WAVELENGTH-VARIABLE LASER LIGHT SOURCE

Title:

WAVELENGTH-VARIABLE LASER LIGHT SOURCE

Document Type and Number:

Japanese Patent JP3197869

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a wavelength-variable laser light source, capable of continuously sweeping the oscillation wavelength near the desired wavelength over all the possible oscillation ranges with optical amplifier elements by suppressing mode hopping.
SOLUTION: An external resonance type laser is constituted of a diffracting means 2 including a diffraction grating 21 and a first reflector 22, optical amplifier 1 and first reflector 3. An angle detecting means 4 detects the angle of the optical axis of a light which points to the diffracting means 2 from a semiconductor laser LD11, making with the optical axis of a light pointing the LD11 from the diffracting means 2 via a controller 5 controls the resonator length, using the detected angle as an error signal.

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Inventors:

Masanori Machidori
Shigeru Kinugawa
Takanori Saito

Application Number:

JP10558998A

Publication Date:

August 13, 2001

Filing Date:

March 31, 1998

Export Citation:

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Assignee:

Anritsu Corporation

International Classes:

H04B10/516; H01S5/00; H01S5/042; H01S5/065; H01S5/14; H04B10/07; H04B10/564; H04B10/572; H04B10/61; (IPC1-7): H01S5/14; H01S5/065; H04B10/04; H04B10/06; H04B10/142; H04B10/152

Domestic Patent References:

JP9102645A
JP5206579A
JP7240558A
JP9129982A
JP1168248A
JP10335740A

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