Granted Patent B2

US 12,362,831 · App. 18/008,523 · Granted Jul 15, 2025

Inventors: Kota Asaka (Musashino, JP); Keita Nishimoto (Musashino, JP); Yukio Toyoshima (Musashino, JP); Takashi Yamada (Musashino, JP); Junichi Kani (Musashino, JP)

Assignee: Nippon Telegraph and Telephone Corporation

H04B10/291H04B10/27

Abstract

Claims (14)

1. An optical main signal processing node apparatus comprising:

an input port configured to input an optical signal multiplexed with signals pertaining to a plurality of services from an optical transmission path;

an output port configured to output the optical signal multiplexed with the signals pertaining to the plurality of services to the optical transmission path;

an optical main signal processer configured to perform optical main signal processing on the optical signal input from the input port; and

a path switch configured to switch a path of the optical signal input from the input port to one of a first path for guiding the optical signal to the output port and a second path for guiding the optical signal to the optical main signal processer,

wherein the path switch is configured to guide each signal multiplexed with the optical signal to a predetermined path, and operate in response to a control of a controller configured to perform processing in accordance with content of an optical main signal processing table that stores pieces of information indicating paths for the respective signals multiplexed with the optical signal in association with each other.

2. An optical main signal processing node apparatus comprising:

an input port configured to input an optical signal multiplexed with signals pertaining to a plurality of services from an optical transmission path;

an output port configured to output the optical signal multiplexed with the signals pertaining to the plurality of services to the optical transmission path;

an optical main signal processer configured to perform optical main signal processing on the optical signal input from the input port; and

a path switch configured to switch a path of the optical signal input from the input port to one of a first path for guiding the optical signal to the output port and a second path for guiding the optical signal to the optical main signal processer,

wherein

the path switch is preset toward the second path, and

the optical main signal processer discards is configured to discard a signal with a wavelength that is not used.

Assignments (2)

Continuity (1)

References Cited (17)