Reconfigurable optical add-drop multiplexer and reconfigurable optical add-drop multiplexing method

Abstract

The invention provides a reconfigurable optical add-drop multiplexer and a reconfigurable optical add-drop multiplexing method. The reconfigurable optical add-drop multiplexer comprises an optical processing unit and a first output port, wherein the optical processing unit is used for receiving a first optical signal including multiple optical channels and processing the first optical signal to generate a second optical signal; the second optical signal at least comprises a part of one optical channel in the multiple optical channels of the first optical signal; and the second optical signal generated by the optical processing unit is externally output by the first output port. According to the reconfigurable optical add-drop multiplexer and the reconfigurable optical add-drop multiplexing method, any number of dimensionalities can be supported, the adding / dropping and the going to / coming from an optical channel of any broadband and any wavelength in any direction can be realized, and any part of wavelength and any part of the broadband of the optical channel can be output to other external reconfigurable optical add-drop multiplexer nodes so as to meet the demands on colorless, directionless, contentionless and gridless.

Description

technical field [0001] The present invention generally relates to optical add-drop multiplexing technology in the field of optical communication, and more specifically relates to a reconfigurable optical add-drop multiplexer and a reconfigurable optical add-drop multiplex method. Background technique [0002] In recent years, more and more new types of telecommunication services have emerged. These new services make people's demand for network bandwidth increasing day by day. Compared with traditional telecommunication services, these new services often have higher dynamic characteristics and unpredictability, so it is required that the optical network as the physical layer of transmission should provide higher flexibility. At the same time, the maturity of the ultra-long-distance Dense Wavelength Division Multiplexing (DWDM) system has shifted the bottleneck of network services from bandwidth construction to bandwidth management. On the core network nodes, it is often nec...

AI Technical Summary

Problems solved by technology

However, in the existing ROADM, in order to meet the requirements of colorless (Colorless), non-directional (Directionless), non-blocking (Contentionless) and non-gridless (Gridless), it is necessary to cascade multiple WSS or WB, This makes the ROADM structure complex and expensive

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