公开(公告)号：AU2002257046A1

公开(公告)日：2002-10-03

申请号：AU2002257046

申请日：2002-03-15

Applicant: CORNING INC

Inventor： JEPSEN KIM ,  VASILYEV MICHAEL ,  GRAY STUART

IPC: H01S3/30 ,  H04B10/17 ,  G01B9/02 ,  G02B6/36

Abstract: In a distributed Raman amplification system, the pump laser and the fiber are chosen so as to have characteristics which result in broadening of the DRBS. For example, with a transmission fiber through which signal light of a wavelength lambds propagates, and having zero dispersion at a wavelength lambdo; a pump laser producing counterpropagating pump light at a wavelength lambdp; where lambdp and lambds are on opposite sides of the zero dispersion wavelength is used. The transmission fiber may be large effective area fiber. In a Raman amplification system suitable for use in a WDM optical fiber communication system, pump lasers having mode spacing which is less than the optical bandwidth of the signal channel have been found to be advantageous.