Patent ID: 6856633

Claim:
An optical module comprising: a light-emitting device configured to output a laser beam; a first temperature-sensing unit disposed adjacent to the light-emitting device so as to sense a temperature of said light-emitting device; an optical filter positioned to receive and filter at least a component of the laser beam; a wavelength monitor device configured to monitor a wavelength of the laser beam and output a signal associated with monitored light at the wavelength; a wavelength regulating unit configured to regulate the wavelength of the laser beam that is output from said light-emitting device based on said signal from the wavelength monitor device; wherein at least a portion of said wavelength monitor device being in contact with said wavelength regulating unit; and a second temperature-sensing unit disposed adjacent to said optical filter so as to sense a temperature of said optical filter, the signal of the temperature sensed by said second temperature-sensing unit being used to correct the signal outputted from said wavelength monitor device.