公开(公告)号：DE60115508T2

公开(公告)日：2006-08-31

申请号：DE60115508

申请日：2001-12-13

Applicant: AXSUN TECH INC

Inventor： KORN A ,  ATIA A

IPC: G01J3/26 ,  G02B6/34 ,  G02B26/00 ,  H04B10/077 ,  H04B10/079 ,  H04J14/02

Abstract: A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally, discrepancies between the determined or detected channel inventory and a perpetual inventory for the WDM signal, which perpetual inventory specifies the channels that should be present in the WDM signal assuming proper operation of the network. The system includes a tunable optical filter (110) that scans a pass band across a signal band of a WDM signal (10) to generate a filtered signal (114). A photodetector (116) then generates an electrical signal (118) in response to this filtered signal. A decision circuit (130) compares the electrical signal to a threshold and a controller (150), which is responsive to the decision circuit, inventories the channels in the WDM signal (10).

公开(公告)号：DE60115508D1

公开(公告)日：2006-01-05

申请号：DE60115508

申请日：2001-12-13

Applicant: AXSUN TECH INC

Inventor： KORN A ,  ATIA A

IPC: G01J3/26 ,  G02B6/34 ,  G02B26/00 ,  H04B10/077 ,  H04B10/079 ,  H04J14/02

Abstract: A scanning optical monitoring system and method are appropriate for high speed scanning of a WDM signal band. The system and method are able to identify dropped channels or, more generally, discrepancies between the determined or detected channel inventory and a perpetual inventory for the WDM signal, which perpetual inventory specifies the channels that should be present in the WDM signal assuming proper operation of the network. The system includes a tunable optical filter (110) that scans a pass band across a signal band of a WDM signal (10) to generate a filtered signal (114). A photodetector (116) then generates an electrical signal (118) in response to this filtered signal. A decision circuit (130) compares the electrical signal to a threshold and a controller (150), which is responsive to the decision circuit, inventories the channels in the WDM signal (10).