Optical semiconductor module having a capability of temperature regulation
AssigneeFujitsu Quantum Devices Limited
InventorsYasuyuki Yamauchi, Toyotoshi Machida, Nobuhiro Ninomiya
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Abstract
An optical semiconductor device includes a package body, a laser diode accommodated in the package body, a temperature regulation block connected thermally to the laser diode, an optical filter connected thermally to the temperature regulation block, a photodetector receiving the laser beam from the laser diode via the optical filter, a feeder feeding a driving power to the laser diode, and a thermal conducting body provided separately to the feeder, wherein the thermal conducting body transmits the temperature of the package body to the laser diode.
Claims16
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.
An optical semiconductor device, comprising:
- a laser diode;
- and
- a wavelength control part including a wavelength detection part and controlling an oscillation wavelength of said laser diode in response to an optical beam of said laser diode detected by said wavelength detection part,
- said wavelength control part including a beam splitter of an optical medium defined by a pair of non-parallel principal surfaces, said beam splitter being disposed between said laser diode and said wavelength detection part,
- said optical beam of said laser diode being incident to one of said principal surfaces and exit from one of said principal surfaces.
Dependencies are inferred from the claim text.