Title:
METHOD AND DEVICE FOR ADJUSTING CONTINUOUS SYNCHRONIZABLE LIGHT SOURCE
Document Type and Number:
Japanese Patent JP3481646
Kind Code:
B2
Abstract:
PURPOSE: To provide an easy adjusting method for a synchronizable light source by performing rotation of slide surface and translational positioning for rough adjustment, and performing fine adjustment according to the radiation output of a light source or the measurement result of a current.
CONSTITUTION: A diffraction lattice 7 is positioned on an optical axis on the side of first surface 4 of a laser. The lattice 7 is allowed to rotate freely about an axis 8, crossing an axis 3 of the laser at an angle of 90°. The lattice 7 rotates, in response, as a function of the frequency, the wavelength of light for rough adjustment. For fine adjustment of a light source, a separator 31 samples the light flux irradiated from the light source, and at a processing unit 33, a power source 2 is controlled so that the intensity of the light flux from the light source is constant, independent of the position of lattice 7, thus deciding a current which flows through the laser. Thereby, an easy adjustment method for a synchronizable light source is obtained.
Inventors:
Francois fabourg
Danil Le Guen
Danil Le Guen
Application Number:
JP8445393A
Publication Date:
December 22, 2003
Filing Date:
April 12, 1993
Export Citation:
Assignee:
France Telecom
International Classes:
H01S3/1055; H01S5/14; H01S5/0687; (IPC1-7): H01S3/1055
Domestic Patent References:
| JP5206580A | ||||
| JP2119197A |
Other References:
【文献】仏国特許出願公開2595013(FR,A1)
Attorney, Agent or Firm:
Shoichi Ui (4 others)
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