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US 12,513,439 B2Granted
Path switching device, optical transmission system, and path switching method
AssigneeNEC Corporation
InventorAkira Masuda
Life of this patent
Estimating the term…
Abstract
Provided is a path switching device including a wavelength separator that wavelength-separates signal light and monitoring light having a wavelength different from a wavelength of the signal light, a signal light path switcher that switches a path of the signal light, and a monitoring light path controller that controls a path of the monitoring light, wherein the monitoring light path controller sets a path of the monitoring light to one path regardless of a switching state of a path of the signal light.
Claims13
A path switching device comprising:
- a wavelength separator configured to wavelength-separates signal light and monitoring light having a wavelength different from a wavelength of the signal light;
- a signal light path switcher configured to switch a path of the signal light;
- and
- a monitoring light path controller comprising:
- a memory storing instructions;
- and
- a processor connected to the memory and configured to execute the instructions to
- control a path of the monitoring light by setting a path of the monitoring light to one path regardless of a switching state of a path of the signal light.
5 more elements
A path switching method executed by a computer, the method comprising:
- wavelength-separating signal light and monitoring light having a wavelength different from a wavelength of the signal light;
- switching a path of the signal light;
- and
- controlling a path of the monitoring light by setting a path of the monitoring light to one path regardless of a switching state of a path of the signal light.
1 more element
Dependencies are inferred from the claim text.