公开(公告)号：JPH11191649A

公开(公告)日：1999-07-13

申请号：JP29666498

申请日：1998-10-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ADAMS LAURA ELLEN ,  BETHEA CLYDE GEORGE ,  FANG WEI-CHIAO ,  NYKOLAK GERALD ,  PEOPLE ROOSEVELT ,  SERGENT ARTHUR M ,  TANBUN-EK TAWEE ,  TSANG WON-TIEN

IPC: H01S3/10 ,  H01S5/0625 ,  H01S5/10

Abstract: PROBLEM TO BE SOLVED: To provide a broad band adjustable laser, which generates optical output signal corresponding such as to the wavelength of a wavelength division multiplexing (WDM) system, N-pieces of channels, with any one of the N-pieces of different axial modes. SOLUTION: An adjustable semiconductor laser has a gain region 12 having an MGW active region 12.1, grating DFB regions 12.2 of a uniform pitch and a first waveguide 12.3. A cavity resonance is formed of a composite reflecting region 14, which has a second MQW region 14.1 and a second waveguide 14.3, and the regions 12.2. Due to the voltage applied to this region 14, a quantum confining Stark effect is caused and as a result, the wavelength of the laser is changed.