公开(公告)号：CA2143944A1

公开(公告)日：1994-03-17

申请号：CA2143944

申请日：1993-09-09

Applicant: BELL COMMUNICATIONS RES

Inventor： POGUNTKE KAI RALPH ,  SOOLE JULIAN BERNARD DONALD

IPC: H01S3/10 ,  G01J3/20 ,  G02B6/12 ,  H01S3/08 ,  H01S3/101 ,  H01S5/00 ,  H01S5/026 ,  H01S5/14 ,  H01S5/40

Abstract: An integrated, multi-wavelength laser having formed on a substrate (12) a plurality of active, individually selectable waveguides (14), a passive output waveguide (16), and a diffraction grating (18) formed in a Rowland-circle spectrometer geometry. The frequency of the lasing light is determined by-the geometrical relationship of the selected active waveguide, the diffraction grating, and the output waveguide. The active waveguides are positioned such that lasing light cannot diffract between two active waveguides. Little crosstalk occurs because no carrier depletion occurs in the output waveguide.

公开(公告)号：EP0663109A4

公开(公告)日：1997-12-03

申请号：EP93921420

申请日：1993-09-09

Applicant: BELL COMMUNICATIONS RES

Inventor： POGUNTKE KAI RALPH ,  SOOLE JULIAN BERNARD DONALD

IPC: H01S3/10 ,  G01J3/20 ,  G02B6/12 ,  H01S3/08 ,  H01S3/101 ,  H01S5/00 ,  H01S5/026 ,  H01S5/14 ,  H01S5/40

CPC classification number: G02B6/12007 ,  G01J3/20 ,  H01S3/08086 ,  H01S5/026 ,  H01S5/141 ,  H01S5/4062 ,  H01S5/4087

Abstract: An integrated, multi-wavelength laser having formed on a substrate (12) a plurality of active, individually selectable waveguides (14), a passive output waveguide (16), and a diffraction grating (18) formed in a Rowland-circle spectrometer geometry. The frequency of the lasing light is determined by the geometrical relationship of the selected active waveguide, the diffraction grating, and the output waveguide. The active waveguides are positioned such that lasing light cannot diffract between two active waveguides. Little crosstalk occurs because no carrier depletion occurs in the output waveguide.