Reconfigurable optical add/drop multiplexer

An optical add-drop multiplexer and optical signal technology, applied in the field of communications, can solve the problems of high polarization sensitivity of input optical signals, deterioration of device insertion loss and crosstalk performance, and increased complexity of optical paths, etc.

Active Publication Date: 2018-11-13
HUAWEI TECH CO LTD
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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

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Embodiment Construction

[0029] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to limit a specific order.

[0030] In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

[0031] In order to facilitate understanding of the embodiment of the present application, relevant elements involved in the embodiment of the present application are firstly introduced here.

[0032] The microring up-download filter is a microring structure used...

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Abstract

The embodiments of the present invention provide a reconfigurable optical add/drop multiplexer and belongs to the communication technological field. With the reconfigurable optical add/drop multiplexer of the invention adopted, a problem that an existing ROADM has high polarization sensitivity to input optical signals can be solved, and problems such as increase in optical path complexity and insertion loss with the increase of dimensions can be solved. The reconfigurable optical add/drop multiplexer comprises N input ports, N output ports, M upload ports, and M download ports; each input portand each upload port are connected with one first polarizer; each output port and each download port are connected with one second polarizer; the first end of the first polarizer is connected with the second end of the first polarizer, so that a loop comprising the first polarizer can be formed; the first end of the second polarizer is connected with the second end of the second polarizer, so that a loop comprising the second polarizer can be formed; an annular waveguide array exists between a loop LIi and a loop LOj; and a second loop waveguide group exists between the loop LIi and a loop LDk.

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...

Claims

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Application Information

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IPC IPC(8): G02B6/27G02B6/293H04J14/02
CPCH04J14/0202H04J14/0212G02B6/2713G02B6/2773G02B6/2934G02B6/2938H04J14/02H04Q11/00G02B6/27G02B6/293G02B6/29395G02B6/29383G02B6/29343G02B6/2793G02B6/29302G02B6/29382H04B10/50H04B10/60H04J14/021H04J14/0201
Inventor 冀瑞强付生猛李彦波张乐伟曾理
Owner HUAWEI TECH CO LTD
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