公开(公告)号：JP2000216463A

公开(公告)日：2000-08-04

申请号：JP2000009589

申请日：2000-01-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： COLLINGS BRANDON CHRISTOPHER ,  EGGLETON BENJAMIN JOHN ,  GREENBERG KOSONSKI SANDRA ,  LENZ GADI ,  SPALTER STEFAN HEINZ

IPC: H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/098 ,  H01S3/108

Abstract: PROBLEM TO BE SOLVED: To provide a laser incorporating a tunable diffraction grating for group speed dispersion compensation. SOLUTION: A laser contains a diffraction grating 11 which is incorporated in a cavity and can be tuned. The diffraction grating 11 generates GVD(group velocity dispersion) with a wavelength detached from an optical forbidden band and GVD compensation and control of dispersion in the hollow are executed. The diffraction grating 11 operates at a transmission mode and reflection in the optical forbidden band is constituted so that it does not affect a laser condition. The diffraction grating 11 can be synchronized and GVD in the hollow can be adjusted. The diffraction grating 11 is an apodized fiber Bragg diffraction grating in the hollow of a mode lock fiber laser in a preferable example. GVD of the fiber diffraction grating can be tuned with a distortion in an axial direction.