Optical transmission system, method for analyzing thereof, terminal station device, and management device
AssigneeNEC Corporation
InventorYoshihisa Inada
Life of this patent
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Abstract
An optical transmission system includes: a terminal station device that transmits a wavelength multiplexed optical signal resulting from multiplexing an optical signal and dummy light; and an optical add-drop multiplexer that receives respective wavelength multiplexed optical signals transmitted from a plurality of the terminal station devices and performs add-drop processing on the wavelength multiplexed optical signals. The dummy light has a wavelength arrangement in which adjacent wavelengths are arranged with equal spacing, and the wavelength arrangement of the dummy light differs between the terminal station devices.
Claims7
An optical transmission system comprising:
- a first transmitter configured to output a first wavelength multiplexed signal including a first optical signal and a first dummy light, wherein the first dummy light has a first light spectrum width;
- a second transmitter configured to output a second wavelength multiplexed signal including a second optical signal and a second dummy light, wherein the second dummy light has a second light spectrum width different in length from the first light spectrum width;
- a multiplexer configured to multiplex the first wavelength multiplexed signal and the second wavelength multiplexed signal;
- an optical receiver configured to receive, from the multiplexer, a third wavelength multiplexed signal including the first wavelength multiplexed optical signal and the second wavelength multiplexed optical signal, wherein the optical receiver comprises a monitor;
- and wherein the monitor configured to distinguish the first wavelength multiplexed signal and the second wavelength multiplexed signal based on the difference between the first light spectrum width and the second light spectrum width.
An optical transmission method comprising:
- outputting a first wavelength multiplexed signal including a first optical signal and a first dummy light, wherein the first dummy light has a first light spectrum width;
- outputting a second wavelength multiplexed signal including a second optical signal and a second dummy light, wherein the second dummy light has a second light spectrum width different in length from the first light spectrum width;
- multiplexing the first wavelength multiplexed signal and the second wavelength multiplexed signal;
- receiving a third wavelength multiplexed signal including the first wavelength multiplexed signal and the second wavelength multiplexed signal,
- and distinguishing the first wavelength multiplexed signal and the second wavelength multiplexed signal based on the difference between the first light spectrum width and the second light spectrum width.
Dependencies are inferred from the claim text.