Method and device for monitoring wdm signal light
AssigneeNEC Corporation
InventorBaku Kikuchi
Life of this patent
Estimating the term…
Abstract
A WDM signal light monitoring device includes a first monitor for monitoring input-side WDM main signal light and output-side WDM main signal light for each wavelength; and a second monitor for monitoring the first monitor by comparing a monitoring result received from an upstream WDM transmission device with a monitoring result of the first monitor, wherein the monitoring result of the first monitor is transmitted to a downstream WDM transmission device in the system.
Claims20
A device for monitoring wavelength division multiplexing (WDM) signal light in a WDM transmission system, comprising:
- a first monitor for monitoring input-side WDM main signal light and output-side WDM main signal light for each wavelength;
- and
- a second monitor for monitoring the first monitor by comparing a monitoring result received from an upstream WDM transmission device with a monitoring result of the first monitor, wherein the monitoring result of the first monitor is transmitted to a downstream WDM transmission device in the system.
A method for monitoring signal light in a wavelength division multiplexing (WDM) transmission device which transmits WDM signal light, comprising:
- at a first monitor, monitoring input-side WDM main signal light and output-side WDM main signal light for each wavelength;
- and
- at a second monitor, monitoring the first monitor by comparing a monitoring result received from an upstream WDM transmission device with a monitoring result of the first monitor, wherein the monitoring result of the first monitor is transmitted to a downstream WDM transmission device in the system.
A computer-readable program stored in a recording medium, for instructing a program-controlled processor to monitor signal light in a wavelength division multiplexing (WDM) transmission device which transmits WDM signal light, the program comprising:
- at a first monitor, monitoring input-side WDM main signal light and output-side WDM main signal light for each wavelength;
- and
- at a second monitor, monitoring the first monitor by comparing a monitoring result received from an upstream WDM transmission device with a monitoring result of the first monitor, wherein the monitoring result of the first monitor is transmitted to a downstream WDM transmission device in the system.
Dependencies are inferred from the claim text.