Patent ID: 6487027
Filing Date: 2002-11-26
Classification: H01L,H01S

Abstract:
An optical semiconductor device, comprising:a package body; a laser diode accommodated in said package body, said laser diode producing an optical beam; a temperature regulation part connected thermally to said laser diode, said temperature regulation part having a temperature regulation element and controlling a temperature of said laser diode; an optical filter connected thermally to said temperature regulation part, said optical filter having a transmittance curve sloped with respect to a wavelength, said transmittance curve representing a relationship between a transmittance of said optical filter and a wavelength of an optical radiation incident thereto; a photodetection part receiving said optical beam from said laser diode via said optical filter, said photodetection part detecting an intensity of said optical beam passed through said optical filter; a feeder feeding a driving power to said laser diode; and a thermal conducting body provided separately to said feeder, said thermal conducting body transmitting a temperature of said package body to said laser diode.