Patent ID: 7869717
Filing Date: 2011-01-11
Classification: H01S

Abstract:
1. An optical communication light source unit including: eleventh means which comprises a light emitting device and emits light; twelfth means for automatically controlling drive current of the light emitting device to maintain the drive current at a given target value; thirteenth means for automatically controlling device temperature of the light emitting device to maintain the device temperature at a given target value; fourteenth means for storing a first data and a second data, wherein fifteenth means for specifying optical output wavelength characteristics of the light emitting device from the first data, the specified optical output wavelength characteristics being expressed as a function relating the optical output wavelength to the drive current and the device temperature in a three-dimensional space having coordinate axes of the drive current, device temperature and optical output wavelength, wherein the fifteenth means is adapted to give the value of the drive current and the value of the device temperature of the light emitting device determined by the fifteenth means as the given target values in the twelfth means and the thirteenth means, respectively.