WO2017190331A1 - 可重构光分插复用器 - Google Patents
可重构光分插复用器 Download PDFInfo
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- WO2017190331A1 WO2017190331A1 PCT/CN2016/081192 CN2016081192W WO2017190331A1 WO 2017190331 A1 WO2017190331 A1 WO 2017190331A1 CN 2016081192 W CN2016081192 W CN 2016081192W WO 2017190331 A1 WO2017190331 A1 WO 2017190331A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
Definitions
- the present invention relates to the field of optical communication technologies, and in particular, to a reconfigurable optical add/drop multiplexer.
- 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.
- a Reconfigurable Optical Add/Drop Multiplexer is generally used at the optical network node.
- an N*M ROADM 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.
- 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.
- the invention provides a reconfigurable optical add/drop multiplexer, which can achieve high integration and improve the crossover capability of an optical network node.
- 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 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;
- 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.
- 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,
- 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.
- 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.
- 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.
- 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.
- 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 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.
- 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.
- 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 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.
- 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-
- 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.
- 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.
- 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.
- 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.
- the first wavelength dispersing component and the second wavelength dispersing component each comprise at least one dispersing unit.
- the first redirection component and the second redirection component comprise at least one lens.
- 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.
- FIG. 1 is a schematic block diagram of a first reconfigurable optical add/drop multiplexer according to an embodiment of the present invention
- FIG. 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
- FIG. 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.
- 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.
- GSM Global System of Mobile Communication
- CDMA code division multiple access
- WCDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- 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;
- 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.
- 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 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.
- 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.
- M input ports are used to acquire beams of M dimensions.
- the beams of the M dimensions may be Wavelength Division Multiplex (WDM) light.
- WDM Wavelength Division Multiplex
- 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.
- 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).
- the P input ports are used to acquire a local wave of the upper wave
- 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.
- 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.
- one communication node is one dimension, or a group of communication nodes is one dimension.
- 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.
- 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.
- 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).
- 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.
- the first wavelength dispersion component may decompose the light beam input from the M+P input ports into 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.
- the wavelength dispersion component can be an arrayed waveguide grating, a reflective grating, a transmissive grating, a dispersive prism, or a planar waveguide grating.
- 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.
- 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.
- 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.
- 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.
- the first redirecting component comprises at least one lens.
- the first redirection component can include a lens, a concave mirror, or a cylindrical lens.
- 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.
- 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.
- 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.
- 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.
- the sub-beams 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.
- 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 may be determined 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.
- 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.
- 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.
- J is a positive integer.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- a switch array in an embodiment of the invention may be one of a MEMS, LCOS, or planar waveguide switch array or A variety.
- 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.
- 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.
- 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.
- the switch array can be realized by a liquid crystal on-silicon (LCOS) technology.
- LCOS liquid crystal on-silicon
- 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.
- the switch array can be realized by a liquid crystal (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.
- 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.
- DLP digital light processing
- 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.
- 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. .
- 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.
- 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.
- 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
- 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.
- 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.
- the lens For specific implementation of the lens, reference may be made to the foregoing, and details are not described herein again.
- 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.
- the beam can better satisfy the processing characteristics of the output component, thereby improving the processing performance of the reconfigurable optical add/drop multiplexer.
- 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.
- 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.
- 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.
- 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.
- 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.
- the 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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
- 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
- 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.
- 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.
- 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.
- 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.
- 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 LC
- 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.
- 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.
- 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.
- 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.
- 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).
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- 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.
- 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.
- 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 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. .
- 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.
- a computer device which may be a personal computer, server, or network device, etc.
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Abstract
一种可重构光分插复用器,涉及光通信技术领域。该可重构光分插复用器包括:输入组件(101)、第一波长色散组件(102)、第一重定向组件(103)、包括M+P行开关单元的第一开关阵列(104)、第二开关阵列(105)、第三开关阵列(106)、输出组件(107)。从输入组件(101)输入的M+P个输入光束经第一波长色散组件(102)色散后得到M个输入光束的子光束和P个输入光束的子光束,且M个子光束的部分子光束分别经过第一、第二、第三开关阵列(104,105,106)路由至N个输出端口;部分子光束分别经过第一、第二、第三开关阵列(104,105,106)路由至Q个输出端口;P个输入光束的子光束分别经过第一、第二、第三开关阵列(104,105,106)路由至N个输出端口。该可重构光分插复用器应用在光通信的过程中。
Description
本发明涉及光通信技术领域,尤其涉及可重构光分插复用器。
目前,在光通信网络中,位于多个环网相切处的光网络节点需要处理将波分复用光束交换到其他维度的维度交换业务、将从下层汇聚到本节点的光束交换到目标维度的上波业务以及将其他维度的需要与本节点通信的光束交换到本节点的下波业务等。为了能够同时处理上述业务,在光网络节点处一般采用可重构光分插复用器(Reconfigurable Optical Add/Drop Multiplexer,ROADM)。
目前,存在多种结构的ROADM,以实现光网络节点之间的交叉和连接。例如,已知一种N*M ROADM,其包括M个输入端口、N个输出端口以及两级开关阵列,其中,M个输入端口用于输入WDM光束,第一级开关阵列包括M*K(M行,K列)个开关单元,用于对WDM光束的子光束进行光路处理,使处理过的子光束传输到第二级开关阵列的开关单元上,第二级开关阵列包括N个二维排列的开关单元,用于将经过第一级开关阵列处理的子光束输出到N个输出端口。由于第二级开关阵列呈二维排列,该N*M ROADM可以实现更多的输出端口,但是受限于配置结构和光路设计,该N*M ROADM只能实现下波功能,如果需要同时实现上下波和维度间交换的功能,需要N*M RODAM与其他光学器件进行组合,从而在规模、体积和成本方面都不能满足光网络高集成度、高交叉能力以及低成本的要求。
亟需一种ROADM,即能实现高集成化,又能提高光网络节点的交叉能力。
发明内容
本发明提供一种可重构光分插复用器,以能实现高集成化,又能提高光网络节点的交叉能力。
为达到上述目的,本发明采用如下技术方案:
结合第一方面,本发明提供一种可重构光分插复用器,包括:输入组件,包括M+P个输入端口,其中M个输入端口用于维度输入,P个输入端口用于上波,所述输入组件用于将所述M+P个输入端口接收的输入光束输出至第一波长色散组件,其中,所述M和P的取值均为正整数;
第一波长色散组件,用于接收所述M个输入端口输出的M个输入光束,并将所述M个输入光束进行色散,得到所述M个输入光束的子光束;还用于接收所述P个输入端口输出的P个输入光束,并将所述P个输入光束进行色散,得到所述P个输入光束的子光束;
第一重定向组件,用于接收所述第一波长色散组件输出的所述M个输入光束的子光束,并将所述M个输入光束的子光束重定向至第一开关阵列中的M行开关单元;还用于接收所述第一波长色散组件输出的所述P个输入光束的子光束,并将所述P个输入光束的子光束重定向至所述第一开关阵列中的P行开关单元;
第一开关阵列,包括M+P行开关单元,每行包括K1个开关单元,所述K1个开关单元一一对应K1个波长,所述K1个开关单元分别用于路由各自对应的波长的子光束至第二开关阵列;所述M行开关单元,用于接收所述M个输入光束的子光束,并将其中A个子光束路由至第二开关阵列的Z行开关单元,将其中B个子光束路由至第二开关阵列的J行开关单元;所述P行开关单元,用于接收所述P个输入光束的子光束,并将所述P个输入光束的子光束路由至所述第二开关阵列的Z行开关单元;其中,所述A、B和K1的取值均为正整数;
第二开关阵列,包括Z+J行开关单元,每行包括K2个开关单元,所述K2个开关单元一一对应K2个波长,所述K2个开关单元分别用于路由各自对应的波长的子光束至第三开关阵列,所述Z行开关单元用于接收所述A个子光束和所述P个输入光束的子光束,并路由至第三开关阵列的N行开关单元;所述J行开关单元,用于接收所述B个子光束,并
路由至第三开关阵列的Q行开关单元;其中,所述Z和J的取值均为正整数,所述K2=K1;
第三开关阵列,包括N+Q行开关单元,每行包括K3个开关单元,所述K3个开关单元一一对应K3个波长,所述K3个开关单元分别用于路由各自对应的子光束至输出组件;所述N行开关单元,用于接收所述A个子光束和所述P个输入光束的子光束并路由至输出组件的N个输出端口;所述Q行开关单元,用于接收所述B个子光束并路由至输出组件的Q个输出端口;其中,所述N和Q的取值均为正整数,所述K3=K2=K1;
输出组件,包括N+Q个输出端口,所述N个输出端口用于接收所述A个子光束和所述P个输入光束的子光束,并输出至不同维度,所述Q个输出端口用于接收所述B个子光束,并下波。
本发明提供的可重构光分插复用器,通过设置输入组件、第一色散组件、第一重定向组件、第一开关阵列、第二开关阵列和第三开关阵列,能够实现将从输入组件的M个输入端口输入的M个光束的子光束中的一部分子光束(A个子光束)路由至N个输出端口,实现维度交换;一部分子光束(B个子光束)和由P个输入端口输入的用于上波的P个光束的子光束耦合路由至Q个输出端口,实现下波。且该可重构光分插复用器能够代替现有多个不同功能性的光学模块实现光分插复用功能,集成度较高。
结合第一方面,在第一方面的第一种实现方式中,所述可重构光分插复用器还包括:第二重定向组件和第二波长色散组件;所述第三开关阵列,具体用于将所述A个子光束、所述P个输入光束的子光束和所述B个子光束依次通过所述第二重定向组件和第二波长色散组件路由至所述输出组件;其中,所述第二重定向组件,用于在波长展开平面接收所述第三开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束,并将所述A个子光束、所述B个子光束和所述P个输入光束的子光束重定向后输出至所述第二波长色散组件;所述第二波长色散组件,用于在波长展开平面接收所述第二重定向组件输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并将所述A个子光束和所述P个输入光束的子光束合波后输出至所述输出组件,将所述B个子光
束合波后输出至所述输出组件。
结合第一方面的第一种实现方式,在第一方面的第二种实现方式中,所述可重构光分插复用器还包括:第一光斑扩束组件和第二光斑扩束组件;所述输入组件,具体用于在波长展开平面通过所述第一光斑扩束组件将所述M+P个输入端口接收的输入光束输出至第一波长色散组件;其中,所述第一光斑扩束组件,用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光束特性后输出至所述第一波长色散组件;所述第二波长色散组件,具体用于在波长展开平面通过所述第二光斑扩束组件将合波后的光束输出至所述输出组件;其中,所述第二光斑扩束组件,用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光束特性后输出至所述输出组件。
通过设置第一光斑扩束组件,本发明提供的可重构光分插复用器能够将输入组件输入的光束进行光斑变换,使得输入光束能够更好的满足后续光学元件的处理特性,进而提高可重构光分插复用器的处理性能。通过设置第二光斑扩束组件,其能够将光束进行光斑逆变换,使得光束能够更好的满足输出组件的处理特性,进而提高可重构光分插复用器的处理性能。
结合第一方面的第二种实现方式,在第一方面的第三种实现方式中,所述第一光斑扩束组件,具体用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光斑大小,使光斑变大后输出至所述第一波长色散组件;所述第二光斑扩束组件,具体用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光斑大小,使光斑变小后输出至所述输出组件。
结合第一方面,或者第一方面的第一种实现方式、第二种实现方式、第三种实现方式中的任意一种,在第一方面的第四种实现方式中,所述可重构光分插复用器还包括第三重定向组件和/或第四重定向组件;所述第一开关阵列,具体用于在波长展开平面通过所述第三重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第二开关阵列;其中,所述第三重定向组件,用于在波长展开平面接收所述第一开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入
光束的子光束并重定向至所述第二开关阵列;所述第二开关阵列,具体用于在波长展开平面通过所述第四重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第三开关阵列;其中,所述第四重定向组件,用于在波长展开平面接收所述第二开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并重定向至所述第三开关阵列。
第三重定向组件的设置能够改变从第一开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在波长展开平面方向的光束传播特性,使相同波长的子光束在该波长展开平面方向上路由至第二开关阵列的同一位置。同理,第四重定向组件的设置,能够改变从第二开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在波长展开平面方向的光束传播特性,使相同波长的子光束在该波长展开平面方向上路由至第三开关阵列的同一位置。
结合第一方面,或者第一方面的第一种实现方式、第二种实现方式、第三种实现方式、第四种实现方式中的任意一种,在第一方面的第五种实现方式中,所述的可重构光分插复用器还包括:第三光斑扩束组件和第四光斑扩束组件;所述输入组件,具体用于在端***换平面通过所述第三光斑扩束组件将所述M+P个输入端口接收的输入光束输出至所述第一开关阵列,其中,所述第三光斑扩束组件,用于在端***换平面,从所述输入组件接收M+P个输入光束,并改变所述M+P个输入光束的光束特性后输出至所述第一开关阵列;所述第三开关阵列,具体用于在端***换平面通过所述第四光斑扩束组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述输出组件;其中,所述第四光斑扩束组件,用于在端***换平面,从所述第三开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并改变所述A个子光束、所述B个子光束和所述P个光束的子光束的光束特性后输出至所述输出组件。
第三光斑扩束组件的设置,使得从M+P个输入端口输出的M+P个输入光束在端***换平面能够路由至第一开关阵列的分别与每个输入端口对应的位置;第四光斑扩束组件的设置,能够使得从M+P个输入端口输出的M+P个输入光束的子光束在端***换平面上路由至该第二开关阵列
中分别与输入端口对应的位置。第三光斑扩束组件和第四光斑扩束组件可以包括至少一个透镜。
结合第一方面的第五种实现方式,在第一方面的第六种实现方式中,所述的可重构光分插复用器,还包括:第五重定向组件和/或第六重定向组件;所述第一开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第五重定向组件路由至所述第二开关阵列;其中,所述第五重定向组件,用于从所述第一开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第二开关阵列;所述第二开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第六重定向组件路由至所述第三开关阵列;其中,所述第六重定向组件,用于从所述第二开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第三开关阵列。
第五重定向组件的设置能够改变从第一开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在端***换平面的光束传播特性,使不同输入端口的输入光束的子光束在端***换平面路由至第二开关阵列中与输入端口对应的位置。同理,第六重定向组件的设置,能够改变从第二开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在端***换平面的光束传播特性,使不同输入端口的输入光束的子光束在端***换平面路由至第三开关阵列中与输入端口对应的位置。
结合第一方面,或者第一方面的第一种实现方式、第二种实现方式、第三种实现方式、第四种实现方式、第五种实现方式、第六种实现方式中的任意一种,在第一方面的第七种实现方式中,所述可重构光分插复用器,还包括:输入准直器阵列,包括M+P个准直器,分别与所述M+P个输入端口对应,用于将所述M+P个输入端口输入的光束转换成准直光束;输出准直器阵列,包括N+Q个准直器,分别与所述N+Q个输出端口对应,用于将准备在所述N+Q个输出端口输出的光束转换成准直光束。
通过设置输入准直器阵列和输出准直器阵列,本发明提供的可重构光分插复用器能够将从M+P个输入端口输入的光束转换为平行光同时扩展光束束腰值,以便于进行后续的光路处理。
结合第一方面的第一种实现方式,在第一方面的第八种实现方式中,所述第一波长色散组件和第二波长色散组件均包括至少一个色散单元。
结合第一方面的第四种实现方式,在第一方面的第九种实现方式中,所述第一重定向组件、第二重定向组件包括至少一个透镜。
结合第一方面,或者第一方面的第一种实现方式、第二种实现方式、第三种实现方式、第四种实现方式、第五种实现方式、第六种实现方式、第七种实现方式、第八种实现方式、第九种实现方式中的任意一种,在第一方面的第十种实现方式中,所述第一开关阵列、所述第二开关阵列和所述第三开关阵列为微机电***MEMS、硅基液晶LCOS或平面波导开关阵列中的一种或多种。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的第一种可重构光分插复用器的示意性框图;
图2A为本发明实施例提供的可重构光分插复用器在波长展开平面方向的示意图;
图2B为本发明实施例提供的可重构光分插复用器在端***换平面方向的示意图;
图2C为利用本发明实施例提供的可重构光分插复用器实现维度间光交换的示意图;
图2D为利用本发明实施例提供的可重构光分插复用器实现下波的示意图;
图2E为利用本发明实施例提供的第一种可重构光分插复用器实现下波的示意图。
下面将结合本实施例中的附图,对本实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明的技术方案,可以应用于各种能够使用光束(或者说,信号光)来传输数据的通信***,例如:全球移动通讯***(GSM,Global System of Mobile communication),码分多址(CDMA,Code Division Multiple Access)***,宽带码分多址(WCDMA,Wideband Code Division Multiple Access Wireless),通用分组无线业务(GPRS,General Packet Radio Service),长期演进(LTE,Long Term Evolution)等。
如图1所示,本发明实施例提供一种可重构光分插复用器,包括:输入组件101,包括M+P个输入端口,其中M个输入端口用于维度输入,P个输入端口用于上波,所述输入组件用于将所述M+P个输入端口接收的输入光束输出至第一波长色散组件,其中,所述M和P的取值均为正整数。
第一波长色散组件102,用于接收所述M个输入端口输出的M个输入光束,并将所述M个输入光束进行色散,得到所述M个输入光束的子光束;还用于接收所述P个输入端口输出的P个输入光束,并将所述P个输入光束进行色散,得到所述P个输入光束的子光束。
第一重定向组件103,用于接收所述第一波长色散组件102输出的所述M个输入光束的子光束,并将所述M个输入光束的子光束重定向至第一开关阵列中的M行开关单元;还用于接收所述第一波长色散组件102输出的所述P个输入光束的子光束,并将所述P个输入光束的子光束重定向至所述第一开关阵列中的P行开关单元。
第一开关阵列104,包括M+P行开关单元,每行包括K1个开关单元,所述K1个开关单元一一对应K1个波长,所述K1个开关单元分别用于路由各自对应的波长的子光束至第二开关阵列;所述M行开关单元,用于接收所述M个输入光束的子光束,并将其中A个子光束路由至第二开关阵列的Z行开关单元,将其中B个子光束路由至第二开关阵列的J行
开关单元;所述P行开关单元,用于接收所述P个输入光束的子光束,并将所述P个输入光束的子光束路由至所述第二开关阵列的Z行开关单元;其中,所述A、B和K1的取值均为正整数。
第二开关阵列105,包括Z+J行开关单元,每行包括K2个开关单元,所述K2个开关单元一一对应K2个波长,所述K2个开关单元分别用于路由各自对应的波长的子光束至第三开关阵列,所述Z行开关单元用于接收所述A个子光束和所述P个输入光束的子光束,并路由至第三开关阵列的N行开关单元;所述J行开关单元,用于接收所述B个子光束,并路由至第三开关阵列的Q行开关单元;其中,所述Z和J的取值均为正整数,所述K2=K1。
第三开关阵列106,包括N+Q行开关单元,每行包括K3个开关单元,所述K3个开关单元一一对应K3个波长,所述K3个开关单元分别用于路由各自对应的子光束至输出组件;所述N行开关单元,用于接收所述A个子光束和所述P个输入光束的子光束并路由至输出组件的N个输出端口;所述Q行开关单元,用于接收所述B个子光束并路由至输出组件的Q个输出端口;其中,所述N和Q的取值均为正整数,所述K3=K2=K1。
输出组件107,包括N+Q个输出端口,所述N个输出端口用于接收所述A个子光束和所述P个输入光束的子光束,并输出至不同维度,所述Q个输出端口用于接收所述B个子光束,并下波。
本发明提供的可重构光分插复用器,通过设置输入组件、第一色散组件、第一重定向组件、第一开关阵列、第二开关阵列和第三开关阵列,能够实现将从输入组件的M个输入端口输入的M个光束的子光束中的一部分子光束(A个子光束)路由至N个输出端口,实现维度交换;一部分子光束(B个子光束)和由P个输入端口输入的用于上波的P个光束的子光束耦合路由至Q个输出端口,实现下波。且该可重构光分插复用器能够代替现有多个不同功能性的光学模块实现光分插复用功能,集成度较高。
下文将对可重构光分插复用器的各器件的功能和结构进行说明。
A1.输入组件
在本发明实施例中,输入组件包括M+P个输入端口。输入端口可以
呈一维排列,也可以呈二维排布。其中,M个输入端口用于获取M个维度的光束。该M个维度的光束可以为波分复用(Wavelength Division Multiplex,WDM)光。一束WDM光束可以包括多束(至少两束)子光束,各子光束的中心波长(或者说,各子光束的中心频点)彼此相异。其中,该M个维度的光束可以是来自不同的外地通信节点(例如,通信链路中的上一跳通信节点)的光束。另外,上述P个输入端口用于获取本地上波的光束,该上行光束可以是单波长的光束,也可以是WDM光。该上行光束可以是发给外地通信节点的光束,也可以是发给本地通信节点的光束,本发明并未特别限定。
另外,上述维度可以指其来源在预设规则下的类别数量(或者说,该可重构光分插复用器所连接的光纤的数量),该预设规则可以是以区域划分,例如,以城市级别、省份级别或国家级别划分;也可以是以实体划分,例如,一个通信节点即为一个维度,或者,一组通信节点即为一个维度。
应理解,以上列举的维度划分方式仅为示例性说明,本发明并未特别限定于此,其他能够区分各通信节点的划分方法均落入本发明的保护范围内。
可选地,在本发明实施例中,可重构光分插复用器还可以包括输入光纤阵列和输入准直器阵列。
输入光纤阵列可以包括一维排列或二维排列的M+P个输入光纤,其中M个输入光纤用于获取来自各维度的光束,剩余P个光纤用于获取上波的光束。
输入准直器阵列可以包括一维排列或二维排列的的M+P个准直器,分别与该M+P个输入端口对应,用于将该M+P个输入端口输入的光束转换成准直光束。其中,该M+P个准直器与M+P个输入光纤一一对应,一个准直器用于对从所对应的输入光纤输出的光束进行准直,也可以理解为将输入光纤输入的光束转换成平行光,同时扩展光束束腰值,以便于进行后续的光路处理。
A2.第一波长色散组件
在本发明实施例中,波长色散组件可以利用衍射方式,在子波长交换平面(或者说,俯视平面)将光束分解成波长(或者说,中心频点)相异
的各子光束,从而,从波长色散组件输出的各子光束在波长展开平面方向上辐射式分散。
在本发明实施例中,第一波长色散组件可以将从M+P个输入端口输入的光束分解为不同波长的子光束。
例如:每个输入光束中包括K个不同波长的子光束复合而成,则第一波长色散组件可以将从M+P个输入光束分解为(M+P)*K个子光束。
第一波长色散组件包括至少一个色散单元,如光栅等。例如,该波长色散组件可以为阵列波导光栅、反射光栅、透射光栅、色散棱镜或平面波导光栅。并且,为增加色散效应,可采用多片光栅组合,或者,可以采用调整光路使光束多次经过同一光栅。
A3.第一重定向组件
第一重定向组件可以通过改变各子光束的光束传播路线,在波长展开平面将各子光束路由至第一开关阵列中的同一位置。在本发明实施例中,第一重定向组件可以从第一波长色散组件接收上述M+P个输入光束的子光束并改变该M+P个输入光束的子光束在波长展开平面方向的光束传播特性,使相同波长的子光束在该波长展开平面方向上路由至该一开关阵列的同一位置。具体的,该第一重定向组件可以将从上述M个输入端口接收的M个输入光束的子光束分别路由至第一开关阵列的M行开关单元中与子光束的波长对应的开关单元,将从上述P个输入端口接收的P个输入光束的子光束路由至第一开关阵列的P行开关单元中与子光束的波长对应的开关单元。
可选地,该第一重定向组件包括至少一个透镜。例如,第一重定向组件可以包括透镜、凹面镜或者柱透镜。并且,根据所选择的作为第一重定向组件的器件的差异,可重构光分插复用器的各器件的配置位置相异,或者说,光束在可重构光分插复用器中的传输路径相异。
A3.第一开关阵列
在本发明实施例中,第一开关阵列可以包括至少M+P行呈一维排布或二维排布的开关单元,每行开关单元包括K1个开关单元,每个开关单元用于路由各自对应的波长的子光束。K1可以是M+P个输入端口输入的波分复用信号的最大子波长数。可选地,该第一开关阵列中的该M+P行
开关单元中的每行开关单元中的每个开关单元用于从传输至该每个开关单元的多个子光束中确定一束目标子光束,并将该目标子光束路由至该每行开关单元对应的输出端口。
其中,用于维度输入的M个输入端口中的每个输入端口分别与该第一开关阵列中的M行开关单元中的每行开关单元一一对应;该M行开关单元用于对M个维度输入的光束的子光束进行路由,使该M个维度输入的光束的部分子光束(A个子光束)传输至第二开关阵列的Z行开关单元以便于经后续处理后实现维度交换;使部分子光束(B个子光束)传输至第二开关阵列的J行开关单元以便于经后续处理后实现下波。具体的,在对M个输入光束的子光束进行路由时,可以先对子光束进行预处理,舍弃部分子光束,再将剩余的子光束分为两部分,分别传输至第二开关阵列的Z行开关单元和J行开关单元。
用于上波的P个输入端口中的每个输入端口分别与该第一开关阵列中的P行开关单元中的每行开关单元一一对应,从每个输入端口输入的光束的每个子光束分别与对应行的K个开关单元一一对应;该P行开关单元用于对P个上波的光束进行路由,使该P个上波的光束可以传输至第二开关阵列的Z行开关单元以经后续处理后实现维度交换。
A4.第二开关阵列
在本发明实施例中,第二开关阵列可以包括Z+J行呈一维排布或二维排布的开关单元,每行开关单元包括K2个开关单元,每个开关单元用于路由各自对应的波长的子光束。可选地,该第二开关阵列中的该Z+J行开关单元中的每行开关单元中的每个开关单元用于从传输至该每个开关单元的多个子光束中确定一束目标子光束,并将该目标子光束路由至该每行开关单元对应的输出端口。
其中,Z的取值可以小于或等于N;也即,该第二开关阵列中的Z行开关单元可以与N个用于维度输出的输出端口一一对应,也即一行开关单元对应一个输出端口;也可以是一行开关单元对应多个输出端口。该Z行开关单元可以用于处理维度间交换的光束,该第二开关阵列中的Z行开关单元还可以用于处理本地上波的光束。如上文所述,该Z行开关单元除了接收来自于M个光束的部分子光束之外,还用于接收来自于P个
输入端口的本地上波的光束。换而言之,该Z行开关单元中的每个开关单元都可以接收来自于M个维度的光束的部分子光束(A个子光束)以及来自于上波端口的P个光束的子光束。该Z行开关单元中的每个开关单元可以从多个子光束中确定一束目标子光束,每行开关单元中的多个开关单元确定的多个目标子光束的组合即是该每行开关单元对应的维度输出端口的输出光束。
其中,J为正整数。具体地,当J小于M时,该第二开关阵列中的该J行开关单元中的每行开关单元用于路由从各输入端口输入的维度光束的子光束,此时,具有波长阻塞特性,即同一波长的子光束在下波时不能同时从任意的下波输出端口输出。J越小,波长阻塞特性越严重。可以理解为,该J行开关单元可以将M个光束经色散后得到的所有子光束中的部分子光束(B个子光束)分别路由至第三开关阵列的Q个开关单元。当J=M时,不具有波长阻塞特性,即同一波长的子光束在下波时可以同时从任意的下波输出端口输出。
当J=M时,该第二开关阵列中的该J行开关单元中的每行开关单元用于路由与该每行开关单元对应的输入端口的输入光束的子光束,该J行开关单元中的每行开关单元中的每个开关单元用于将传输至该每个开关单元的第一子光束路由至该第一子光束对应的输出端口;具体而言,该第二开关阵列中的J行开关单元可以与M个用于维度输入的输入端口一一对应,该J行开关单元可以用于处理本地下波的光束。可以理解为,该J行开关单元与M个用于维度输入的输入端口一一对应,从而该J行开关单元与M个光束也一一对应,也就是说M个光束的所有子光束均可以路由至J行开关单元,也即前文所述的A的取值为0,而B的取值为所有子光束的值。该J行开关单元中的每个开关单元对接收到的第一子光束进行路由,使第一子光束通过第三开关阵列传输至该第一子光束对应的下波输出端口。从而完成从各维度输入的子光束到本地下波的调度过程。
应理解,该J行开关单元路由该M个维度的子光束的具体规则可以依据上层配置或远程配置进行,也可以根据其他规则进行,本发明实施例对此不作限定。
需要说明的是,在本发明实施例中,第二开关阵列的Z+J行开关单元
分别对应M个维度输入端口与N个维度输出端口,而与P个上波端口以及Q个下波端口的个数无关。所以,本发明实施例中的上波端口和下波端口的个数不受第二开关阵列的规模的限制,从而本发明实施例中的上波端口和下波端口的个数可以做到更大的规模。
A5、第三开关阵列
在本发明实施例中,该第三开关阵列可以包括一维排布或二维排布的N+Q行开关单元,每行开关单元包括K3个开关单元,所述K3个开关单元一一对应K3个波长。其中,N行开关单元分别与N个用于维度输出的输出端口一一对应;Q行开关单元分别与Q个用于下波的输出端口一一对应。如上文所述,所述N行开关单元,用于从第二开关阵列的Z行开关单元接收M个输入光束的部分子光束(A个子光束)和P个输入光束的子光束并路由至输出组件的N个输出端口以实现维度交换;所述Q行开关单元,用于从第二开关阵列的J行开关单元接收M个输入光束的部分子光束(B个子光束)并路由至输出组件的Q个输出端口以实现下波。
作为示例而非限定,本发明实施例中的开关阵列(例如,第一开关阵列、第二开关阵列或第三开关阵列)可以为微机电***MEMS、LCOS或平面波导开关阵列中的一种或多种。
例如,在本发明实施例中,开关阵列可以通过微电子机械***(MEMS,Micro-Electro-Mechanical System)技术实现,MEMS技术是将几何尺寸或操作尺寸仅在微米、亚微米甚至纳米量级的微机电装置与控制电路高度集成在硅基或非硅基材料上的一个非常小的空间里,构成一个机电一体化的器件或***。通过MEMS技术实现的开关阵列是通过静电力或其他控制力使微反射镜产生机械运动,从而使打在微反射镜上的光束偏转至任意一个方向。在通过MEMS技术实现本发明的开关阵列的情况下,控制器可以通过控制指令控制微机械结构,以驱动光调制器(微透镜)转动,从而实现光路的偏转,从而实现光束的维度(或者说,传输路径)切换。
再例如,在本发明实施例中,开关阵列可以通过硅基液晶(LCOS,Liquid Crystal On Silicon)技术实现,LCOS技术是利用液晶光栅原理,调整不同波长的光反射角度来达到分离光的目的。由于没有活动部件,
LCOS技术具有相当高的可靠性。LCOS技术采用液晶单元折射率变化控制实现反射角变化,可以方便的实现扩展和升级。不同通道对应空间光调制器(液晶)阵列的不同区域,通过调节光斑的相位,来改变光的传输方向,达到切换不同端口及调节衰减的目的。
再例如,在本发明实施例中,开关阵列可以通过液晶(LC,liquid crystal)技术实现,在通过LC技术实现的开关阵列中,入射的光束经过双折射晶体后,分成两个偏振态,其中一路经过半波片后,两路光的偏振态相同,然后打在开关阵列(液晶模组)上,通过调节双折射晶体的电压改变液晶的排列结构(改变晶体内部分子的角度),从而使晶体折射率发生变化,光源以不同角度的光输出。光经过每层液晶都有两个方向可以选择,经过多层液晶层后可以有多个光路可供选择。
再例如,在本发明实施例中,开关阵列可以通过数字光处理(DLP,Digital Light Processing)技术实现,通过DLP技术实现的开关阵列的内部结构与通过MEMS技术实现的光调制器的内部结构相似,通过微透镜的偏转实现光能量的切换。区别在于,DLP微镜转动角度只有几个状态限制输出端口数量。
A6.输出组件
在本发明实施例中,输出组件可以包括N个用于维度输出的维度输出端口以及Q个用于下波输出的下波输出端口。并且,该N个维度输出端口用于发送N个维度的光束,该光束可以是需要发送至外地通信节点(例如,通信链路中的下一跳通信节点)。该Q个下波输出端口用于输出本地下波的光束。
这里,所谓“下波”,是指光网络节点中需要发送至本地节点的下行光束,该下行光束可以是来自外地通信节点的光束中的子光束,即来自于各个维度的光束中的子光束。
可选地,在本发明实施例中,可重构光分插复用器还可以包括输出光纤阵列和输出准直器阵列。
输出光纤阵列可以包括一维排列或二维排列的N+Q个输出光纤,其中N个输出光纤用于发送各维度的输出光束,剩余Q个输出光纤用于发送各下波光束。
输出准直器阵列可以包括一维排列或二维排列的的N+Q个准直器,分别与该N+Q个输出端口对应,用于将准备在该N+Q个输出端口输出的光束转换成准直光束。其中,该N+Q个准直器中的N个准直器与N个输出光纤一一对应,一个准直器用于对从所对应的输出光纤输出的光束进行准直,也可以理解为将输出光纤输出的光束转换成准直光束,以便于向输出端口输出光束。该N+Q个准直器中的Q个准直器,分别与上述Q个用于下波的端口对应,将准备在该Q个输出端口输出的光束转换成准直光束。
可选的,可重构光分插复用器还包括:第二重定向组件和第二波长色散组件,则所述第三开关阵列,具体用于将所述A个子光束、所述P个输入光束的子光束和所述B个子光束依次通过所述第二重定向组件和第二波长色散组件路由至所述输出组件;其中,所述第二重定向组件,用于在波长展开平面接收所述第三开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束,并将所述A个子光束、所述B个子光束和所述P个输入光束的子光束重定向后输出至所述第二波长色散组件;所述第二波长色散组件,用于在波长展开平面接收所述第二重定向组件输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并将所述A个子光束和所述P个输入光束的子光束合波后输出至所述输出组件,将所述B个子光束合波后输出至所述输出组件。
与第一重定向组件类似,第二重定向组件可以包括至少一个透镜;与第一波长色散组件类似,第二波长色散组件可以包括至少一个色散单元。因此,第一重定向组件和第一波长色散组件的具体实现可参考前文所述,此处不再赘述。
第二重定向组件和第二波长色散组件的布置使得多个子光束最终汇聚成一束WDM光,从对应的输出端口输出。
可选的,所述可重构光分插复用器还包括:第一光斑扩束组件和第二光斑扩束组件,则所述输入组件,具体用于在波长展开平面通过所述第一光斑扩束组件将所述M+P个输入端口接收的输入光束输出至第一波长色散组件;其中,所述第一光斑扩束组件,用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光束特性后
输出至所述第一波长色散组件;所述第二波长色散组件,具体用于在波长展开平面通过所述第二光斑扩束组件将合波后的光束输出至所述输出组件;其中,所述第二光斑扩束组件,用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光束特性后输出至所述输出组件。
第一光斑扩束组件和第二光斑扩束组件可以包括至少一个透镜,透镜的具体实现可参考前文所述,此处不再赘述。
具体的,所述第一光斑扩束组件,具体用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光斑大小,使光斑变大后输出至所述第一波长色散组件;
所述第二光斑扩束组件,具体用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光斑大小,使光斑变小后输出至所述输出组件。
第一光斑扩束组件的设置,能够将输入组件输入的光束进行光斑变换,使得输入光束能够更好的满足后续光学元件的处理特性,进而提高可重构光分插复用器的处理性能。通过设置第二光斑扩束组件,使得光束能够更好的满足输出组件的处理特性,进而提高可重构光分插复用器的处理性能。
可选的,所述可重构光分插复用器还包括第三重定向组件和/或第四重定向组件。则所述第一开关阵列,具体用于在波长展开平面通过所述第三重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第二开关阵列;其中,所述第三重定向组件,用于在波长展开平面接收所述第一开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并重定向至所述第二开关阵列;
所述第二开关阵列,具体用于在波长展开平面通过所述第四重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第三开关阵列;其中,所述第四重定向组件,用于在波长展开平面接收所述第二开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并重定向至所述第三开关阵列。
与第一重定向组件类似,第三重定向组件和第四重定向组件可以包括
至少一个透镜。因此,第三重定向组件和第四重定向组件的具体实现可参考前文所述,此处不再赘述。
第三重定向组件的设置能够改变从第一开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在波长展开平面方向的光束传播特性,使相同波长的子光束在该波长展开平面方向上路由至第二开关阵列的同一位置。同理,第四重定向组件的设置,能够改变从第二开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在波长展开平面方向的光束传播特性,使相同波长的子光束在该波长展开平面方向上路由至第三开关阵列的同一位置。
可选的,所述可重构光分插复用器,还包括第三光斑扩束组件和第四光斑扩束组件,则所述输入组件,具体用于在端***换平面通过所述第三光斑扩束组件将所述M+P个输入端口接收的输入光束输出至所述第一开关阵列,其中,所述第三光斑扩束组件,用于在端***换平面,从所述输入组件接收M+P个输入光束,并改变所述M+P个输入光束的光束特性后输出至所述第一开关阵列;
所述第三开关阵列,具体用于在端***换平面通过所述第四光斑扩束组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述输出组件;其中,所述第四光斑扩束组件,用于在端***换平面,从所述第三开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并改变所述A个子光束、所述B个子光束和所述P个光束的子光束的光束特性后输出至所述输出组件。
第三光斑扩束组件和第四光斑扩束组件可以包括至少一个透镜,透镜的具体实现可参考前文所述,此处不再赘述。
第三光斑扩束组件的设置,使得不同输入端口的输入光束在端***换平面能够路由至第一开关阵列中与输入端口对应的位置;第四光斑扩束组件的设置,能够使得不同输入端口的输入光束的子光束在端***换平面上路由至该第二开关阵列的与输入端口对应的位置。
可选的,所述可重构光分插复用器,还包括第五重定向组件和/或第六重定向组件,所述第一开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第五重定
向组件路由至所述第二开关阵列;其中,所述第五重定向组件,用于从所述第一开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第二开关阵列;
所述第二开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第六重定向组件路由至所述第三开关阵列;其中,所述第六重定向组件,用于从所述第二开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第三开关阵列。
与第一重定向组件类似,第五重定向组件和第六重定向组件可以包括至少一个透镜。因此,第五重定向组件和第六重定向组件的具体实现可参考前文所述,此处不再赘述。
第五重定向组件的设置能够改变从第一开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在端***换平面的光束传播特性,使不同输入端口的输入光束的子光束在端***换平面路由至第二开关阵列的与输入端口对应的位置。同理,第六重定向组件的设置,能够改变从第二开关阵列接收的A个子光束、B个子光束和P个输入光束的子光束在端***换平面的光束传播特性,使不同输入端口的输入光束的子光束在该端***换平面路由至第三开关阵列的与输入端口对应的位置。
可选的,由于LCOS只能处理单一偏振态的光束,所述可重构光分插复用器还包括:偏振分束器和第一偏振转换器,用于将所述输入组件输出的M+P个输入光束转换成单一偏振态的光束后输出至所述第一光斑扩束组件;偏振合束器和第二偏振转换器,用于将所述第二光斑扩束组件输出的不同偏振态的光束合束后输出。
其中,第一偏振转换器和第二偏振转换器可以为半波片;偏振分束器和第一偏振转换器位于靠近输入组件的一侧,用于将光束中相互正交的偏振光转换成单一偏振态的光束,以便于后续光路处理。对应的,偏振合束器和第二偏振转换器位于靠近输出组件的一侧,对光束进行逆处理后再输出。
上文阐述了本发明实施例的可重构光分插复用器中的各组成器件以及功能,下文将对本发明实施例的可重构光分插复用器中各器件的配置,
或者说,光路设计,进行示例性说明。
图2A至图2E示出了根据本发明实施例的可重构光分插复用器的一个具体实施例。其中,图2A示出了可重构光分插复用器在波长展开平面方向(俯视图)上的示意图,图2B示出了可重构光分插复用器在端***换平面方向(侧视图)上的示意图。图2C示出了根据本发明实施例的可重构光分插复用器维度间交换的光路示意图。图2D示出了根据本发明实施例的可重构光分插复用器上波的光路示意图。图2E示出了根据本发明实施例的可重构光分插复用器下波的光路示意图。
如图2A至图2E所示,上述第一开关阵列可以利用LCOS1实现,上述第二开关阵列可以利用LCOS2实现,上述第三开关阵列可以利用LCOS3实现。上述第一波长色散组件可以包括光栅1A,上述第二波长色散组件包括光栅1B,第一重定向组件包括透镜1A,第二重定向组件可以包括透镜1B,第三重定向组件包括透镜1A和透镜1C,第四重定向组件包括透镜1C和透镜1B,第五重定向组件包括透镜1D,第六重定向组件包括透镜1E,第一光斑扩束组件包括透镜2A和透镜3A,第二光斑扩束组件包括透镜2B和透镜3B,第三光斑扩束组件包括透镜4A和透镜5A,第四光斑扩束组件包括透镜4B和透镜5B。另外,在输入端还示出了输入准直器、偏振分光棱镜(polarization beam splitter,PBS)和半波片,其中,PBS用于实现偏振分束的功能,半波片用于实现偏振转换的功能;相应的,输出端还示出了输出准直器、PBS和半波片,PBS用于实现偏振合束的功能,半波片用于实现偏振转换的功能。
如图2A所示,在波长展开平面上,从输入组件的输入端口输入的光束经过输入准直器、PBS和半波片的处理后到达第一光斑扩束组件,由透镜2A和透镜3A组成的第一光斑扩束组件进行光斑变换和光束重排后,通过反射镜反射至光栅1A(第一波长色散组件),光栅1A对每个输入光束进行色散处理,将每个输入光束分解为多个不同波长的子光束后传输至透镜1A(第一重定向组件);透镜1A改变该多个不同波长的子光束的传播特性后,使得从用于维度输入的M个输入端口输入的光束的子光束重定向至LCOS1(第一开关阵列)的M行开关单元,从用于上波的P个输入端口输入的光束的子光束重定向至LCOS1的P行开关单元,并使
得相同波长的子光束路由到LCOS1的相同位置或者说使得相同波长的子光束路由到LCOS1的同一列开关单元;LCOS1再将M个输入光束分解得到的所有子光束中的A个子光束和P个输入光束分解到的所有子光束通过透镜1A和透镜1C组成的第三重定向组件路由至LCOS2(第二开关阵列)的Z行开关单元,将M个输入光束分解得到的所有子光束中的B个子光束通过透镜1A和透镜1C路由至LCOS2的J行开关单元,其中,透镜1A和透镜1C的作用为改变各个子光束的传播特性后,使得相同波长的子光束路由至LCOS2的相同位置。LCOS2再将Z行开关单元接收的子光束通过透镜1C和透镜1B组成的第四重定向组件路由至LCOS3(第三开关阵列)的N行开关单元,将J行开关单元接收的子光束通过透镜1C和透镜1B路由至LCOS3的Q行开关单元,其中,透镜1C和透镜1B的作用为改变各个子光束的传播特性后,使得相同波长的子光束路由至LCOS3的相同位置。LCOS3再将N行开关单元接收的子光束通过透镜1B(第二重定向组件)以及光栅1B(第二波长色散组件)最终汇聚成一束WDM光,该WDM光再通过透镜2B和透镜3B组成的第二光斑扩束组件进行光斑逆变换和光束重排后从输出组件的相应的输出端口输出。
由图2A以及上述光束处理过程,可以得出,透镜2A和透镜3A组成的第一光斑扩束组件和透镜2B和透镜3B组成的第二光斑扩束组件、光栅1A组成的第一波长色散组件和光栅1B组成的第二波长色散组件、透镜1A组成的第一重定向组件和透镜1B组成的第二重定向组件对称设置且作用互逆。
需要说明的是,图2A中仅示出了来自一个输出端口的单个输入光束的处理过程,实际应用中,输入组件包括多个输入端口,例如:输入组件可以包括3*5个输入端口,其中包括3个维度输入端口以及12个上波输入端口,输出端包括3*5个输出端口,其中包括3个维度输出端口以及12个下波输入端口。对每个输入端口的输入光束的处理过程相同。
还需要说明的是,透镜4A、透镜5A、透镜1D、透镜1E、透镜4B、透镜5B,在波长交换平面,这些透镜均不起作用,这些透镜在端***换平面才发挥作用,因此图2中未示出这些组件。
如图2B所示,在端***换平面,从输入组件输入的光束传输至透镜
4A和透镜5A组成的第三光斑扩束组件,第三光斑扩束组件对输入光束进行光斑变换和光束重排后输出至LCOS1,LCOS1将接收的光束通过透镜1D(第五重定向组件)进行光路变换后路由至LCOS2,LCOS2将接收的光束通过透镜1E(第六重定向组件)进行光路变换后路由至LCOS3,LCOS3再将接收的光束通过透镜5B和透镜4B组成的第四光斑扩束组件处理后再经过半波片、PBS和输出准直器的处理后输出至输出组件,并从输出组件的相应端口输出。
如图2C所示,在端***换平面内,来自于M个输入端口的光束经过光栅分波后得到的M个输入光束的子光束,映射至第一开关阵列处。其中A个子光束通过重定向组件被路由至第二开关阵列的Z行开关单元;经过第二开关阵列该Z行开关单元所对应的子光束通过重定向组件被路由至第三开光阵列的N行开关单元,经过第三开关阵列路由至N个输出端口,实现维度间光交换功能。
如图2D所示,在端***换平面内,来自于M个输入端口的光束经过光栅分波后得到M个输入光束的子光束,映射至第一开关阵列处。其中B个子光束被路由至第二开关阵列的J行开关单元(图中以J1行开关单元和J2行开关单元示出);经过第二开关阵列,该B个子光束被路由至第三开关阵列的Q行开关单元,经过第三开关阵列路由至Q个输出端口,实现下波功能。
如图2E所示,在端***换平面内,来自于P个输入端口的光束经过光栅分波后得到P个输入光束的子光束,映射至第一开关阵列处。所有子光束通过重定向组件被分别路由至第二开关阵列的Z行开关单元;经过第二开关阵列,该子光束再通过重定向组件被路由至第三开关阵列的N行开关单元,经过第三开关阵列路由至N个输出端口,实现下波功能。
需要说明的是,图2C到图2E中示出的P个输入光束的子光束均以P1个子光束和P2个子光束示出;J行开关单元均以J1行开关单元和J2行开关单元示出;Q行开关单元均以Q1行开关单元和Q2行开关单元示出。
应理解,本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,
同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
应理解,在本发明的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的***、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的***、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个***,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本
发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。
通过以上的实施方式的描述,所属领域的技术人员可以清楚地了解到本发明可借助软件加必需的通用硬件的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在可读取的存储介质中,如计算机的软盘,硬盘或光盘等,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述的方法。以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。
Claims (11)
- 一种可重构光分插复用器,其特征在于,包括:输入组件,包括M+P个输入端口,其中M个输入端口用于维度输入,P个输入端口用于上波,所述输入组件用于将所述M+P个输入端口接收的输入光束输出至第一波长色散组件,其中,所述M和P的取值均为正整数;第一波长色散组件,用于接收所述M个输入端口输出的M个输入光束,并将所述M个输入光束进行色散,得到所述M个输入光束的子光束;还用于接收所述P个输入端口输出的P个输入光束,并将所述P个输入光束进行色散,得到所述P个输入光束的子光束;第一重定向组件,用于接收所述第一波长色散组件输出的所述M个输入光束的子光束,并将所述M个输入光束的子光束重定向至第一开关阵列中的M行开关单元;还用于接收所述第一波长色散组件输出的所述P个输入光束的子光束,并将所述P个输入光束的子光束重定向至所述第一开关阵列中的P行开关单元;第一开关阵列,包括M+P行开关单元,每行包括K1个开关单元,所述K1个开关单元一一对应K1个波长,所述K1个开关单元分别用于路由各自对应的波长的子光束至第二开关阵列;所述M行开关单元,用于接收所述M个输入光束的子光束,并将其中A个子光束路由至第二开关阵列的Z行开关单元,将其中B个子光束路由至第二开关阵列的J行开关单元;所述P行开关单元,用于接收所述P个输入光束的子光束,并将所述P个输入光束的子光束路由至所述第二开关阵列的Z行开关单元;其中,所述A、B和K1的取值均为正整数;第二开关阵列,包括Z+J行开关单元,每行包括K2个开关单元,所述K2个开关单元一一对应K2个波长,所述K2个开关单元分别用于路由各自对应的波长的子光束至第三开关阵列,所述Z行开关单元用于接收所述A个子光束和所述P个输入光束的子光束,并路由至第三开关阵列的N行开关单元;所述J行开关单元,用于接收所述B个子光束,并路由至第三开关阵列的Q行开关单元;其中,所述Z和J的取值均为正整数,所述K2=K1;第三开关阵列,包括N+Q行开关单元,每行包括K3个开关单元,所 述K3个开关单元一一对应K3个波长,所述K3个开关单元分别用于路由各自对应的子光束至输出组件;所述N行开关单元,用于接收所述A个子光束和所述P个输入光束的子光束并路由至输出组件的N个输出端口;所述Q行开关单元,用于接收所述B个子光束并路由至输出组件的Q个输出端口;其中,所述N和Q的取值均为正整数,所述K3=K2=K1;输出组件,包括N+Q个输出端口,所述N个输出端口用于接收所述A个子光束和所述P个输入光束的子光束,并输出至不同维度,所述Q个输出端口用于接收所述B个子光束,并下波。
- 根据权利要求1所述的可重构光分插复用器,其特征在于,还包括:第二重定向组件和第二波长色散组件;所述第三开关阵列,具体用于将所述A个子光束、所述P个输入光束的子光束和所述B个子光束依次通过所述第二重定向组件和第二波长色散组件路由至所述输出组件;其中,所述第二重定向组件,用于在波长展开平面接收所述第三开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束,并将所述A个子光束、所述B个子光束和所述P个输入光束的子光束重定向后输出至所述第二波长色散组件;所述第二波长色散组件,用于在波长展开平面接收所述第二重定向组件输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并将所述A个子光束和所述P个输入光束的子光束合波后输出至所述输出组件,将所述B个子光束合波后输出至所述输出组件。
- 根据权利要求2所述的可重构光分插复用器,其特征在于,还包括:第一光斑扩束组件和第二光斑扩束组件;所述输入组件,具体用于在波长展开平面通过所述第一光斑扩束组件将所述M+P个输入端口接收的输入光束输出至第一波长色散组件;其中,所述第一光斑扩束组件,用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光束特性后输出至所述第一波长色散组件;所述第二波长色散组件,具体用于在波长展开平面通过所述第二光斑扩束组件将合波后的光束输出至所述输出组件;其中,所述第二光斑扩束 组件,用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光束特性后输出至所述输出组件。
- 根据权利要求3所述的可重构光分插复用器,其特征在于,所述第一光斑扩束组件,具体用于在波长展开平面接收所述输入组件输出的M+P个输入光束并改变所述M+P个输入光束的光斑大小,使光斑变大后输出至所述第一波长色散组件;所述第二光斑扩束组件,具体用于在波长展开平面接收所述第二波长色散组件输出的合波后的光束,并改变所述合波后光束的光斑大小,使光斑变小后输出至所述输出组件。
- 根据权利要求1至4任一项所述的可重构光分插复用器,其特征在于,还包括第三重定向组件和/或第四重定向组件;所述第一开关阵列,具体用于在波长展开平面通过所述第三重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第二开关阵列;其中,所述第三重定向组件,用于在波长展开平面接收所述第一开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并重定向至所述第二开关阵列;所述第二开关阵列,具体用于在波长展开平面通过所述第四重定向组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路由至所述第三开关阵列;其中,所述第四重定向组件,用于在波长展开平面接收所述第二开关阵列输出的所述A个子光束、所述B个子光束和所述P个输入光束的子光束并重定向至所述第三开关阵列。
- 根据权利要求1至5任一项所述的可重构光分插复用器,其特征在于,还包括:第三光斑扩束组件和第四光斑扩束组件;所述输入组件,具体用于在端***换平面通过所述第三光斑扩束组件将所述M+P个输入端口接收的输入光束输出至所述第一开关阵列,其中,所述第三光斑扩束组件,用于在端***换平面,从所述输入组件接收M+P个输入光束,并改变所述M+P个输入光束的光束特性后输出至所述第一开关阵列;所述第三开关阵列,具体用于在端***换平面通过所述第四光斑扩束组件将所述A个子光束、所述B个子光束和所述P个输入光束的子光束路 由至所述输出组件;其中,所述第四光斑扩束组件,用于在端***换平面,从所述第三开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并改变所述A个子光束、所述B个子光束和所述P个光束的子光束的光束特性后输出至所述输出组件。
- 根据权利要求6所述的可重构光分插复用器,其特征在于,还包括:第五重定向组件和/或第六重定向组件;所述第一开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第五重定向组件路由至所述第二开关阵列;其中,所述第五重定向组件,用于从所述第一开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第二开关阵列;所述第二开关阵列,具体用于,在端***换平面将所述A个子光束、所述B个子光束和所述P个光束的子光束通过所述第六重定向组件路由至所述第三开关阵列;其中,所述第六重定向组件,用于从所述第二开关阵列接收所述A个子光束、所述B个子光束和所述P个光束的子光束并重定向至所述第三开关阵列。
- 根据权利要求1至7任一项所述的可重构光分插复用器,其特征在于,还包括:输入准直器阵列,包括M+P个准直器,分别与所述M+P个输入端口对应,用于将所述M+P个输入端口输入的光束转换成准直光束;输出准直器阵列,包括N+Q个准直器,分别与所述N+Q个输出端口对应,用于将准备在所述N+Q个输出端口输出的光束转换成准直光束。
- 根据权利要求2所述的可重构光分插复用器,其特征在于,所述第一波长色散组件和第二波长色散组件均包括至少一个色散单元。
- 根据权利要求5所述的可重构光分插复用器,其特征在于,所述第一重定向组件、第二重定向组件包括至少一个透镜。
- 根据权利要求1至10任一项所述的可重构光分插复用器,其特征在于,所述第一开关阵列、所述第二开关阵列和所述第三开关阵列为微机电***MEMS、硅基液晶LCOS或平面波导开关阵列中的一种或多种。
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