公开(公告)号：US20040085623A1

公开(公告)日：2004-05-06

申请号：US10671482

申请日：2003-09-29

Applicant: ALCATEL

Inventor： Lionel Provost ,  Christian Simonneau ,  Isabelle Bongrand ,  Philippe Bousselet ,  Christine Moreau ,  Dominique Bayart ,  Laurent Gasca

IPC: H01S003/00

CPC classification number: H01S3/06708 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/094007

Abstract: An optical fiber amplifier is considered comprising a mono-mode core, a first cladding around said core and at least a further cladding around said first cladding while said first cladding includes a ring shaped active region doped with rare earth material surrounding said mono-mode core. Advantageously, the first cladding is designed with a radial refractive index following an almost continuous decreasing function for increasing radius. The use of a continuously decreasing refractive index for the cladding at the outer border of the ring shaped active medium optimize the efficiency of the coupling between the core and the cladding.

Abstract translation: 认为光纤放大器包括单模芯，围绕所述芯的第一包层和围绕所述第一包层的至少另一包层，而所述第一包层包括掺杂有围绕所述单模芯的稀土材料的环形有源区 。 有利地，第一包层被设计成具有径向折射率，跟随用于增加半径的几乎连续的减小函数。 在环形有源介质的外边界处对包层的连续降低的折射率的使用优化了芯和包层之间的耦合的效率。