A reconfigurable optical add-drop multiplexer

Abstract

The embodiment of the present application provides a reconfigurable optical add-drop multiplexer, which relates to the field of communication technology. It can not only solve the problem of high polarization sensitivity of the existing ROADM to the input optical signal, but also solve the problem of This leads to problems such as increased optical path complexity and increased insertion loss. The reconfigurable optical add-drop multiplexer includes: N input ports, N output ports, M upload ports and M download ports, each input port and each upload port are connected to a first polarizer, each The output port and each download port are connected to a second polarizer; the first end of the first polarizer is connected to the second end of the first polarizer to form a loop including the first polarizer; the first end of the second polarizer Connect with the second end of the second polarizer to form a loop including the second polarizer; loop L Ii with Loop L Oj Between the ring waveguide array, the loop L Ii with Loop L Dk There is a second set of ring waveguides in between.

Description

technical field [0001] The embodiment of the present application relates to the technical field of communications, and in particular to a reconfigurable optical add-drop multiplexer. Background technique [0002] A reconfigurable optical add / drop multiplexer (Reconfigurable Optical ADD / DROP Multiplexer, ROADM) is a key node in a wavelength division multiplexing (Wavelength Devision Multiplexing, WDM) transmission system and an optical transport network. ROADM usually supports wavelength reconstruction in two or more directions. It can download a signal of a specific wavelength from multi-wavelength signals from any direction to the node, and can also upload a signal of any wavelength from the node to another node. The wavelength of the signal downloaded on this node can be flexibly configured locally or remotely, so that the network to which the ROADM belongs has the ability to dynamically reconfigure. [0003] In the prior art, there is a ROADM based on microring uplink an...

AI Technical Summary

Problems solved by technology

[0005] This application provides a reconfigurable optical add-drop multiplexer ROADM, which can not only solve the problem of high polarization sensitivity of the existing ROADM to the input optical signal, but also solve the complexity of the optical path caused by the increase of the dimension increase, the insertion loss of the device and the sharp deterioration of the crosstalk performance

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