WO2017190331A1

WO2017190331A1 - Reconfigurable optical add/drop multiplexer

Info

Publication number: WO2017190331A1
Application number: PCT/CN2016/081192
Authority: WO
Inventors: 闫云飞; 赵晗; 冯志勇
Original assignee: 华为技术有限公司
Priority date: 2016-05-05
Filing date: 2016-05-05
Publication date: 2017-11-09
Also published as: CN108702234B; CN108702234A

Abstract

A reconfigurable optical add/drop multiplexer, relating to the technical field of optical communications. The reconfigurable optical add/drop multiplexer comprises: an input component (101), a first wavelength dispersion component (102), a first redirection component (103), a first switch array (104) comprising (M + P) lines of switch units, a second switch array (105), a third switch array (106) and an output component (107). After (M + P) input beams input from the input component (101) are dispersed by the first wavelength dispersion component (102), M sub-beams of the input beams and P sub-beams of the input beams are obtained, and some sub-beams of the M sub-beams are respectively routed to N output ports via the first, second and third switch arrays (104, 105, 106). Some sub-beams are respectively routed to Q output ports via the first, second and third switch arrays (104, 105, 106). The P sub-beams of the input beams are respectively routed to N output ports via the first, second and third switch arrays (104, 105, 106). The reconfigurable optical add/drop multiplexer is applied to the process of optical communications.

Description

Reconfigurable optical add/drop multiplexer

Technical field

The present invention relates to the field of optical communication technologies, and in particular, to a reconfigurable optical add/drop multiplexer.

Background technique

At present, in an optical communication network, an optical network node located at a tangent to a plurality of ring networks needs to process a dimension switching service that exchanges a wavelength division multiplexed beam to other dimensions, and a beam that is condensed from the lower layer to the local node is switched to a target dimension. The uplink service and the beam that communicates with other nodes in the need of other dimensions are exchanged to the lower-wave service of the node. In order to be able to process the above services at the same time, a Reconfigurable Optical Add/Drop Multiplexer (ROADM) is generally used at the optical network node.

Currently, there are multiple structures of ROADMs to achieve crossover and connectivity between optical network nodes. For example, an N*M ROADM is known that includes M input ports, N output ports, and a two-stage switch array, wherein M input ports are used to input WDM beams, and the first stage switch array includes M*K ( M rows, K columns) switch units for optically processing the sub-beams of the WDM beam, and transmitting the processed sub-beams to the switching unit of the second-stage switch array, the second-stage switch array comprising N two-dimensional Arranged switching units for outputting sub-beams processed through the first stage switch array to N output ports. Since the second-stage switch array is arranged in two dimensions, the N*M ROADM can implement more output ports, but limited by the configuration structure and optical path design, the N*M ROADM can only implement the down-wave function, and if needed, simultaneously The function of switching between upper and lower waves and dimensions requires N*M RODAM to be combined with other optical components, so that the optical network has high integration, high crossover capability and low cost in terms of size, volume and cost.

There is a need for a ROADM that achieves high integration and improves the cross-over capabilities of optical network nodes.

Summary of the invention

The invention provides a reconfigurable optical add/drop multiplexer, which can achieve high integration and improve the crossover capability of an optical network node.

In order to achieve the above object, the present invention adopts the following technical solutions:

In conjunction with the first aspect, the present invention provides a reconfigurable optical add/drop multiplexer comprising: an input component comprising M+P input ports, wherein M input ports are used for dimension input and P input ports are used for Wave, the input component is configured to output the input beam received by the M+P input ports to the first wavelength dispersion component, wherein the values of the M and P are positive integers;

a first wavelength dispersion component for receiving M input beams output by the M input ports, and dispersing the M input beams to obtain sub-beams of the M input beams; and for receiving the P input beams output by P input ports, and dispersing the P input beams to obtain sub-beams of the P input beams;

a first redirection component, configured to receive sub-beams of the M input beams output by the first wavelength dispersion component, and redirect sub-beams of the M input beams to M rows in the first switch array a switching unit; further configured to receive sub-beams of the P input beams output by the first wavelength dispersion component, and redirect sub-beams of the P input beams to P rows in the first switch array Switch unit

The first switch array includes an M+P row switch unit, each row includes K1 switch units, the K1 switch units are respectively corresponding to K1 wavelengths, and the K1 switch units are respectively used to route respective wavelengths of the sub-switches. a light beam to the second switch array; the M-row switch unit, configured to receive the sub-beams of the M input beams, and route the A sub-beams to the Z-row switch unit of the second switch array, and set the B sub-beams Routing to a J-row switch unit of the second switch array; the P-row switch unit for receiving sub-beams of the P input beams and routing sub-beams of the P input beams to the second switch a Z row switch unit of the array; wherein the values of A, B, and K1 are positive integers;

The second switch array includes a Z+J row switch unit, each row includes K2 switch units, the K2 switch units are corresponding to K2 wavelengths, and the K2 switch units are respectively used to route respective wavelengths of the sub-switches. a beam to a third switch array, the Z row switch unit for receiving the sub-beams of the A sub-beams and the P input beams, and routing to N rows of switching units of the third switch array; the J-row switch a unit for receiving the B sub-beams, and Routed to the Q row switch unit of the third switch array; wherein, the values of Z and J are both positive integers, and the K2=K1;

The third switch array includes an N+Q row switch unit, each row includes K3 switch units, the K3 switch units are respectively corresponding to K3 wavelengths, and the K3 switch units are respectively used to route respective corresponding sub-beams to An output component; the N-row switch unit, configured to receive the sub-beams of the A sub-beams and the P input beams and route to N output ports of an output component; the Q-row switch unit is configured to receive The B sub-beams are routed to the Q output ports of the output component; wherein, the values of the N and Q are positive integers, and the K3=K2=K1;

An output component comprising N+Q output ports, the N output ports are configured to receive the sub-beams of the A sub-beams and the P input beams, and output to different dimensions, the Q output ports are used for The B sub-beams are received and the lower waves are received.

The reconfigurable optical add/drop multiplexer provided by the present invention can realize the slave input by setting the input component, the first dispersion component, the first redirection component, the first switch array, the second switch array and the third switch array A part of the sub-beams (A sub-beams) of the M beams input by the M input ports of the component are routed to the N output ports for dimension exchange; a part of the sub-beams (B sub-beams) and input by P input ports The sub-beams of the P beams for the upper wave are coupled to the Q output ports to achieve the lower wave. The reconfigurable optical add/drop multiplexer can replace the existing multiple optical modules with different functions to implement optical add/drop multiplexing, and the integration degree is high.

With reference to the first aspect, in a first implementation manner of the first aspect, the reconfigurable optical add/drop multiplexer further includes: a second redirection component and a second wavelength dispersive component; the third switch array, Specifically for routing the A sub-beams, the sub-beams of the P input beams, and the B sub-beams to the output component through the second redirection component and the second wavelength dispersion component; wherein a second redirection component, configured to receive, in a wavelength expansion plane, the A sub-beams, the B sub-beams, and the sub-beams of the P input beams output by the third switch array, and the A sub- The light beam, the B sub-beams, and the sub-beams of the P input beams are redirected and output to the second wavelength dispersion component; the second wavelength dispersion component is configured to receive the second weight in a wavelength expansion plane And outputting, by the directional component, the A sub-beams, the B sub-beams, and the sub-beams of the P input beams, and combining the A sub-beams and the sub-beams of the P input beams, and outputting the output to the output Component, the B children The beam is combined and output to the output component.

In conjunction with the first implementation of the first aspect, in a second implementation of the first aspect, the reconfigurable optical add/drop multiplexer further includes: a first spot expanding component and a second spot expanding component The input component is specifically configured to output, by the first spot expansion assembly, an input beam received by the M+P input ports to a first wavelength dispersion component at a wavelength expansion plane; wherein the first spot a beam expanding component for receiving M+P input beams output by the input component in a wavelength expansion plane and changing beam characteristics of the M+P input beams, and outputting to the first wavelength dispersion component; a two-wavelength dispersion component, specifically for outputting a multiplexed beam to the output component through the second spot expanding assembly at a wavelength expansion plane; wherein the second spot expanding component is used for wavelength expansion The plane receives the combined beam outputted by the second wavelength dispersion component, and changes the beam characteristics of the combined beam to be output to the output component.

By providing the first spot expanding assembly, the reconfigurable optical add/drop multiplexer provided by the present invention can perform spot conversion on the input beam of the input component, so that the input beam can better satisfy the processing characteristics of the subsequent optical component, thereby improving The processing performance of the reconfigurable optical add/drop multiplexer. By setting the second spot expanding assembly, the beam can be inversely transformed by the spot, so that the beam can better satisfy the processing characteristics of the output component, thereby improving the processing performance of the reconfigurable optical add/drop multiplexer.

In conjunction with the second implementation of the first aspect, in a third implementation manner of the first aspect, the first spot expanding component is specifically configured to receive M+P outputs of the input component in a wavelength expansion plane. Inputting a light beam and changing a spot size of the M+P input beams to increase a spot size and outputting to the first wavelength dispersion component; the second spot expanding component, specifically for receiving the wave expansion plane The multiplexed light beam output by the second wavelength dispersion component changes the spot size of the combined wave beam to make the spot become smaller and output to the output component.

With reference to the first aspect, or any one of the first implementation manner, the second implementation manner, and the third implementation manner of the first aspect, in the fourth implementation manner of the first aspect, the reconfigurable The optical add/drop multiplexer further includes a third redirection component and/or a fourth redirection component; the first switch array, specifically for using the third redirection beam to pass the A subbeams through the third redirection component And the sub-beams of the B sub-beams and the P input beams are routed to the second switch array; wherein the third redirection component is configured to receive the output of the first switch array in a wavelength expansion plane The A sub-beams, the B sub-beams, and the P inputs a sub-beam of the light beam and redirected to the second switch array; the second switch array, specifically for using the fourth redirection component to pass the A sub-beams, the B sub-beams, and the The sub-beams of the P input beams are routed to the third switch array; wherein the fourth redirection component is configured to receive the A sub-beams output by the second switch array in a wavelength expansion plane, B sub-beams and sub-beams of the P input beams are redirected to the third switch array.

The setting of the third redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the first switch array in the wavelength expansion plane direction, so that the sub-beams of the same wavelength are at the wavelength The unrolling plane is routed to the same location of the second switch array. Similarly, the setting of the fourth redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the second switch array in the wavelength expansion plane direction, so that the sub-wavelengths of the same wavelength The beam is routed in the plane of the wavelength development plane to the same location of the third switch array.

In combination with the first aspect, or the first implementation manner, the second implementation manner, the third implementation manner, and the fourth implementation manner of the first aspect, in a fifth implementation manner of the first aspect, The reconfigurable optical add/drop multiplexer further includes: a third spot expanding component and a fourth spot expanding component; the input component, specifically for expanding the third spot through the port switching plane The component outputs an input beam received by the M+P input ports to the first switch array, wherein the third spot expanding component is configured to receive M+P from the input component at a port switching plane Input beam, and changing the beam characteristics of the M+P input beams, and outputting to the first switch array; the third switch array is specifically configured to pass the fourth spot expanding component at the port switching plane Routing the A sub-beams, the B sub-beams, and the sub-beams of the P input beams to the output component; wherein the fourth spot expanding component is for translating a plane from the Third switch array receiving station A sub-beam, the B sub-beams, and sub-beams of the P beams and changing beam characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P beams are output to the output component .

The third spot expanding assembly is arranged such that M+P input beams output from the M+P input ports can be routed to the position of the first switch array corresponding to each input port at the port switching plane; the fourth spot The beam expander assembly is configured to enable sub-beams of M+P input beams output from the M+P input ports to be routed to the second switch array on the port switching plane The location corresponding to the input port. The third spot expanding assembly and the fourth spot expanding assembly may include at least one lens.

With reference to the fifth implementation manner of the first aspect, in a sixth implementation manner of the first aspect, the reconfigurable optical add/drop multiplexer further includes: a fifth redirection component and/or a sixth weight An directional component; the first switch array is configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P beams to the sub-beam through the fifth redirection component at a port switching plane a second switch array, wherein the fifth redirection component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the first switch array and redirect to the The second switch array is configured to pass the sub-beams of the A sub-beams, the B sub-beams, and the P beams through the sixth redirection component in a port switching plane. Routed to the third switch array; wherein the sixth redirection component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the second switch array Directed to the third switch array.

The setting of the fifth redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the first switch array in the port switching plane, so that the sub-beams of the input beams of different input ports The port switching plane is routed to a location in the second switch array that corresponds to the input port. Similarly, the setting of the sixth redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the second switch array in the port switching plane, so as to input different input ports. The sub-beams of the beam are routed at the port switching plane to a location in the third switch array that corresponds to the input port.

With reference to the first aspect, or any one of the first implementation manner, the second implementation manner, the third implementation manner, the fourth implementation manner, the fifth implementation manner, and the sixth implementation manner In a seventh implementation manner of the first aspect, the reconfigurable optical add/drop multiplexer further includes: an input collimator array, including M+P collimators, respectively, and the M+P Corresponding to input ports for converting the input beams of the M+P input ports into collimated beams; an output collimator array comprising N+Q collimators, respectively, and the N+Q output ports Correspondingly, it is used to convert a light beam to be outputted at the N+Q output ports into a collimated light beam.

By providing an input collimator array and an output collimator array, the present invention provides a reconfigurable optical add/drop multiplexer capable of converting a beam input from M+P input ports into parallel light while expanding a beam waist value. In order to facilitate subsequent optical path processing.

In conjunction with the first implementation of the first aspect, in an eighth implementation of the first aspect, the first wavelength dispersing component and the second wavelength dispersing component each comprise at least one dispersing unit.

In conjunction with the fourth implementation of the first aspect, in a ninth implementation of the first aspect, the first redirection component and the second redirection component comprise at least one lens.

With reference to the first aspect, or the first implementation manner, the second implementation manner, the third implementation manner, the fourth implementation manner, the fifth implementation manner, the sixth implementation manner, and the seventh implementation manner of the first aspect In a tenth implementation manner of the first aspect, the first switch array, the second switch array, and the third switch are any one of a mode, an eighth implementation manner, and a ninth implementation manner. The array is one or more of a microelectromechanical system MEMS, a liquid crystal on silicon LCOS, or a planar waveguide switch array.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic block diagram of a first reconfigurable optical add/drop multiplexer according to an embodiment of the present invention;

2A is a schematic diagram of a reconfigurable optical add/drop multiplexer in a wavelength expansion plane direction according to an embodiment of the present invention;

2B is a schematic diagram of a reconfigurable optical add/drop multiplexer in a port switching plane direction according to an embodiment of the present invention;

2C is a schematic diagram of implementing inter-division optical switching by using a reconfigurable optical add/drop multiplexer according to an embodiment of the present invention;

2D is a schematic diagram of implementing a downlink wave by using a reconfigurable optical add/drop multiplexer provided by an embodiment of the present invention;

FIG. 2E is a schematic diagram of implementing a downlink wave by using the first reconfigurable optical add/drop multiplexer provided by the embodiment of the present invention.

detailed description

The technical solutions in the present embodiment will be clearly and completely described in the following with reference to the drawings in the embodiments. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solution of the present invention can be applied to various communication systems capable of transmitting data by using a light beam (or signal light), for example, Global System of Mobile Communication (GSM), code division multiple access (CDMA) , Code Division Multiple Access (WCDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), etc.

As shown in FIG. 1 , an embodiment of the present invention provides a reconfigurable optical add/drop multiplexer, including: an input component 101, including M+P input ports, wherein M input ports are used for dimension input, P inputs. The port is for an upper wave, and the input component is configured to output the input beam received by the M+P input ports to the first wavelength dispersion component, wherein the values of the M and P are positive integers.

a first wavelength dispersion component 102, configured to receive M input beams output by the M input ports, and disperse the M input beams to obtain sub-beams of the M input beams; P input beams outputted by P input ports are used, and the P input beams are dispersed to obtain sub-beams of the P input beams.

a first redirection component 103, configured to receive sub-beams of the M input beams output by the first wavelength dispersion component 102, and redirect the sub-beams of the M input beams to the first switch array An M-row switching unit; further configured to receive the sub-beams of the P input beams output by the first wavelength dispersion component 102, and redirect the sub-beams of the P input beams to the first switch array P row switch unit.

The first switch array 104 includes an M+P row switch unit, each row includes K1 switch units, the K1 switch units are corresponding to K1 wavelengths, and the K1 switch units are respectively used to route respective wavelengths. a sub-beam to the second switch array; the M-row switch unit is configured to receive the sub-beams of the M input beams, and route the A sub-beams to the Z-row switch unit of the second switch array, and then B sub- The beam is routed to the J row of the second switch array a P-row switch unit, configured to receive the sub-beams of the P input beams, and route the sub-beams of the P input beams to the Z-row switch unit of the second switch array; The values of A, B and K1 are all positive integers.

The second switch array 105 includes a Z+J row switch unit, each row including K2 switch units, the K2 switch units one-to-one corresponding to K2 wavelengths, and the K2 switch units are respectively used to route respective wavelengths. a sub-beam to a third switch array, the Z-row switch unit for receiving the sub-beams of the A sub-beams and the P input beams, and routing to N rows of switch units of the third switch array; And a switching unit, configured to receive the B sub-beams and route to the Q-row switching unit of the third switch array; wherein the values of Z and J are both positive integers, and the K2=K1.

The third switch array 106 includes N+Q row switch units, each row includes K3 switch units, the K3 switch units are corresponding to K3 wavelengths, and the K3 switch units are respectively used to route respective sub-beams. To the output component; the N rows of switching units for receiving the sub-beams of the A sub-beams and the P input beams and routing to N output ports of the output component; the Q-row switching unit for receiving The B sub-beams are routed to the Q output ports of the output component; wherein the values of the N and Q are positive integers, and the K3=K2=K1.

The output component 107 includes N+Q output ports, and the N output ports are configured to receive the sub-beams of the A sub-beams and the P input beams, and output to different dimensions, where the Q output ports are used The B sub-beams are received and the lower waves are received.

The function and structure of each device of the reconfigurable optical add/drop multiplexer will be described below.

A1. Input components

In an embodiment of the invention, the input component includes M+P input ports. Input port can They are arranged in one dimension and can also be arranged in two dimensions. Among them, M input ports are used to acquire beams of M dimensions. The beams of the M dimensions may be Wavelength Division Multiplex (WDM) light. A bundle of WDM beams may include a plurality of (at least two) sub-beams, the center wavelength of each sub-beam (or the center frequency of each sub-beam) being different from each other. Wherein, the beams of the M dimensions may be beams of light from different foreign communication nodes (eg, the last hop communication node in the communication link). In addition, the P input ports are used to acquire a local wave of the upper wave, and the up beam may be a single wavelength beam or WDM light. The upstream beam may be a light beam sent to a foreign communication node or a light beam sent to a local communication node, which is not particularly limited in the present invention.

In addition, the foregoing dimension may refer to the number of categories whose source is under the preset rule (or the number of optical fibers to which the reconfigurable optical add/drop multiplexer is connected), and the preset rule may be divided by a region, for example, It is divided into city level, province level or country level; it can also be divided into entities. For example, one communication node is one dimension, or a group of communication nodes is one dimension.

It should be understood that the above-mentioned methods of dividing the dimensions are merely exemplary, and the present invention is not particularly limited thereto, and other methods for dividing the communication nodes can fall within the protection scope of the present invention.

Optionally, in the embodiment of the present invention, the reconfigurable optical add/drop multiplexer may further include an input optical fiber array and an input collimator array.

The input fiber array may comprise M+P input fibers arranged in one or two dimensions, wherein M input fibers are used to acquire beams from various dimensions, and the remaining P fibers are used to acquire beams of the upper waves.

The input collimator array may include one-dimensionally arranged or two-dimensionally arranged M+P collimators corresponding to the M+P input ports, respectively, for converting the light beams input by the M+P input ports into Collimate the beam. Wherein, the M+P collimators are in one-to-one correspondence with the M+P input fibers, and a collimator is used for collimating the light beam output from the corresponding input fiber, and can also be understood as a beam inputting the input fiber. Converted into parallel light while expanding the beam waist value for subsequent optical path processing.

A2. First wavelength dispersion component

In the embodiment of the present invention, the wavelength dispersion component may utilize a diffraction mode to decompose the light beam into wavelengths (or center frequency points) in a sub-wavelength switching plane (or a top view plane). Each of the sub-beams, and thus each of the sub-beams output from the wavelength dispersion component, is radially dispersed in the plane of the wavelength development plane.

In an embodiment of the invention, the first wavelength dispersion component may decompose the light beam input from the M+P input ports into sub-beams of different wavelengths.

For example, if each input beam is composed of K sub-beams of different wavelengths, the first wavelength dispersion component can decompose the M+P input beams into (M+P)*K sub-beams.

The first wavelength dispersion component includes at least one dispersion unit such as a grating or the like. For example, the wavelength dispersion component can be an arrayed waveguide grating, a reflective grating, a transmissive grating, a dispersive prism, or a planar waveguide grating. Moreover, in order to increase the dispersion effect, a plurality of grating combinations may be employed, or the optical path may be adjusted to pass the light beam through the same grating multiple times.

A3. First redirect component

The first redirecting component can route each sub-beam to the same location in the first switch array in a wavelength expansion plane by changing the beam propagation path of each sub-beam. In an embodiment of the present invention, the first redirection component may receive the sub-beams of the M+P input beams from the first wavelength dispersion component and change the beam propagation of the sub-beams of the M+P input beams in the wavelength expansion plane direction. The feature is such that sub-beams of the same wavelength are routed to the same position of the switch array in the plane of the wavelength development. Specifically, the first redirection component may separately route the sub-beams of the M input beams received from the M input ports to the switch unit corresponding to the wavelength of the sub-beams in the M-row switch unit of the first switch array, and The sub-beams of the P input beams received from the P input ports are routed to the switching units corresponding to the wavelengths of the sub-beams in the P-row switching units of the first switch array.

Optionally, the first redirecting component comprises at least one lens. For example, the first redirection component can include a lens, a concave mirror, or a cylindrical lens. And, depending on the selected device as the first redirection component, the configurations of the devices of the reconfigurable optical add/drop multiplexer are different, or the beams are in the reconfigurable optical add/drop multiplexer. The transmission paths are different.

A3. First switch array

In the embodiment of the present invention, the first switch array may include switch units in which at least M+P rows are arranged in one dimension or two dimensions, and each row of switch units includes K1 switch units, and each switch unit is used to route each A sub-beam of the corresponding wavelength. K1 may be the maximum number of sub-wavelengths of the wavelength division multiplexed signal input by the M+P input ports. Optionally, the M+P row in the first switch array Each of the switch units in each of the switch units is configured to determine a target sub-beam from among a plurality of sub-beams transmitted to each of the switch units, and route the target sub-beam to the row of switch units Output port.

Wherein each of the M input ports for dimension input is in one-to-one correspondence with each row of the M-row switch units in the first switch array; the M-row switch unit is used for M The sub-beams of the beam input by the dimension are routed, and a part of the sub-beams (A sub-beams) of the light beams input by the M dimensions are transmitted to the Z-row switching unit of the second switch array to facilitate dimensional exchange after subsequent processing; The sub-beams (B sub-beams) are transmitted to the J-row switching units of the second switch array to facilitate the subsequent waves after subsequent processing. Specifically, when routing the sub-beams of the M input beams, the sub-beams may be pre-processed, part of the sub-beams are discarded, and the remaining sub-beams are split into two parts and transmitted to the Z of the second switch array. Row switch unit and J row switch unit.

Each of the P input ports for the upper wave is respectively in one-to-one correspondence with each of the P-row switch units in the first switch array, and each sub-beam of the light beam input from each input port Corresponding to each of the K switching units of the corresponding row; the P row switching unit is configured to route the P upper wave beams, so that the P upper wave beams can be transmitted to the Z switch unit of the second switch array The dimension exchange is implemented after subsequent processing.

A4. Second switch array

In the embodiment of the present invention, the second switch array may include a switch unit in which the Z+J rows are arranged in one dimension or two dimensions, and each row of switch units includes K2 switch units, and each switch unit is used for routing correspondingly. The sub-beam of the wavelength. Optionally, each of the switch cells in each of the Z+J row switch units in the second switch array is configured to determine a target from among a plurality of sub-beams transmitted to each of the switch units The beam is routed to the corresponding output port of each row of switch units.

The value of Z may be less than or equal to N; that is, the Z row switch unit in the second switch array may be in one-to-one correspondence with the N output ports for dimension output, that is, one row of switch units corresponding to one output port Or a row of switch units corresponding to multiple output ports. The Z-row switch unit can be used to process beams exchanged between dimensions, and the Z-row switch unit in the second switch array can also be used to process local up-wave beams. As described above, the Z-line switching unit is used to receive P-parts in addition to the partial sub-beams from the M beams. Input the local wave of the local wave. In other words, each of the Z-row switching units can receive a partial sub-beam (A sub-beams) of light beams from M dimensions and a sub-beam of P beams from the upper wave port. Each of the Z-row switch units may determine a target sub-beam from the plurality of sub-beams, and the combination of the plurality of target sub-beams determined by the plurality of switch units in each row of the switch units is the switch unit of each row The output beam of the corresponding dimension output port.

Where J is a positive integer. Specifically, when J is smaller than M, each row of the J-row switch units in the second switch array is used to route sub-beams of the dimensional beam input from each input port, and at this time, has a wavelength blocking characteristic, That is, the sub-beams of the same wavelength cannot be simultaneously output from any of the lower-wave output ports when the down-wave is used. The smaller the J, the more severe the wavelength blocking characteristic. It can be understood that the J-row switching unit can route a part of the sub-beams (B sub-beams) of all the sub-beams obtained by dispersing the M beams to the Q switching units of the third switch array. When J=M, there is no wavelength blocking characteristic, that is, the sub-beams of the same wavelength can be simultaneously output from any lower-wave output port when the lower wave is used.

When J=M, each row of the J-row switch units in the second switch array is used to route sub-beams of the input beam of the input port corresponding to each row of switch units, in the J-row switch unit Each of the switch units of each row is used to route a first sub-beam transmitted to each of the switch units to an output port corresponding to the first sub-beam; specifically, J in the second switch array The row switch unit can be in one-to-one correspondence with M input ports for dimensional input, and the J row switch unit can be used to process the local lower beam. It can be understood that the J-row switch unit has a one-to-one correspondence with the M input ports for the dimension input, so that the J-row switch unit also has one-to-one correspondence with the M beams, that is, all the sub-beams of the M beams can be Routed to the J-row switch unit, that is, the value of A described above is 0, and the value of B is the value of all sub-beams. Each of the J-row switch units routes the received first sub-beam such that the first sub-beam is transmitted through the third switch array to a lower-wave output port corresponding to the first sub-beam. Thereby, the scheduling process of the sub-beams input from each dimension to the local lower wave is completed.

It should be understood that the specific rule that the J-row switch unit routes the sub-beams of the M-dimensions may be performed according to the upper layer configuration or the remote configuration, or may be performed according to other rules, which is not limited by the embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the Z+J row switch unit of the second switch array Corresponding to M dimension input ports and N dimension output ports, respectively, regardless of the number of P uplink ports and Q downlink ports. Therefore, the number of the upper wave port and the lower wave port in the embodiment of the present invention is not limited by the size of the second switch array, so that the number of the upper wave port and the lower wave port in the embodiment of the present invention can be more Large scale.

A5, the third switch array

In the embodiment of the present invention, the third switch array may include a one-dimensional arrangement or a two-dimensional arrangement of N+Q row switch units, each row of switch units including K3 switch units, and the K3 switch units are in one-to-one correspondence. K3 wavelengths. The N rows of switching units are respectively in one-to-one correspondence with the N output ports for the dimension output; the Q row switching units are respectively in one-to-one correspondence with the Q output ports for the lower waves. As described above, the N rows of switching units are configured to receive partial sub-beams (A sub-beams) of M input beams and sub-beams of P input beams from the Z-row switching unit of the second switch array and route to the output N output ports of the component to implement dimension exchange; the Q row switch unit for receiving partial sub-beams (B sub-beams) of M input beams from the J-row switch unit of the second switch array and routing to the output component Q output ports to achieve the lower wave.

By way of example and not limitation, a switch array (eg, a first switch array, a second switch array, or a third switch array) in an embodiment of the invention may be one of a MEMS, LCOS, or planar waveguide switch array or A variety.

For example, in the embodiment of the present invention, the switch array can be realized by a Micro-Electro-Mechanical System (MEMS) technology, and the MEMS technology is to have a geometric size or an operation size only in the order of micrometers, submicrometers or even nanometers. The MEMS and control circuits are highly integrated into a very small space on a silicon-based or non-silicon-based material to form a mechatronic device or system. A switch array implemented by MEMS technology mechanically moves a micromirror by electrostatic force or other control force, thereby deflecting a beam hitting the micromirror into either direction. In the case of implementing the switch array of the present invention by MEMS technology, the controller can control the micromechanical structure by controlling the command to drive the light modulator (microlens) to rotate, thereby realizing the deflection of the optical path, thereby realizing the beam dimension (or , transmission path) switching.

For example, in the embodiment of the present invention, the switch array can be realized by a liquid crystal on-silicon (LCOS) technology. The LCOS technology utilizes the principle of a liquid crystal grating to adjust the light reflection angle of different wavelengths to achieve the purpose of separating light. Since there are no moving parts, LCOS technology has considerable reliability. LCOS technology uses liquid crystal cell refractive index change control to achieve reflection angle variation, which can be easily extended and upgraded. Different channels correspond to different regions of the spatial light modulator (liquid crystal) array, and the direction of the light is adjusted by adjusting the phase of the spot to achieve the purpose of switching different ports and adjusting the attenuation.

For example, in the embodiment of the present invention, the switch array can be realized by a liquid crystal (LC) technology. In the switch array realized by the LC technology, the incident light beam passes through the birefringent crystal and is divided into two polarization states, wherein After passing through the half-wave plate, the polarization of the two channels is the same, and then on the switch array (liquid crystal module), by adjusting the voltage of the birefringent crystal to change the arrangement of the liquid crystal (changing the angle of the molecules inside the crystal), thereby The refractive index of the crystal changes, and the light source outputs light at different angles. Light passes through each layer of liquid crystal and has two directions to choose from. After passing through multiple layers of liquid crystal layers, multiple light paths can be selected.

For example, in the embodiment of the present invention, the switch array can be implemented by digital light processing (DLP) technology, and the internal structure of the switch array realized by the DLP technology is similar to the internal structure of the light modulator implemented by the MEMS technology. Switching of light energy is achieved by deflection of the microlens. The difference is that the DLP mirror rotation angle has only a few states limiting the number of output ports.

A6. Output component

In an embodiment of the invention, the output component may include N dimension output ports for dimensional output and Q lower wave output ports for lower wave output. And, the N dimension output ports are used to transmit N dimensions of the beam, which may be required to be sent to a foreign communication node (eg, a next hop communication node in the communication link). The Q lower wave output ports are used to output a local lower beam.

Here, the "lower wave" refers to a downstream beam that needs to be transmitted to a local node in an optical network node, and the downstream beam may be a sub-beam in a beam from a foreign communication node, that is, a sub-beam from a beam of each dimension. .

Optionally, in the embodiment of the present invention, the reconfigurable optical add/drop multiplexer may further include an output optical fiber array and an output collimator array.

The output fiber array may comprise one-dimensionally arranged or two-dimensionally arranged N+Q output fibers, wherein the N output fibers are used to transmit output beams of various dimensions, and the remaining Q output fibers are used to transmit the respective downstream beams.

The output collimator array may include one-dimensionally arranged or two-dimensionally arranged N+Q collimators corresponding to the N+Q output ports for respectively preparing the light beams to be output at the N+Q output ports. Converted to a collimated beam. Wherein, the N collimators in the N+Q collimators are in one-to-one correspondence with the N output fibers, and a collimator is used for collimating the beam output from the corresponding output fiber, which can also be understood as The beam output from the output fiber is converted into a collimated beam to facilitate outputting the beam to the output port. The Q collimators in the N+Q collimators respectively correspond to the Q ports for the lower waves, and convert the light beams to be outputted at the Q output ports into collimated beams.

Optionally, the reconfigurable optical add/drop multiplexer further includes: a second redirection component and a second wavelength dispersing component, and the third switch array is specifically configured to use the A sub-beams, the P a sub-beam of the input beam and the B sub-beams are sequentially routed through the second redirection component and the second wavelength dispersion component to the output component; wherein the second redirection component is configured to receive at a wavelength expansion plane The A sub-beams, the B sub-beams, and the sub-beams of the P input beams output by the third switch array, and the A sub-beams, the B sub-beams, and the P input beams The sub-beams are redirected and output to the second wavelength dispersion component; the second wavelength dispersion component is configured to receive the A sub-beams, the B sub-outputs output by the second redirection component in a wavelength expansion plane And combining the light beam and the sub-beams of the P input beams and outputting the sub-beams of the P sub-beams and the P input beams to the output component, combining the B sub-beams and outputting the B sub-beams to the The output component.

Similar to the first redirection component, the second redirection component can include at least one lens; similar to the first wavelength dispersive component, the second wavelength dispersive component can include at least one dispersive element. Therefore, the specific implementation of the first redirection component and the first wavelength dispersion component may be referred to the foregoing, and details are not described herein again.

The arrangement of the second redirecting component and the second wavelength dispersing component causes the plurality of sub-beams to eventually converge into a bundle of WDM light for output from the corresponding output port.

Optionally, the reconfigurable optical add/drop multiplexer further includes: a first spot expanding component and a second spot expanding component, wherein the input component is specifically configured to pass the first in a wavelength expansion plane a spot beam expanding assembly outputs an input beam received by the M+P input ports to a first wavelength dispersion component; wherein the first spot expanding component is configured to receive the output component output M at a wavelength expansion plane +P input beams and changing the beam characteristics of the M+P input beams Outputting to the first wavelength dispersion component; the second wavelength dispersion component is specifically configured to output the combined beam to the output component through the second spot expanding component on a wavelength expansion plane; The second spot expanding assembly is configured to receive the combined beam of the output of the second wavelength dispersion component in a wavelength expansion plane, and change a beam characteristic of the combined beam to be output to the output component.

The first spot expanding assembly and the second spot expanding assembly may include at least one lens. For specific implementation of the lens, reference may be made to the foregoing, and details are not described herein again.

Specifically, the first spot expanding component is specifically configured to receive M+P input beams output by the input component in a wavelength expansion plane and change a spot size of the M+P input beams to increase a spot size. And outputting to the first wavelength dispersion component;

The second spot expanding assembly is configured to receive the combined beam outputted by the second wavelength dispersion component on a wavelength expansion plane, and change a spot size of the combined beam to make the spot smaller and output To the output component.

The first spot expanding component is configured to perform spot conversion on the input beam of the input component, so that the input beam can better satisfy the processing characteristics of the subsequent optical component, thereby improving the processing performance of the reconfigurable optical add/drop multiplexer. By setting the second spot expanding assembly, the beam can better satisfy the processing characteristics of the output component, thereby improving the processing performance of the reconfigurable optical add/drop multiplexer.

Optionally, the reconfigurable optical add/drop multiplexer further includes a third redirection component and/or a fourth redirection component. The first switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P input beams to the first through the third redirection component on a wavelength expansion plane. a second switching array, wherein the third redirection component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the first switch array in a wavelength expansion plane And redirecting to the second switch array;

The second switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P input beams to the third through the fourth redirection component on a wavelength expansion plane a switch array; wherein the fourth redirection component is configured to receive, in a wavelength expansion plane, the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the second switch array Directed to the third switch array.

Similar to the first redirection component, the third redirection component and the fourth redirection component may include At least one lens. Therefore, the specific implementation of the third redirection component and the fourth redirection component may be referred to the foregoing, and details are not described herein again.

Optionally, the reconfigurable optical add/drop multiplexer further includes a third spot expanding component and a fourth spot expanding component, and the input component is specifically configured to pass the third in the port switching plane. a spot beam expanding assembly outputs an input beam received by the M+P input ports to the first switch array, wherein the third spot expanding component is configured to receive from the input component at a port switching plane M+P input beams, and changing the beam characteristics of the M+P input beams, and outputting to the first switch array;

The third switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P input beams to the output through the fourth spot expanding component at a port switching plane An assembly; wherein the fourth spot expanding assembly is configured to receive, at a port switching plane, the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the third switch array and change The beam characteristics of the A sub-beams, the B sub-beams, and the sub-beams of the P beams are output to the output component.

The third spot expanding assembly and the fourth spot expanding assembly may include at least one lens. For specific implementation of the lens, reference may be made to the foregoing, and details are not described herein again.

The third spot expanding assembly is configured such that input beams of different input ports can be routed to the position of the first switch array corresponding to the input port at the port switching plane; the fourth spot expanding assembly can be configured to enable different input ports The sub-beam of the input beam is routed on the port switching plane to a position of the second switch array corresponding to the input port.

Optionally, the reconfigurable optical add/drop multiplexer further includes a fifth redirection component and/or a sixth redirection component, where the first switch array is specifically configured to be in a port switching plane A sub-beam, the B sub-beams, and the sub-beams of the P beams pass the fifth re-setting Routing the component to the second switch array; wherein the fifth redirecting component is configured to receive the A sub-beams, the B sub-beams, and the sub-P beams from the first switch array And redirecting the light beam to the second switch array;

The second switch array is specifically configured to route the A sub-beams, the B sub-beams, and the sub-beams of the P beams to the third through the sixth redirection component in a port switching plane a switch array; wherein the sixth redirecting component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the second switch array and redirect to the third Switch array.

Similar to the first redirection component, the fifth redirection component and the sixth redirection component can include at least one lens. Therefore, the specific implementation of the fifth redirection component and the sixth redirection component may be referred to the foregoing, and details are not described herein again.

The setting of the fifth redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the first switch array in the port switching plane, so that the sub-beams of the input beams of different input ports The port switching plane is routed to a location of the second switch array corresponding to the input port. Similarly, the setting of the sixth redirection component can change the beam propagation characteristics of the sub-beams of the A sub-beams, the B sub-beams, and the P input beams received from the second switch array in the port switching plane, so as to input different input ports. The sub-beam of the beam is routed at the port switching plane to a position of the third switch array corresponding to the input port.

Optionally, since the LCOS can only process the light beam of a single polarization state, the reconfigurable optical add/drop multiplexer further includes: a polarization beam splitter and a first polarization converter, and the M for outputting the input component +P input beams are converted into beams of a single polarization state and output to the first spot expanding assembly; a polarization combiner and a second polarization converter for different polarizations output by the second spot expanding assembly The beams of the state are combined and output.

Wherein, the first polarization converter and the second polarization converter may be half wave plates; the polarization beam splitter and the first polarization converter are located on a side close to the input component for converting polarized light orthogonal to each other in the light beam into A single polarization beam for subsequent optical path processing. Correspondingly, the polarization combiner and the second polarization converter are located on the side close to the output component, and the beam is inversely processed and then output.

The various components and functions in the reconfigurable optical add/drop multiplexer of the embodiment of the present invention are described above. Hereinafter, the configuration of each device in the reconfigurable optical add/drop multiplexer according to the embodiment of the present invention will be described. Or, the optical path design, for illustrative purposes.

2A through 2E illustrate one embodiment of a reconfigurable optical add/drop multiplexer in accordance with an embodiment of the present invention. 2A shows a schematic diagram of the reconfigurable optical add/drop multiplexer in the wavelength expansion plane direction (top view), and FIG. 2B shows the reconfigurable optical add/drop multiplexer in the port switching plane direction (side view) ) on the schematic. 2C shows a schematic diagram of optical paths exchanged between dimensions of a reconfigurable optical add/drop multiplexer in accordance with an embodiment of the present invention. 2D shows an optical path diagram of a wave on a reconfigurable optical add/drop multiplexer in accordance with an embodiment of the present invention. 2E is a schematic diagram showing the optical path of a wave under the reconfigurable optical add/drop multiplexer according to an embodiment of the present invention.

As shown in FIG. 2A to FIG. 2E, the first switch array can be implemented by LCOS1, the second switch array can be implemented by LCOS2, and the third switch array can be implemented by LCOS3. The first wavelength dispersion component may include a grating 1A, the second wavelength dispersion component includes a grating 1B, the first redirection component includes a lens 1A, the second redirection component may include a lens 1B, and the third redirection component includes a lens 1A and a lens 1C, the fourth redirection assembly includes a lens 1C and a lens 1B, the fifth redirection assembly includes a lens 1D, the sixth redirection assembly includes a lens 1E, and the first spot expansion assembly includes a lens 2A and a lens 3A, and the second spot is expanded. The assembly includes a lens 2B and a lens 3B, the third spot expanding assembly includes a lens 4A and a lens 5A, and the fourth spot expanding assembly includes a lens 4B and a lens 5B. In addition, an input collimator, a polarization beam splitter (PBS) and a half-wave plate are also shown at the input end, wherein the PBS is used to realize the function of polarization splitting, and the half-wave plate is used for polarization conversion. Function; correspondingly, the output also shows the output collimator, PBS and half-wave plate, PBS is used to realize the function of polarization combining, and half-wave plate is used to realize the function of polarization conversion.

As shown in FIG. 2A, on the wavelength expansion plane, the beam input from the input port of the input component is processed by the input collimator, PBS, and half-wave plate to reach the first spot expanding assembly, which is composed of lens 2A and lens 3A. After the first spot expansion device performs spot change and beam rearrangement, it is reflected by the mirror to the grating 1A (first wavelength dispersion component), and the grating 1A performs dispersion processing on each input beam to decompose each input beam into multiple The sub-beams of different wavelengths are then transmitted to the lens 1A (first redirection component); after the lens 1A changes the propagation characteristics of the sub-beams of the plurality of different wavelengths, the light beams input from the M input ports for the dimensional input are The sub-beam is redirected to the M-row switching unit of LCOS1 (first switch array), and the sub-beams of the light beam input from the P input ports for the upper wave are redirected to the P-row switching unit of LCOS1, and The sub-beams of the same wavelength are routed to the same position of LCOS1 or the sub-beams of the same wavelength are routed to the same column of switching units of LCOS1; LCOS1 then decomposes the M input beams into A sub-beams and P of all sub-beams All sub-beams to which the input beam is split are routed through a third redirection component consisting of lens 1A and lens 1C to the Z-row switching unit of LCOS2 (second switch array), and B of all sub-beams obtained by decomposing the M input beams The sub-beams are routed through the lens 1A and the lens 1C to the J-row switching unit of the LCOS 2, wherein the lens 1A and the lens 1C function to change the propagation characteristics of the respective sub-beams so that the sub-beams of the same wavelength are routed to the same position of the LCOS 2. The LCOS2 then routes the sub-beams received by the Z-row switch unit through the fourth redirection component composed of the lens 1C and the lens 1B to the N-row switch unit of the LCOS3 (third switch array), and passes the sub-beams received by the J-row switch unit through the lens. 1C and lens 1B are routed to the Q-line switching unit of LCOS3, wherein the roles of lens 1C and lens 1B are such that after changing the propagation characteristics of the respective sub-beams, the sub-beams of the same wavelength are routed to the same position of LCOS3. The LCOS 3 then finally converges the sub-beams received by the N-row switching unit through the lens 1B (the second redirection component) and the grating 1B (the second wavelength dispersion component) into a bundle of WDM light, which is then composed of the lens 2B and the lens 3B. The second spot expanding assembly performs inverse spot conversion and beam rearrangement and outputs from a corresponding output port of the output assembly.

From FIG. 2A and the above beam processing process, it can be concluded that the first spot expanding assembly composed of the lens 2A and the lens 3A and the second spot expanding assembly composed of the lens 2B and the lens 3B and the first wavelength dispersion component composed of the grating 1A The second wavelength dispersion component composed of the grating 1B, the first redirection component composed of the lens 1A, and the second redirection component composed of the lens 1B are symmetrically disposed and reciprocal.

It should be noted that only the processing process of a single input beam from one output port is shown in FIG. 2A. In practical applications, the input component includes multiple input ports, for example, the input component may include 3*5 input ports, wherein It includes 3 dimension input ports and 12 upper wave input ports. The output includes 3*5 output ports, including 3 dimension output ports and 12 down wave input ports. The processing of the input beam for each input port is the same.

It should also be noted that the lens 4A, the lens 5A, the lens 1D, the lens 1E, the lens 4B, and the lens 5B do not function in the wavelength exchange plane, and these lenses function in the port switching plane, so in FIG. 2 These components are not shown.

As shown in Figure 2B, at the port switching plane, the beam input from the input component is transmitted to the lens. A third spot expanding assembly consisting of 4A and lens 5A, the third spot expanding assembly performs spot change and beam rearrangement on the input beam and outputs to LCOS1, and LCOS1 passes the received beam through lens 1D (fifth redirection component). After the optical path is changed and routed to LCOS2, LCOS2 passes the received beam through lens 1E (sixth redirection component) for optical path transformation and then routes it to LCOS3, and LCOS3 passes the received beam through lens 5B and lens 4B to form a fourth spot expanding component. After processing, it is processed by the half-wave plate, PBS and output collimator, and then output to the output component, and output from the corresponding port of the output component.

As shown in FIG. 2C, in the port switching plane, the sub-beams of the M input beams obtained by the beam splitting from the M input ports are mapped to the first switch array. Wherein the A sub-beams are routed to the Z-row switch unit of the second switch array through the redirection component; the sub-beams corresponding to the Z-row switch unit are routed through the redirection component to the N rows of the third open-light array through the second switch array The switch unit is routed to the N output ports through the third switch array to implement optical switching between dimensions.

As shown in FIG. 2D, in the port switching plane, the beams from the M input ports are subjected to grating demultiplexing to obtain sub-beams of M input beams, which are mapped to the first switch array. Wherein the B sub-beams are routed to the J-row switch unit of the second switch array (shown as J1 row switch unit and J2 row switch unit in the figure); after the second switch array, the B sub-beams are routed to the third switch array The Q row switch unit is routed to the Q output ports through the third switch array to implement the down wave function.

As shown in FIG. 2E, in the port switching plane, the light beams from the P input ports are subjected to grating demultiplexing to obtain sub-beams of P input beams, which are mapped to the first switch array. All sub-beams are respectively routed through the redirection component to the Z-row switch unit of the second switch array; through the second switch array, the sub-beams are then routed through the redirection component to the N-row switch unit of the third switch array, after The three-switch array is routed to N output ports for down-wave functions.

It should be noted that the sub-beams of the P input beams shown in FIG. 2C to FIG. 2E are all shown by P1 sub-beams and P2 sub-beams; the J-row switching units are all shown by the J1 row switching unit and the J2 row switching unit. The Q row switching units are all shown in the Q1 row switching unit and the Q2 row switching unit.

It should be understood that the term "and/or" herein is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately. There are three cases of A and B, and B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be directed to the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on this understanding, this The technical solution of the invention, or the part contributing to the prior art, or the part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, and includes a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention. The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention.

Claims

A reconfigurable optical add/drop multiplexer, comprising:

An input component comprising M+P input ports, wherein M input ports are for dimensional input, P input ports are for upper waves, and the input component is for outputting the input beam received by the M+P input ports a first wavelength dispersion component, wherein the values of the M and P are positive integers;

a first wavelength dispersion component for receiving M input beams output by the M input ports, and dispersing the M input beams to obtain sub-beams of the M input beams; and for receiving the P input beams output by P input ports, and dispersing the P input beams to obtain sub-beams of the P input beams;

a first redirection component, configured to receive sub-beams of the M input beams output by the first wavelength dispersion component, and redirect sub-beams of the M input beams to M rows in the first switch array a switching unit; further configured to receive sub-beams of the P input beams output by the first wavelength dispersion component, and redirect sub-beams of the P input beams to P rows in the first switch array Switch unit

The first switch array includes an M+P row switch unit, each row includes K1 switch units, the K1 switch units are respectively corresponding to K1 wavelengths, and the K1 switch units are respectively used to route respective wavelengths of the sub-switches. a light beam to the second switch array; the M-row switch unit, configured to receive the sub-beams of the M input beams, and route the A sub-beams to the Z-row switch unit of the second switch array, and set the B sub-beams Routing to a J-row switch unit of the second switch array; the P-row switch unit for receiving sub-beams of the P input beams and routing sub-beams of the P input beams to the second switch a Z row switch unit of the array; wherein the values of A, B, and K1 are positive integers;

The second switch array includes a Z+J row switch unit, each row includes K2 switch units, the K2 switch units are corresponding to K2 wavelengths, and the K2 switch units are respectively used to route respective wavelengths of the sub-switches. a beam to a third switch array, the Z row switch unit for receiving the sub-beams of the A sub-beams and the P input beams, and routing to N rows of switching units of the third switch array; the J-row switch a unit for receiving the B sub-beams, and routing to the Q-switch unit of the third switch array; wherein the values of Z and J are positive integers, the K2=K1;

a third switch array comprising N+Q row switch units, each row comprising K3 switch units, The K3 switching units are respectively corresponding to K3 wavelengths, and the K3 switching units are respectively used to route respective sub-beams to an output component; the N-row switching unit is configured to receive the A sub-beams and the P The sub-beams of the input beam are routed to the N output ports of the output component; the Q-row switching unit is configured to receive the B sub-beams and route to the Q output ports of the output component; wherein the N and Q The values are all positive integers, and the K3=K2=K1;

An output component comprising N+Q output ports, the N output ports are configured to receive the sub-beams of the A sub-beams and the P input beams, and output to different dimensions, the Q output ports are used for The B sub-beams are received and the lower waves are received.
The reconfigurable optical add/drop multiplexer according to claim 1, further comprising: a second redirection component and a second wavelength dispersion component;

The third switch array is configured to sequentially route the A sub-beams, the sub-beams of the P input beams, and the B sub-beams to the second redirection component and the second wavelength dispersion component Output component

The second redirection component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the third switch array in a wavelength expansion plane, and The sub-beams of the A sub-beams, the B sub-beams, and the P input beams are redirected and output to the second wavelength dispersion component;

The second wavelength dispersion component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the second redirection component in a wavelength expansion plane and the A The sub-beams and the sub-beams of the P input beams are combined and output to the output component, and the B sub-beams are combined and output to the output component.
The reconfigurable optical add/drop multiplexer of claim 2, further comprising: a first spot expanding component and a second spot expanding component;

The input component is specifically configured to output, by the first spot expansion beam assembly, an input beam received by the M+P input ports to a first wavelength dispersion component at a wavelength expansion plane; wherein the first spot expansion a beam assembly for receiving M+P input beams output by the input component in a wavelength expansion plane and changing beam characteristics of the M+P input beams, and outputting to the first wavelength dispersion component;

The second wavelength dispersion component is specifically configured to output the combined beam to the output component through the second spot expanding assembly on a wavelength expansion plane; wherein the second spot is expanded And a component, configured to receive the combined beam of the output of the second wavelength dispersion component in a wavelength expansion plane, and change a beam characteristic of the combined beam to be output to the output component.
The reconfigurable optical add/drop multiplexer according to claim 3, wherein the first spot expanding component is specifically configured to receive M+P input beams output by the input component in a wavelength expansion plane. And changing the spot size of the M+P input beams to make the spot larger and output to the first wavelength dispersion component;

The second spot expanding assembly is configured to receive the combined beam outputted by the second wavelength dispersion component on a wavelength expansion plane, and change a spot size of the combined beam to make the spot smaller and output To the output component.
The reconfigurable optical add/drop multiplexer according to any one of claims 1 to 4, further comprising a third redirection component and/or a fourth redirection component;

The first switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P input beams to the second through the third redirection component on a wavelength expansion plane a switch array; wherein the third redirection component is configured to receive, in a wavelength expansion plane, the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the first switch array Directed to the second switch array;

The second switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P input beams to the third through the fourth redirection component on a wavelength expansion plane a switch array; wherein the fourth redirection component is configured to receive, in a wavelength expansion plane, the sub-beams of the A sub-beams, the B sub-beams, and the P input beams output by the second switch array Directed to the third switch array.
The reconfigurable optical add/drop multiplexer according to any one of claims 1 to 5, further comprising: a third spot expanding component and a fourth spot expanding component;

The input component is specifically configured to output, by the port switching plane, an input beam received by the M+P input ports to the first switch array by using the third spot expanding component, wherein the third spot a beam expander assembly for receiving M+P input beams from the input component at a port switching plane, and changing beam characteristics of the M+P input beams to be output to the first switch array;

The third switch array is specifically configured to pass the sub-beam paths of the A sub-beams, the B sub-beams, and the P input beams through the fourth spot expanding component at a port switching plane From the output assembly; wherein the fourth spot expanding assembly is configured to receive the A sub-beams, the B sub-beams, and the P beams from the third switch array at a port switching plane The sub-beams and the beam characteristics of the sub-beams of the A sub-beams, the B sub-beams and the P beams are output to the output component.
The reconfigurable optical add/drop multiplexer according to claim 6, further comprising: a fifth redirection component and/or a sixth redirection component;

The first switch array is specifically configured to route the sub-beams of the A sub-beams, the B sub-beams, and the P beams to the second through the fifth redirection component in a port switching plane a switch array; wherein the fifth redirecting component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the first switch array and redirect to the second Switch array

The second switch array is specifically configured to route the A sub-beams, the B sub-beams, and the sub-beams of the P beams to the third through the sixth redirection component in a port switching plane a switch array; wherein the sixth redirecting component is configured to receive the sub-beams of the A sub-beams, the B sub-beams, and the P beams from the second switch array and redirect to the third Switch array.
The reconfigurable optical add/drop multiplexer according to any one of claims 1 to 7, further comprising:

An input collimator array, comprising M+P collimators, corresponding to the M+P input ports, respectively, for converting the light beams input by the M+P input ports into a collimated light beam;

An output collimator array comprising N+Q collimators respectively corresponding to the N+Q output ports for converting a beam intended to be output at the N+Q output ports into a collimated beam.
The reconfigurable optical add/drop multiplexer of claim 2, wherein the first wavelength dispersion component and the second wavelength dispersion component each comprise at least one dispersion unit.
The reconfigurable optical add/drop multiplexer of claim 5 wherein the first redirection component and the second redirection component comprise at least one lens.
The reconfigurable optical add/drop multiplexer according to any one of claims 1 to 10, wherein the first switch array, the second switch array, and the third switch array are MEMS One or more of MEMS, liquid crystal on silicon LCOS or planar waveguide switch arrays.