公开(公告)号：JP2000022245A

公开(公告)日：2000-01-21

申请号：JP10155099

申请日：1999-04-08

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： MELIGA MARINA ,  PAOLETTI ROBERTO ,  SCOFET MARCO ,  TALLONE LUIGI

IPC: G02B6/42 ,  H01S3/08 ,  H01S5/026 ,  H01S5/12 ,  H01S5/14

Abstract: PROBLEM TO BE SOLVED: To provide a laser module which can shorten a full length of a cavity. SOLUTION: A laser module 1 includes a Fabry-Pero cavity active element 2 having a facet 3 for carrying an anti-reflection film thereon, and an external cavity defined by an optical fiber Bragg grating having a low reflection factor. The grating 5 exhibits a modulation profile having a reflection factor asymmetrical and non-uniform in a length direction of the grating. Thereby a position on an equivalent mirror surface is offset toward an end of the grating 5 closer to the active element 2.

公开(公告)号：CA2268428A1

公开(公告)日：1999-10-10

申请号：CA2268428

申请日：1999-04-09

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： SCOFET MARCO ,  TALLONE LUIGI ,  MELIGA MARINA ,  PAOLETTI ROBERTO

IPC: G02B6/42 ,  H01S3/08 ,  H01S5/026 ,  H01S5/12 ,  H01S5/14 ,  H01S3/1055

Abstract: A laser module comprises a Fabry-Perot cavity active element with a facet bearing an anti-reflection coating and an external cavity made by an optical fibre Bragg grating with low reflectivity. This grating presents a non-uniform profile of modulation of the refractive index, asymmetrical in the direction of the grating length, such as to give rise to a position of the equivalent mirror plane that is offset towards the end of the grating that is closer to the active element.

公开(公告)号：CA2268428C

公开(公告)日：2001-12-04

申请号：CA2268428

申请日：1999-04-09

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： MELIGA MARINA ,  PAOLETTI ROBERTO ,  SCOFET MARCO ,  TALLONE LUIGI

IPC: G02B6/42 ,  H01S3/08 ,  H01S5/026 ,  H01S5/12 ,  H01S5/14 ,  H01S3/1055

Abstract: A laser module comprises a Fabry-Perot cavity active element with a facet bearing an anti-reflection coating and an external cavity made by an optical fibre Bragg grating with low reflectivity. This grating presents a non-uniform profile of modulation of the refractive index, asymmetrical in the direction of the grating length, such as to give rise to a position of the equivalent mirror plane that is offset towards the end of the grating that is closer to the active element.