公开(公告)号：JPH06164032A

公开(公告)日：1994-06-10

申请号：JP3584992

申请日：1992-01-28

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： KARURO DE BERUNARUDEI ,  SARUBATOORE MORASUKA

IPC: G02B6/122 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/08 ,  H01S3/094 ,  G02B6/12

Abstract: PURPOSE: To provide a pumping system for injecting a pumping power as high as possible into a monomode waveguide while overcoming restraints imposed according to the radiation flux preservation rule. CONSTITUTION: Pumping light 15 injected from a plurality of pumping radiation sources 5a, 5b,..., 5m and 5n having wavelength λ2 into a monomode active region 11 surrounded by claddings 12, 13 through a dichroic component (half mirror) 6. A signal light of wavelength λ1 from a signal source 4 entering into the monomode active region 11 through the half mirror 6 is amplified effectively by intensive pumping lights from a conventional light source 5 and the plurality of pumping radiation sources 5a, 5b,..., 5m and 5n entering into the active region 11.