公开(公告)号：CA2335166C

公开(公告)日：2005-01-11

申请号：CA2335166

申请日：2001-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ACKERMAN DAVID ALAN ,  ROTTWITT KARSTEN ,  STENTZ ANDREW JOHN ,  STRASSER THOMAS ANDREW ,  ZHANG LIMING ,  DU MEI ,  BACHER KENNETH L ,  DAUTREMONT-SMITH WILLIAM CROSS

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/30 ,  H04B10/00 ,  H04B10/17 ,  G02F1/39

Abstract: A fiber Raman amplifier is configured to use a co-propagating Raman pum p source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump sour ce characteristics, sufficient optical gain can be achieved in the co-propagati ng arrangement, the characteristics including: (1) using an optical pump power of at least 50mW, (2) having a relatively large spectral bandwidth within the pump (to suppress SBS); and (3) a frequency difference between all longitudinal pump modes of each pump laser being separated by at least the walk-off frequency between the pu mp laser frequency and the signal frequency, and all intense longitudinal modes betwe en different pump lasers being separated by at least the electrical bandwidth o f the communication system.

公开(公告)号：CA2335166A1

公开(公告)日：2001-09-03

申请号：CA2335166

申请日：2001-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ZHANG LIMING ,  STRASSER THOMAS ANDREW ,  DU MEI ,  ACKERMAN DAVID ALAN ,  STENTZ ANDREW JOHN ,  ROTTWITT KARSTEN ,  BACHER KENNETH L ,  DAUTREMONT-SMITH WILLIAM CROSS

IPC: G02F1/35 ,  H01S3/06 ,  H01S3/30 ,  H04B10/00 ,  H04B10/17 ,  G02F1/39

Abstract: A fiber Raman amplifier is configured to use a co-propagating Raman pum p source, which may be beneficial in a variety of system configurations (for example, in bidirectional communication systems). By carefully configuring the pump sour ce characteristics, sufficient optical gain can be achieved in the co-propagati ng arrangement, the characteristics including: (1) using an optical pump power of at least 50mW, (2) having a relatively large spectral bandwidth within the pump (to suppress SBS); and (3) a frequency difference between all longitudinal pump modes of each pump laser being separated by at least the walk-off frequency between the pu mp laser frequency and the signal frequency, and all intense longitudinal modes betwe en different pump lasers being separated by at least the electrical bandwidth o f the communication system.