth means 5. These are applied as target values in a second means 2 and a third means 3. COPYRIGHT: (C)2006,JPO&NCIPI
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