公开(公告)号：EP0803139A1

公开(公告)日：1997-10-29

申请号：EP95933280.0

申请日：1995-10-11

申请人： NORTHERN TELECOM LIMITED

发明人： LI, Guo, Ping ,  MAKINO, Toshi ,  HUI, Rongqing

IPC分类号： H01S3 ,  H01S5 ,  H04B10

CPC分类号： H01S5/0608 ,  H01S5/0615 ,  H01S5/06258 ,  H01S5/5063

摘要： A system for generating an ultra short optical pulse by pumping a semiconductor signal laser with an optical pulse from a semiconductor probe laser. The signal laser has dual segments each operated under different d.c. injection current levels. The probe laser is modulated with a pulsed input and the optical output thereof is coupled via optical means to the signal laser so as to Q-switch the latter. Optical pulses in the 65 ps range result.

公开(公告)号：EP0901617A1

公开(公告)日：1999-03-17

申请号：EP96941544.0

申请日：1996-12-18

申请人： NORTHERN TELECOM LIMITED

发明人： O'SULLIVAN, Maurice, Stephen ,  HUI, Rongqing ,  ZHOU, Jingyu

IPC分类号： G01M11 ,  H04B10 ,  H04L25

CPC分类号： G01M11/33

摘要： A performance evaluation analysis for optical transmission systems is disclosed. A reference eye mask is defined for a transmitter and for a reference optical transmission link. The quality of the transmission for a live path is determined by applying the reference eye mask on the eye diagram of the electrical signal recovered at a point of measurement with a distortion measurement unit. The point of measurement could be established at a receiver optical connection plane, for measuring the optical transmission link and transmitter penalty, or could be at the optical connection plane of a transmitter, for measuring the performance of the transmitter. The optical path may include optical amplifiers, dispersion compensating modules, active and passive components.

公开(公告)号：EP0803139B1

公开(公告)日：1998-11-25

申请号：EP95933280.0

申请日：1995-10-11

申请人： NORTHERN TELECOM LIMITED

发明人： LI, Guo, Ping ,  MAKINO, Toshi ,  HUI, Rongqing

IPC分类号： H01S3/11 ,  H01S3/25

CPC分类号： H01S5/0608 ,  H01S5/0615 ,  H01S5/06258 ,  H01S5/5063

摘要： A system for generating an ultra short optical pulse by pumping a semiconductor signal laser with an optical pulse from a semiconductor probe laser. The signal laser has dual segments each operated under different d.c. injection current levels. The probe laser is modulated with a pulsed input and the optical output thereof is coupled via optical means to the signal laser so as to Q-switch the latter. Optical pulses in the 65 ps range result.