WO2016008145A1 - 一种路由节点、光交换网络及光信号传输的方法 - Google Patents

一种路由节点、光交换网络及光信号传输的方法 Download PDF

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Publication number
WO2016008145A1
WO2016008145A1 PCT/CN2014/082460 CN2014082460W WO2016008145A1 WO 2016008145 A1 WO2016008145 A1 WO 2016008145A1 CN 2014082460 W CN2014082460 W CN 2014082460W WO 2016008145 A1 WO2016008145 A1 WO 2016008145A1
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WO
WIPO (PCT)
Prior art keywords
optical
routing node
optical signal
waveguide
destination routing
Prior art date
Application number
PCT/CN2014/082460
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English (en)
French (fr)
Inventor
宋亮
张巍
郝沁汾
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480038007.0A priority Critical patent/CN105453495B/zh
Priority to PCT/CN2014/082460 priority patent/WO2016008145A1/zh
Priority to EP14897878.6A priority patent/EP3160094B1/en
Publication of WO2016008145A1 publication Critical patent/WO2016008145A1/zh
Priority to US15/407,441 priority patent/US10117007B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0071Provisions for the electrical-optical layer interface
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/15Interconnection of switching modules
    • H04L49/1553Interconnection of ATM switching modules, e.g. ATM switching fabrics
    • H04L49/1576Crossbar or matrix
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/35Switches specially adapted for specific applications
    • H04L49/356Switches specially adapted for specific applications for storage area networks
    • H04L49/357Fibre channel switches
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0003Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00Packet switching elements
    • H04L49/30Peripheral units, e.g. input or output ports
    • H04L49/3018Input queuing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005Switch and router aspects
    • H04Q2011/0007Construction
    • H04Q2011/002Construction using optical delay lines or optical buffers or optical recirculation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0073Provisions for forwarding or routing, e.g. lookup tables

Definitions

  • the present invention relates to the field of silicon optical technologies, and in particular, to a routing node, an optical switching network, and a method for optical signal transmission. Background technique
  • the on-chip optical network includes at least one routing node, and each routing node can be connected to a device, and the device can download optical signals from the on-chip optical network through the connected routing node, and the device can also be connected through the connected routing node. The optical signal is uploaded in the on-chip optical network.
  • the routing node includes: a beam splitter 101, an optical delay unit 102, a wave decomposition multiplexer 103, a tunable wavelength converter 104, a wavelength router 105, and a first The variable multi-wavelength optical buffer unit 106, the second variable multi-wavelength optical buffer unit 107, the wavelength division multiplexer 108, the feedback waveguide delay ring 109, and the control unit 110.
  • one end of the beam splitter 101 is connected to the device, and the other end of the beam splitter 101 is connected to one end of the optical delay unit 102; the other end of the optical delay unit 102 is connected to one end of the wave decomposition multiplexer 103, and the wave decomposition multiplexer 103
  • the other end is connected to one end of the tunable wavelength converter 104; the other end of the tunable wavelength converter 104 is connected to one end of the wavelength router 105, and the other end of the wavelength router 105 is connected to one end of the first variable multi-wavelength optical buffer unit 106, first
  • the other end of the variable multi-wavelength optical buffer unit 106 is connected to one end of the wavelength division multiplexer 108, and the other end of the wavelength division multiplexer 108 is connected to the next routing node;
  • One end of the wavelength optical buffer unit 107, the other end of the second variable multi-wavelength optical buffer unit 107 is connected to one end of the feedback waveguide ring 109, and the other end of the feedback
  • the optical signal transmission method based on the routing node provided in the prior art is: the optical signal is transmitted to the beam splitter 101, and the beam splitter 101 divides the optical signal into a first optical signal and a second optical signal, and the First An optical signal is transmitted to the control unit 110, and the second optical signal is transmitted to the optical delay unit 102.
  • the optical delay unit 102 slows down the transmission rate of the second optical signal, and transmits the second optical signal to the wave.
  • the demultiplexer 103 transmits the second optical signal to the tunable wavelength converter 104 by the wave decomposition multiplexer 103.
  • the control unit 110 parses the first optical signal to obtain the identifier of the destination routing node of the optical signal, and the control unit 110 determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state, if Determining that it is in a busy state, the control unit 110 sends a first control signal to the tunable wavelength converter 104, so that the tunable wavelength converter 104 adjusts the wavelength of the second optical signal to the second variable multi-wavelength optical buffer unit 107.
  • the required wavelength, and the adjusted second optical signal is transmitted to the wavelength router 105, and transmitted by the wavelength router 105 to the second variable multi-wavelength optical buffer unit 107, and the second variable multi-wavelength optical buffer unit 107 is adjusted.
  • the second optical signal is transmitted to the feedback waveguide ring 109, and the second optical signal is cyclically stored in the feedback waveguide ring 109; when the desired output port of the destination routing node of the optical signal is in an idle state, the control unit 110 transmitting a second control signal to the tunable wavelength converter 104, causing the tunable wavelength converter 104 to adjust the wavelength of the second optical signal a wavelength required in the first variable multi-wavelength optical buffer unit 106, and transmitting the adjusted second optical signal to the wavelength router 105, and transmitting, by the wavelength router 105, the adjusted second optical signal to the first variable
  • the multi-wavelength optical buffer unit 106 is transmitted by the first variable multi-wavelength optical buffer unit 106 to the wavelength division multiplexer 108 and transmitted by the wavelength division multiplexer
  • control unit 110 has the functions of control and arbitration, the circuit design in the control unit 110 is complicated; and the devices used in the routing node are used. Too much is too complicated to integrate on a single chip. Summary of the invention
  • the present invention provides a routing node, an optical switching network, and a method of optical signal transmission.
  • the technical solution is as follows:
  • the present invention provides a routing node, where the routing node includes:
  • At least one optical buffer, a switching node, and at least one transmission waveguide the number of the optical buffers being the same as the number of the transmission waveguides;
  • each of the at least one optical buffer is coupled to an input of the switching node; each of the at least one transmission waveguide is coupled to an output of the switching node;
  • the buffer receives the optical signal, parses the optical signal to obtain an identifier of the destination routing node, and sends the identifier of the destination routing node to the switching node;
  • the switching node determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state, and if it is determined to be in a busy state, controlling the optical buffer to buffer the optical signal.
  • the switching node includes: an arbiter and a switch;
  • An output end of each of the optical buffers is connected to an input end of the arbiter, an output end of the arbiter is connected to one end of the switch, and an output end of each of the optical buffers is further connected to the switch One end of the switch, the other end of the switch is connected to each of the transmission waveguides;
  • the arbitrator receives the identifier of the destination routing node sent by the optical buffer, and determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state; Being in a busy state, controlling the optical buffer to buffer the optical signal, until the required output port of the destination routing node becomes idle, controlling the switch to buffer the optical buffer through the transmission waveguide.
  • the optical signal is sent to the destination routing node; if it is determined to be in an idle state, the switch is controlled to send the optical signal received by the optical buffer to the destination routing node through the transmission waveguide.
  • the optical buffer includes:
  • a beam splitter a curved through waveguide, a controller, a plurality of optical delay waveguide rings, a first optical switch and a second optical switch corresponding to each of the plurality of optical delay waveguide rings, the curved through
  • the shape of the waveguide is n-shaped;
  • a first output end of the beam splitter is connected to an input end of the curved through waveguide, an output end of the curved through waveguide is connected to the switching node; and a second output end of the beam splitter is connected to the controller An output end of the controller is connected to the first optical switch and the second optical switch corresponding to each of the optical delay waveguide rings; each of the optical delay waveguide rings passes through a corresponding first optical switch and a second An optical switch is coupled to the arms of the curved through waveguide;
  • the beam splitter receives an optical signal, and divides the optical signal into a first optical signal and a second optical signal. Transmitting the first optical signal to the controller, and sending the second optical signal to the curved through-waveguide; the controller parsing the first optical signal to obtain an identifier of the destination routing node, and transmitting Describe the identifier of the destination routing node to the switching node;
  • the controller sends the second optical signal to the switching node through the curved through-waveguide, so that Transmitting, by the switching node, the second optical signal to the destination routing node by using a transmission waveguide corresponding to the required output port of the destination routing node;
  • the controller selects an optical delay waveguide ring, and controls the first optical switch and the second switch corresponding to the optical delay waveguide ring. Causing the second optical signal in the optical delay waveguide ring, until the required output port of the destination routing node becomes idle, controlling the second optical switch corresponding to the optical delay waveguide ring, The second optical signal buffered in the optical delay waveguide ring is sent to the switching node through the curved through-waveguide, so that the switching node sends through a transmission waveguide corresponding to an output port required by the destination routing node. The second optical signal is sent to the destination routing node.
  • the controller includes an electro-optical conversion unit and a processing unit;
  • a second output end of the beam splitter is connected to an input end of the electro-optical conversion unit; an output end of the electro-optical conversion unit is connected to an input end of the processing unit, and an output end of the processing unit is connected to the switching node Input
  • the processing unit receives, by the electro-optical conversion unit, the first optical signal sent by the beam splitter, converting the first optical signal into a first electrical signal, and transmitting the first electrical signal to the processing unit
  • the processing unit parses the first electrical signal to obtain an identifier of the destination routing node, and sends an identifier of the destination routing node to the switching node;
  • the processing unit sends the second optical signal to the switching node through the curved through-waveguide, so that Transmitting, by the switching node, the second optical signal to the destination routing node by using a transmission waveguide corresponding to the required output port of the destination routing node;
  • the processing unit controls the first optical switch and the second optical switch corresponding to the optical delay waveguide ring, and the second path is The optical signal is buffered in the optical delay waveguide ring, and when the desired output port of the destination routing node becomes an idle state, the second optical switch corresponding to the optical delay waveguide ring is controlled, and the light is Transmitting the second optical signal buffered in the delay waveguide ring to the switching node through the curved through-waveguide, so that the switching node sends the first transmission through a transmission waveguide corresponding to the required output port of the destination routing node The two optical signals are sent to the destination routing node.
  • the optical buffer further includes an optical amplifying switch
  • a first output end of the beam splitter is connected to one end of the optical amplifying switch, and the other end of the optical amplifying switch is connected to an input end of the curved through-waveguide;
  • the present invention provides a method for optical signal transmission, characterized in that the method comprises:
  • Receiving an optical signal by the optical buffer parsing the optical signal to obtain an identifier of the destination routing node; determining, according to the destination routing node, an identifier, whether the required output port of the destination routing node is currently in an idle state or a busy state;
  • the optical signal is buffered in the optical buffer, until the required output port of the destination routing node becomes an idle state, and the corresponding output port of the destination routing node is transmitted. Transmitting, by the waveguide, the optical signal buffered in the optical buffer to the destination routing node;
  • the optical signal is sent to the destination routing node through a transmission waveguide corresponding to the desired output port of the destination routing node.
  • the determining, by the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state includes:
  • the analyzing the optical signal to obtain the identifier of the destination routing node includes:
  • the optical signal is split by a beam splitter to obtain a first optical signal
  • the buffering the optical signal in the optical buffer includes:
  • the optical signal is split by a beam splitter to obtain a second optical signal
  • the controlling the first optical switch and the second optical switch corresponding to the optical delay waveguide ring, the optical signal Cached in the second optical delay waveguide ring including:
  • the transmission waveguide corresponding to the required output port of the destination routing node is to be cached in the optical buffer Sending the optical signal to the destination routing node, including:
  • the method before the inputting the second optical signal to the curved through-waveguide, the method further includes: Amplifying the second optical signal.
  • the transmitting by the transmitting waveguide corresponding to the required output port of the destination routing node, the optical signal to the destination routing node, includes:
  • optical buffer does not have other optical signals that need to be transmitted to the destination routing node, send the optical signal to the destination routing node;
  • the optical signal is buffered in the optical buffer to obtain the other optical signal, which is required by the destination routing node.
  • the transmission waveguide corresponding to the output port sends the other optical signal to the destination routing node; after the transmission of the other optical signal is completed, the optical signal buffered by the transmission waveguide corresponding to the required output port of the destination routing node Send to the destination routing node.
  • the method further includes: if the optical signal buffer fails, sending a packet loss message to a signal source of the optical signal, so that the The signal source retransmits the optical signal.
  • the present invention provides an optical switching network, where the optical switching network includes: multiple routing nodes and transmission waveguides; the routing node is the routing node described in the first aspect;
  • the plurality of routing nodes are interconnected by the transmission waveguide to form a required topology.
  • the optical switching network further includes: an electrical bus;
  • the plurality of routing nodes are connected to the external device through the electrical bus.
  • the routing node is composed of a switching node and an optical buffer, and requires fewer devices, and is easy to be integrated on a single chip. Moreover, the routing node is parsed by the optical buffer to obtain the identifier of the destination routing node, and is exchanged. The node judges whether the required output port of the destination routing node is currently in an idle state or a busy state, thereby implementing a separate processing of control and arbitration, which simplifies the circuit complexity of the switching node and the optical buffer.
  • FIG. 1 is a schematic structural diagram of a routing node provided in the background art
  • FIG. 2 is a schematic structural diagram of a routing node according to Embodiment 1 of the present invention.
  • Embodiment 3 is a schematic structural diagram of an optical buffer provided by Embodiment 1 of the present invention.
  • FIG. 5 is a flowchart of a method for transmitting optical signals according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic structural diagram of an optical switching network according to Embodiment 4 of the present invention. detailed description
  • the embodiment of the invention provides a routing node.
  • the routing node includes: at least one optical buffer 201, a switching node 202, and at least one transmission waveguide 203, and the number of optical buffers 201 is the same as the number of transmission waveguides 203;
  • each of the at least one optical buffer 201 is coupled to an input of the switching node 202; each of the at least one transmission waveguide 203 is coupled to an output of the switching node 202;
  • the optical buffer 201 receives the optical signal, and parses the optical signal to obtain the identifier of the destination routing node; and sends the identifier of the destination routing node to the switching node 202;
  • the switching node 202 determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state. If it is determined to be in a busy state, the control optical buffer 201 buffers the optical signal until the destination router node needs the output. When the port becomes the idle state, the optical signal buffered in the optical buffer 201 is sent to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node; if it is determined to be in the idle state, it is required to pass the destination routing node. The transmission waveguide 203 corresponding to the output port transmits the optical signal received by the optical buffer 201 to the destination routing node.
  • the switching node 202 determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node currently has a transmission task; if it is determined that there is no transmission task, it is determined that the required output port of the destination routing node is currently in an idle state; Transmitting an instruction to the optical buffer 201; the optical buffer 201 receives the transmission instruction sent by the switching node 202, and transmits the received optical signal according to the transmission instruction.
  • the switching node 202 receives the received optical signal sent by the optical buffer 201, and transmits the received optical signal to the transmission waveguide 203 corresponding to the desired output port of the destination routing node;
  • the transmission waveguide 203 receives the received optical signal transmitted by the switching node 202 and transmits the received optical signal to the destination routing node.
  • the switching node 202 determines that the required output port of the destination routing node is currently in a busy state; sends a storage instruction to the optical buffer 201, and the optical buffer 201 receives the storage instruction sent by the switching node 202, and according to the The store instruction caches the optical signal in the optical buffer 201.
  • the switching node 202 sends a transmission instruction to the optical buffer 201; the optical buffer 201 receives the transmission instruction sent by the switching node 202, and acquires the buffered optical signal.
  • the buffered optical signal is sent to the switching node 202; the switching node 202 receives the buffered optical signal sent by the optical buffer 201, and sends the buffered optical signal to the transmission waveguide 203 corresponding to the desired output port of the destination routing node; The transmission waveguide 203 corresponding to the required output port receives the buffered optical signal sent by the switching node 202 and sends it to the destination routing node.
  • the switching node 202 generates a transmission task according to the identifier of the signal source and the identifier of the destination routing node, adds the transmission task to the task list, and determines whether the transmission task and other tasks in the task list except the transmission task The transmission tasks are the same. If they are the same, it is determined that the required output port of the destination routing node currently has a transmission task. If not, it is determined that the required output port of the destination routing node does not currently have a transmission task.
  • the current refers to the current time slot.
  • the switching node 202 includes: an arbiter and a switch;
  • each optical buffer 201 is connected to the input end of the arbiter, the output end of the arbiter is connected to one end of the switch, the output end of each buffer 201 is also connected to one end of the switch, and the other end of the switch is connected.
  • the arbitrator receives the identifier of the destination routing node sent by the optical buffer 201, and determines, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state; if it is determined to be in a busy state, the control optical buffer 201 The optical signal is buffered until the desired output port of the destination routing node becomes idle.
  • the control switch switches the optical signal buffered in the optical buffer 201 to the destination routing node through the transmission waveguide 203. If it is determined to be in an idle state, the control exchange is performed.
  • the switch transmits the optical signal received by the optical buffer 201 to the destination routing node through the transmission waveguide 203.
  • the arbiter determines the required output port of the destination routing node according to the identifier of the destination routing node. If there is currently a transmission task, if it is determined that there is no transmission task, it is determined that the required output port of the destination routing node is currently in an idle state; a transmission command is sent to the optical buffer 201 and the switch; the optical buffer 201 receives the arbiter transmission. Transmitting an instruction, and transmitting the received optical signal to the exchange switch according to the transmission instruction; the exchange switch receives the transmission instruction sent by the arbiter and the received optical signal sent by the optical buffer 201, and opens the required output port of the destination routing node according to the transmission instruction. Corresponding switching switch sends the optical signal received by the optical buffer 201 to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination node.
  • the optical buffer 201 receives the storage instruction sent by the arbiter, and according to the storage instruction, The optical signal is buffered in the optical buffer 201.
  • the arbiter determines that the desired output port of the destination routing node becomes idle, the arbiter sends a transmission instruction to the optical buffer 201 and the switch; the optical buffer 201 receives the transmission instruction sent by the arbiter, and acquires the buffered optical signal.
  • the switch receives the transmission command sent by the arbiter and the buffered optical signal sent by the optical buffer 201, and according to the transmission instruction, opens the switch corresponding to the output port required by the destination routing node,
  • the transmission waveguide 203 corresponding to the desired output port of the node transmits the buffered optical signal to the destination routing node.
  • the optical buffer 201 includes: a beam splitter 2011, a curved through waveguide 2012, a controller 2013, a plurality of optical delay waveguide rings 2014, and each of the plurality of optical delay waveguide rings 2014.
  • the first optical switch 2015 and the second optical switch 2016 corresponding to 2014, the shape of the curved through waveguide 2012 is n-shaped;
  • the first output end of the beam splitter 2011 is connected to the input end of the curved through waveguide 2012, and the output end of the curved through waveguide 2012 is connected to the switching node 202; the second output end of the beam splitter 2011 is connected to the input end of the controller 2013, and is controlled.
  • the output of the device 2013 is connected to the first optical switch 2015 and the second optical switch 2016 corresponding to each optical delay waveguide ring 2014; each optical delay waveguide ring 2014 passes through a corresponding first optical switch 2015 and second optical switch 2016
  • the two arms of the curved through waveguide 2012 are connected;
  • the beam splitter 2011 receives the optical signal, divides the optical signal into a first optical signal and a second optical signal, transmits a first optical signal to the controller 2013, and transmits a second optical signal to the curved through waveguide 2012; the controller 2013, parsing the first optical signal to obtain the identifier of the destination routing node, and sending the identifier of the destination routing node to the switching node 202;
  • the controller 2013 sends the second optical signal to the switching node 202 through the curved through-waveguide 2012, so that the switching node 202 sends the second optical signal to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node;
  • the controller 2013 selects the optical delay waveguide ring 2014, and controls the first optical switch 2015 and the second switch corresponding to the optical delay waveguide ring 2014.
  • the two optical signals are buffered in the optical delay waveguide ring 2014.
  • the second optical switch 2016 corresponding to the optical delay waveguide ring 2014 is controlled, and the optical delay is buffered in the waveguide ring 2014.
  • the second optical signal is sent to the switching node 202 through the curved through-waveguide 2012, so that the switching node 202 sends the second optical signal to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node.
  • the controller 2013 randomly selects an idle optical delay waveguide ring 2014, or selects an idle one that is closest to the controller 2013.
  • Optical retardation waveguide ring 2014 controlling the first optical switch 2015 corresponding to the optical delay waveguide ring 2014 to be turned on and the second optical switch 2016 to be turned off, so that the second optical signal enters the optical delay waveguide ring 2014;
  • the first optical switch 2015 corresponding to the control optical delay waveguide ring 2014 is turned off, and the second optical signal is cyclically stored in the optical delay waveguide ring 2014.
  • the controller 2013 controls the second optical switch 2016 corresponding to the optical delay waveguide ring 2014 to be turned on, so that the optical delay waveguide ring 2014 is cached.
  • the two optical signals enter the curved through waveguide 2012 and are transmitted to the switching node 202 through the curved through waveguide 2012.
  • the curved through waveguide 2012 includes a slow light effect waveguide, which can slow down the transmission rate of the second optical signal, so that the switching node 202 can have enough time to judge that the required output port of the destination routing node is currently in the The idle state is still busy.
  • controller 2013 includes an electro-optical conversion unit and a processing unit;
  • the second output end of the beam splitter 2011 is connected to the input end of the electro-optical conversion unit; the output end of the electro-optical conversion unit is connected to the input end of the processing unit, the output end of the processing unit is connected to the input end of the switching node 202; and the electro-optical conversion unit receives the beam splitter
  • the first optical signal sent in 2011 converts the first optical signal into a first electrical signal, and sends the first electrical signal to the processing unit; the processing unit parses the first electrical signal to obtain the identity of the destination routing node, and the purpose of the transmission
  • the identifier of the routing node is sent to the switching node 202;
  • the processing unit sends the second optical signal to the switching node 202 through the curved through-waveguide 2012, so that the switching node 202 sends the second optical signal to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node;
  • the processing unit controls the first optical switch 2015 and the second optical switch 2016 corresponding to the optical delay waveguide ring 2014, and buffers the second optical signal in the In the optical delay waveguide ring 2014, when the required output port of the destination routing node becomes the idle state, the second optical switch 2016 corresponding to the optical delay waveguide ring 2014 is controlled, and the second optical signal buffered in the optical delay waveguide ring 2014 is passed.
  • the curved through-waveguide 2012 is sent to the switching node 202 to cause the switching node 202 to transmit the second optical signal to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node.
  • the processing unit sends a turn-on command to the first optical switch 2015 corresponding to the optical delay waveguide ring 2014, and sends a close command to the optical delay waveguide ring.
  • the second optical switch 2016 corresponding to 2014; the first optical switch 2015 corresponding to the optical delay waveguide ring 2014 receives the turn-on command sent by the processing unit, and opens the connection between the curved straight-through waveguide 2012 and one end of the optical delay waveguide ring 2014 according to the turn-on command.
  • the second optical switch 2016 corresponding to the optical delay waveguide ring 2014 receives the closing instruction sent by the processing unit, and according to the closing instruction, closes the connection between the other end of the optical delay waveguide ring 2014 and the curved through-waveguide 2012, so that the second optical path
  • the signal enters the optical delay waveguide ring 2014; when the second optical signal completely enters the optical delay waveguide ring 2014, the off command is sent to the first optical switch 2015 corresponding to the optical delay waveguide ring 2014; the optical delay waveguide ring 2014 corresponds to the first
  • the optical switch 2015 receives a shutdown command sent by the processing unit, and according to the shutdown finger
  • the connection between the curved through-waveguide 2012 and the optically retarded waveguide ring 2014 is such that the second optical signal is cyclically stored in the optically delayed waveguide ring 2014.
  • the sending open command is sent to the second optical switch 2016 corresponding to the optical delay waveguide ring 2014; the second optical switch 2016 corresponding to the optical delay waveguide ring 2014 is received and processed.
  • the switching node 202 is sent to the switching node 202 to send the second optical signal to the destination routing node through the transmission waveguide 203 corresponding to the desired output port of the destination routing node.
  • optical buffer 201 further includes an optical amplification switch 2017;
  • the first output end of the beam splitter 2011 is connected to one end of the optical amplification switch 2017, and the optical amplification switch 2017 The other end is connected to the input end of the curved through waveguide 2012;
  • Beam splitter 2011 sends the second optical signal to the optical amplifier switch 2017.
  • the optical amplifier switch 2017 amplifies the second optical signal and sends the amplified second optical signal to the curved through-waveguide 2012.
  • the second optical signal has energy loss during transmission, and in order to compensate for the loss, an optical amplifying switch 2017 is disposed in the buffer 201, and the second optical signal is input to the curved through-waveguide 2012, and the second optical path is The signal is amplified, and the amplified second optical signal is input to the curved through waveguide 2012.
  • the routing node is composed of a switching node and an optical buffer, and requires fewer devices, and is easy to be integrated on a single chip. Moreover, the routing node is parsed by the optical buffer to obtain the identifier of the destination routing node, and is exchanged. The node judges whether the required output port of the destination routing node is currently in an idle state or a busy state, thereby implementing a separate processing of control and arbitration, which simplifies the circuit complexity of the switching node and the optical buffer.
  • Embodiments of the present invention provide a method for transmitting optical signals. Referring to Figure 4, the method includes:
  • Step 301 Receive an optical signal by using an optical buffer, and parse the optical signal to obtain an identifier of the destination routing node.
  • Step 302 Determine, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state;
  • Step 303 If it is determined that it is in a busy state, the optical signal is buffered in the optical buffer until the required output port of the destination routing node becomes idle, and the optical buffer is passed through the transmission waveguide corresponding to the desired output port of the destination routing node. The buffered optical signal is sent to the destination routing node;
  • Step 304 If it is determined that it is in an idle state, the optical signal is sent to the destination routing node through the transmission waveguide corresponding to the required output port of the destination routing node.
  • the optical signal is buffered in the optical buffer until the required output port of the destination routing node becomes idle, and the destination routing node passes the destination routing node.
  • the optical waveguide corresponding to the transmission waveguide of the output port needs to send the buffered signal to the destination routing node, thereby improving the utilization of network resources.
  • Embodiments of the present invention provide a method for optical signal transmission. See Figure 5, where the method package Includes:
  • Step 401 Receive an optical signal by using an optical buffer, and parse the optical signal to obtain an identifier of the destination routing node.
  • the signal source sends an optical signal to the routing node, and the routing node receives the optical signal sent by the signal source through the optical buffer.
  • the signal source may be a routing node other than the routing node, and the signal source may also be a processor capable of transmitting an optical signal.
  • the step of analyzing the optical signal to obtain the identifier of the destination routing node includes the following steps (1) and (2):
  • the optical signal After receiving the optical signal through the optical buffer, the optical signal is sent to the beam splitter, the beam splitter receives the optical signal, and divides the optical signal into a first optical signal and a second optical signal, and sends the first optical signal.
  • the controller determines, according to the first optical signal, whether the desired output port of the destination routing node is currently in an idle state or a busy state; sending a second optical signal to the curved through-waveguide to slow the curved through-waveguide
  • the transmission rate of the two optical signals ensures that there is enough time to judge whether the desired output port of the destination routing node is currently in an idle state or a busy state.
  • the curved through-waveguide includes a slow-light effect waveguide, which can slow down the transmission rate of the second optical signal.
  • the second optical signal has energy loss during transmission, and in order to compensate for the loss, an optical amplifying switch is disposed in the buffer, and the second optical signal is input to the curved through waveguide, and the second optical signal is amplified. , input the amplified second optical signal to the curved through waveguide.
  • the controller receives the first optical signal, and converts the first optical signal into the first electrical signal by using the electro-optical conversion unit included in the controller; and parses the first electrical circuit by using a processing unit included in the controller.
  • the signal gets the identity of the destination routing node.
  • the identifier of the destination routing node may be the name of the destination routing node, and the like.
  • the controller generates a transmission request according to the identifier of the destination routing node and the identifier of the routing node, and sends the transmission request to the switching node, and step 402 is performed.
  • Step 402 Determine, according to the identifier of the destination routing node, whether the required output port of the destination routing node is currently in an idle state or a busy state; if it is determined to be in a busy state, perform step 403, such as If it is determined that it is in an idle state, step 405 is performed;
  • the step 402 may include the following steps (1) to (3):
  • the switching node receives the transmission request sent by the controller, and determines whether the destination port of the destination routing node currently has a transmission task through the arbiter.
  • the step of determining whether the arbitrator needs the output port of the destination routing node to have a transmission task at present may be:
  • the arbiter adds the transmission task to the task list, and determines whether the transmission task and the task list have the same transmission tasks except the transmission task. If they are the same, it is determined that the required output port of the destination routing node is currently present. The transmission task; if not the same, it is determined that the required output port of the destination routing node has no transmission task at present.
  • the transmission task is: routing node 1 to routing node 2; tasks existing in the task list include: routing node 1 to routing node 2, routing node 1 to routing node 3, and routing node 1 to routing node 4; After the transmission task is added to the task list, the tasks in the task list include: routing node 1 to routing node 2, routing node 1 to routing node 3, routing node 1 to routing node 4, and routing node 1 to routing node 2.
  • the entire task list is queried from the beginning, and the arbiter determines that the first task in the task list is the same as the fourth task, and determines that the required output port of the destination routing node has a current transfer task.
  • Step 403 Select an optical delay waveguide ring, control the first optical switch and the second optical switch corresponding to the optical delay waveguide ring, and buffer the second optical signal in the curved through-waveguide in the optical delay waveguide ring;
  • step 403 can include the following steps (1) and (2):
  • the controller may randomly select an idle optical delay waveguide, or may select an idle optical delay waveguide ring closest to the controller, and send an open command to the first corresponding to the optical delay waveguide ring.
  • the optical switch the first optical switch corresponding to the optical delay waveguide ring receives an open command sent by the controller, and according to the open command, opens a connection between the optical delay waveguide ring and the curved through-waveguide; the controller sends a close command to the optical delay waveguide ring
  • the second switch corresponding to the optical delay waveguide ring receives the closing command sent by the controller, and according to the closing command, closes the connection between the optical delay waveguide ring and the curved through waveguide, and bends the second path in the through waveguide
  • the optical signal enters the optical delay waveguide ring.
  • the identifier of the optical delay waveguide ring and the identifier of the desired output port of the destination routing node are stored in the identifier and purpose of the optical delay waveguide ring. The correspondence between the identifiers of the output ports required by the routing node.
  • the second optical signal is obtained from the optical delay waveguide ring, according to the identifier of the required output port of the destination routing node, the correspondence between the identifier of the optical delay waveguide ring and the identifier of the desired output port of the destination routing node And acquiring an identifier of the optical delay waveguide ring stored by the second optical signal, and acquiring a second optical signal from the optical delay waveguide ring according to the acquired identifier of the optical delay waveguide ring.
  • the identifier of the optical delay waveguide ring may be the number of the optical delay waveguide ring, or the position of the optical delay waveguide ring.
  • the controller discards the optical signal and sends a packet loss message to the signal source of the optical signal to cause the signal source to retransmit the optical signal in the next time slot.
  • the optical delay waveguide ring can not only store the second optical signal but also slow down the transmission rate of the second optical signal.
  • the controller sends a shutdown command to the first switch corresponding to the optical delay waveguide ring; the first switch corresponding to the optical delay waveguide ring receives the shutdown command sent by the controller And closing the connection between the optical delay waveguide ring and the curved through waveguide according to the closing instruction, and the second optical signal is cyclically stored in the optical delay waveguide ring.
  • the controller controls the first optical switch corresponding to the optical delay waveguide ring to be turned on and the second optical switch corresponding to the optical delay waveguide ring to be turned off, so that the second optical signal in the curved through-waveguide starts to count when entering the optical delay waveguide ring. After the preset time, it is determined that the second optical signal completely enters the optical delay waveguide ring.
  • the preset time may be set and changed as needed.
  • the preset time is not specifically limited.
  • Step 404 When the required output port of the destination routing node becomes idle, the optical signal buffered in the optical buffer is sent to the destination path through the transmission waveguide corresponding to the required output port of the destination routing node. End by node.
  • step 404 includes the following steps (1) and (2):
  • the controller obtains the identifier of the optical delay waveguide ring from the corresponding relationship between the identifier of the optical delay waveguide ring and the identifier of the required output port of the destination routing node according to the identifier of the output port required by the destination routing node, according to the optical delay.
  • the identifier of the waveguide ring sends an open command to the second optical switch corresponding to the optical delay waveguide ring, and the second switch corresponding to the optical delay waveguide ring receives the open command sent by the controller, and the output is switched from the optical delay waveguide according to the number and enters
  • the curved through-waveguide communicates with the transmission waveguide corresponding to the desired output port of the destination routing node, and the second optical signal is transmitted to the transmission waveguide corresponding to the desired output port of the destination routing node through the curved through-waveguide.
  • the second optical signal is sent to the destination routing node through the transmission waveguide corresponding to the desired output port of the destination routing node.
  • Step 405 Send an optical signal to the destination routing node by using a transmission waveguide corresponding to the required output port of the destination routing node.
  • step 405 can include the following steps (1) to (4):
  • the arbiter sends feedback information to the controller, where the feedback information is to perform the transmission task or store the transmission task; the controller receives the feedback information sent by the arbiter, and determines whether the optical buffer needs to be transmitted to the destination route.
  • the other optical signals of the node if there is no execution step (2), if there is an execution step (3).
  • the transmission task is: routing node 1 to routing node 2, the feedback information is an optical signal transmitting routing node 1 to routing node 2; the controller determines whether there is another optical signal in the buffer that needs to be transmitted to routing node 2, If present, the optical signal is buffered first, and the other optical signal is transmitted; if not, the optical signal is transmitted.
  • optical signal is buffered in the optical buffer, and may include the following steps (3-1) and (3-2): (3-1): selecting an optical delay waveguide ring, and controlling the corresponding portion of the optical delay waveguide ring An optical switch and a second optical switch, the optical signal is buffered in the optical delay waveguide ring;
  • This step is the same as (1) of step 403, and details are not described herein again.
  • the identifier of the optical delay waveguide ring controls the second switch corresponding to the obtained optical delay waveguide ring to be turned on, so that the other optical signal enters the curved through-waveguide from the obtained optical delay waveguide ring, and is transmitted to the destination route by the curved through-waveguide The transmission waveguide corresponding to the desired output port of the node.
  • the buffered optical signal is sent to the destination routing node through the transmission waveguide corresponding to the desired output port of the destination routing node.
  • This step is the same as step 404 and will not be described here.
  • the optical signal is buffered in the optical buffer until the required output port of the destination routing node becomes idle, and the destination routing node passes the destination routing node.
  • the optical waveguide corresponding to the transmission waveguide of the output port needs to send the buffered signal to the destination routing node, thereby improving the utilization of network resources.
  • Embodiments of the present invention provide an optical switching network.
  • the optical switching network includes a plurality of routing nodes 501 and transmission waveguides 502;
  • Multiple routing nodes are interconnected by a transmission waveguide to form the required topology.
  • optical switching network further includes: an electrical bus 503;
  • a plurality of routing nodes are connected to the external device via the electrical bus 503.
  • the required topology can be a topological structure such as crassba (crossbar matrix), mesh (wireless mesh network), and torus (toroidal).
  • the external device can be a processor or the like.
  • the routing node is composed of a switching node and an optical buffer, and requires fewer devices, and is easy to be integrated on a single chip. Moreover, the routing node is parsed by the optical buffer to obtain the identifier of the destination routing node, and is exchanged. The node judges whether the required output port of the destination routing node is currently in an idle state or a busy state, thereby implementing a separate processing of control and arbitration, which simplifies the circuit complexity of the switching node and the optical buffer.
  • a person of ordinary skill in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium to which it is obtained may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本发明公开了一种路由节点、光交换网络及光信号传输的方法,属于硅光技术领域。路由节点包括:至少一个光缓存器、交换节点和至少一个传输波导;每个光缓存器的输出端连接交换节点的输入端;每个传输波导连接交换节点的输出端。该方法包括:通过光缓存器接收光信号,解析光信号得到目的路由节点的标识;判断目的路由节点所需输出端口在当前处于空闲还是忙碌;如果忙碌,将光信号缓存在光缓存器中,直到目的路由节点所需输出端口为空闲,通过目的路由节点所需输出端口对应的传输波导将缓存的光信号发送给目的路由节点;如果空闲,通过目的路由节点所需输出端口对应的传输波导发送光信号给目的路由节点。本发明简化交换节点和光缓存器的电路复杂度。

Description

说 明 书 一种路由节点、 光交换网络及光信号传输的方法 技术领域
本发明涉及硅光技术领域, 特别涉及一种路由节点、 光交换网络及光信号 传输的方法。 背景技术
随着片上处理器核数目的增加, 片上网络逐渐应用到片上系统。 由于光互 连具有更高的带宽、 更低的功耗、 更小的时延、 以及更小的串扰和电磁干扰, 因此, 基于光互连方式的片上光网络应运而生。 其中, 片上光网络中包括至少 一个路由节点, 每个路由节点可以连接一个设备, 该设备可以通过其连接的路 由节点从片上光网络中下载光信号, 该设备也可以通过其连接的路由节点向片 上光网络中上传光信号。
现有技术中提供了一种路由节点,参见图 1,该路由节点包括:分束器 101、 光延迟单元 102、 波分解复用器 103、 可调波长转换器 104、 波长路由器 105、 第一可变多波长光緩存单元 106、 第二可变多波长光緩存单元 107、 波分复用 器 108、 反馈波导延迟环 109和控制单元 110。 其中, 分束器 101的一端连接 设备, 分束器 101的另一端连接光延迟单元 102的一端; 光延迟单元 102的另 一端连接波分解复用器 103的一端, 波分解复用器 103的另一端连接可调波长 转换器 104的一端;可调波长转换器 104的另一端连接波长路由器 105的一端, 波长路由器 105的另一端连接第一可变多波长光緩存单元 106的一端, 第一可 变多波长光緩存单元 106的另一端连接波分复用器 108的一端,波分复用器 108 的另一端连接下一个路由节点; 波长路由器的 105的另一端还连接第二可变多 波长光緩存单元 107的一端, 第二可变多波长光緩存单元 107的另一端连接反 馈波导环 109的一端,反馈波导环 109的另一端连接可调波长转换器 104的一 端; 分束器 101的另一端还连接控制单元 110的一端, 控制单元 110的另一端 连接可调波长转换器 104的一端。
基于现有技术中提供的路由节点的光信号传输的方法为: 光信号传入分束 器 101, 分束器 101将该光信号分成第一路光信号和第二路光信号, 并将该第 一路光信号传输给控制单元 110, 将该第二路光信号传输给光延迟单元 102, 光延迟单元 102减緩该第二路光信号的传输速率, 并将该第二路光信号传输给 波分解复用器 103, 由波分解复用器 103将该第二路光信号传输给可调波长转 换器 104。 控制单元 110解析该第一路光信号, 获取该光信号的目的路由节点 的标识, 控制单元 110根据目的路由节点的标识判断该目的路由节点所需输出 端口在当前处于空闲状态还是忙碌状态, 如果确定出处于忙碌状态, 控制单元 110发送第一控制信号给可调波长转换器 104, 使可调波长转换器 104将该第 二光信号的波长调整为第二可变多波长光緩存单元 107中需要的波长, 并将调 整后的该第二光信号传输给波长路由器 105, 由波长路由器 105传输给第二可 变多波长光緩存单元 107, 第二可变多波长光緩存单元 107将调整后的该第二 光信号传输给反馈波导环 109, 使所述第二光信号在所述反馈波导环 109中循 环存储; 当该光信号的目的路由节点所需输出端口处于空闲状态时, 控制单元 110发送第二控制信号给可调波长转换器 104, 使可调波长转换器 104将该第 二光信号的波长调整为第一可变多波长光緩存单元 106中需要的波长, 并将调 整后的该第二光信号传输给波长路由器 105, 由波长路由器 105将调整后的该 第二光信号传输给第一可变多波长光緩存单元 106, 由第一可变多波长光緩存 单元 106传输给波分复用器 108, 由波分复用器 108传输给目的路由节点。
在实现本发明的过程中, 发明人发现现有技术至少存在以下问题: 由于控制单元 110具有控制和仲裁的功能, 导致控制单元 110中的电路设 计复杂;并且,路由节点中所釆用的器件太多太复杂,不易集成在单个芯片上。 发明内容
为了解决现有技术的问题, 本发明提供了一种路由节点、 光交换网络及光 信号传输的方法。 所述技术方案如下:
第一方面, 本发明提供了一种路由节点, 所述路由节点包括:
至少一个光緩存器、 交换节点和至少一个传输波导、 所述光緩存器的数目 和所述传输波导的数目相同;
所述至少一个光緩存器中的每个光緩存器的输出端连接所述交换节点的 输入端; 所述至少一个传输波导中的每个传输波导连接所述交换节点的输出端; 所述光緩存器接收光信号, 解析所述光信号得到目的路由节点的标识; 发 送所述目的路由节点的标识给所述交换节点; 所述交换节点根据所述目的路由节点的标识判断所述目的路由节点所需 输出端口在当前处于空闲状态还是忙碌状态, 如果判断出处于忙碌状态, 则控 制所述光緩存器緩存所述光信号, 直到所述目的路由节点所需输出端口变为空 闲状态时, 通过所述目的路由节点所需输出端口对应的传输波导将所述光緩存 器中緩存的所述光信号发送给所述目的路由节点; 如果判断出处于空闲状态, 则通过所述目的路由节点所需输出端口对应的传输波导将所述光緩存器接收 的所述光信号发送给所述目的路由节点。
结合第一方面, 在第一方面的第一种可能的实现方式中, 所述交换节点包 括: 仲裁器和交换开关;
所述每个光緩存器的输出端连接所述仲裁器的输入端, 所述仲裁器的输出 端连接所述交换开关的一端, 所述每个光緩存器的输出端还连接所述交换开关 的一端, 所述交换开关的另一端连接所述每个传输波导;
所述仲裁器接收所述光緩存器发送的所述目的路由节点的标识,根据所述 目的路由节点的标识判断所述目的路由节点所需输出端口在当前处于空闲状 态还是忙碌状态; 如果判断出处于忙碌状态, 控制所述光緩存器緩存所述光信 号, 直到所述目的路由节点所需输出端口变为空闲状态时, 控制所述交换开关 通过所述传输波导将所述光緩存器中緩存的所述光信号发送给所述目的路由 节点; 如果判断出处于空闲状态, 控制所述交换开关通过所述传输波导将所述 光緩存器接收的所述光信号发送给所述目的路由节点。
结合第一方面, 在第一方面的第二种可能的实现方式中, 所述光緩存器包 括:
分束器、 弯曲直通波导、 控制器、 多个光延迟波导环、 所述多个光延迟波 导环中的每个光延迟波导环对应的第一光开关和第二光开关, 所述弯曲直通波 导的形状为 n形;
所述分束器的第一输出端连接所述弯曲直通波导的输入端, 所述弯曲直通 波导的输出端连接所述交换节点; 所述分束器的第二输出端连接所述控制器的 输入端, 所述控制器的输出端连接所述每个光延迟波导环对应的第一光开关和 第二光开关; 所述每个光延迟波导环通过各自对应的第一光开关和第二光开关 与所述弯曲直通波导的两臂相连;
所述分束器接收光信号,将所述光信号分为第一路光信号和第二路光信号, 发送所述第一路光信号给控制器,发送所述第二路光信号给所述弯曲直通波导; 所述控制器解析所述第一路光信号得到所述目的路由节点的标识,发送所述目 的路由节点的标识给所述交换节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于空闲 状态时, 所述控制器将所述第二路光信号通过所述弯曲直通波导发送给所述交 换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输波 导发送所述第二路光信号给所述目的路由节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于忙碌 状态时, 所述控制器选择光延迟波导环, 控制所述光延迟波导环对应的第一光 开关和第二开关, 将所述第二路光信号緩存在所述光延迟波导环中, 直到所述 目的路由节点所需输出端口变为空闲状态时,控制所述光延迟波导环对应的第 二光开关, 将所述光延迟波导环中緩存的所述第二路光信号通过所述弯曲直通 波导发送给所述交换节点, 以使所述交换节点通过所述目的路由节点所需输出 端口对应的传输波导发送所述第二路光信号给所述目的路由节点。
结合第一方面的第二种可能, 在第一方面的第三种可能的实现方式中, 所 述控制器包括电光转换单元和处理单元;
所述分束器的第二输出端连接所述电光转换单元的输入端; 所述电光转换 单元的输出端连接所述处理单元的输入端, 所述处理单元的输出端连接所述交 换节点的输入端;
所述电光转换单元接收所述分束器发送的所述第一路光信号, 将所述第一 路光信号转换为第一路电信号, 发送所述第一路电信号给所述处理单元; 所述 处理单元解析所述第一路电信号得到所述目的路由节点的标识,发送所述目的 路由节点的标识给所述交换节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于空闲 状态时, 所述处理单元将所述第二路光信号通过所述弯曲直通波导发送给所述 交换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输 波导发送所述第二路光信号给所述目的路由节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于忙碌 状态时, 所述处理单元控制光延迟波导环对应的第一光开关和第二光开关, 将 所述第二路光信号緩存在所述光延迟波导环中, 直到所述目的路由节点所需输 出端口变为空闲状态时, 控制所述光延迟波导环对应的第二光开关, 将所述光 延迟波导环中緩存的所述第二路光信号通过所述弯曲直通波导发送给所述交 换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输波 导发送所述第二路光信号给所述目的路由节点。
结合第一方面的第二种可能, 在第一方面的第四种可能的实现方式中, 所 述光緩存器还包括光放大开关;
所述分束器的第一输出端连接所述光放大开关的一端, 所述光放大开关的 另一端连接所述弯曲直通波导的输入端;
所述分束器发送所述第二路光信号给所述光放大开关, 所述光放大开关将 所述第二路光信号进行放大, 并将所述放大后的第二路光信号发送给所述弯曲 直通波导。 第二方面, 本发明提供了一种光信号传输的方法, 其特征在于, 所述方法 包括:
通过光緩存器接收光信号, 解析所述光信号得到目的路由节点的标识; 根据所述目的路由节,、的标识判断所述目的路由节点所需输出端口在当 前处于空闲状态还是忙碌状态;
如果判断出处于忙碌状态, 将所述光信号緩存在所述光緩存器中, 直到所 述目的路由节点所需输出端口变为空闲状态时, 通过所述目的路由节点所需输 出端口对应的传输波导将所述光緩存器中緩存的所述光信号发送给所述目的 路由节点;
如果判断出处于空闲状态, 通过所述目的路由节点所需输出端口对应的传 输波导发送所述光信号给所述目的路由节点。
结合第二方面, 在第二方面的第一种可能的实现方式中, 所述根据所述目 的路由节点的标识判断所述目的路由节点所需输出端口在当前处于空闲状态 还是忙碌状态, 包括:
根据所述目的路由节,、的标识判断所述目的路由节点所需输出端口在当 前是否有传输任务;
如果判断出没有传输任务, 确定出所述目的路由节点所需输出端口在当前 处于空闲状态;
如果判断出有传输任务,确定出所述目的路由节点所需输出端口在当前处 于忙碌状态。 结合第二方面, 在第二方面的第二种可能的实现方式中, 所述解析所述光 信号得到目的路由节点的标识, 包括:
通过分束器对所述光信号进行分束, 得到第一路光信号;
将所述第一路光信号转换为第一路电信号, 并解析所述第一路电信号得到 目的路由节点的标识。
结合第二方面, 在第二方面的第三种可能的实现方式中, 所述将所述光信 号緩存在所述光緩存器中, 包括:
通过分束器对所述光信号进行分束, 得到第二路光信号;
将所述第二路光信号输入到弯曲直通波导, 以使所述弯曲直通波导减緩所 述第二路光信号的传输速率;
选择光延迟波导环,控制所述光延迟波导环对应的第一光开关和第二光开 关, 将所述弯曲直通波导中的所述第二路光信号緩存在所述光延迟波导环中。
结合第二方面的第三种可能, 在第二方面的第四种可能的实现方式中, 所 述控制所述光延迟波导环对应的第一光开关和第二光开关,将所述光信号緩存 在所述第二路光延迟波导环中, 包括:
控制所述光延迟波导环对应的第一光开关开通以及所述光延迟波导环对 应的第二光开关关闭,使所述弯曲直通波导中的所述第二路光信号进入所述光 延迟波导环中;
当所述第二路光信号完全进入所述光延迟波导环中时,控制所述光延迟波 导环对应的第一光开关关闭,使所述第二路光信号在所述光延迟波导环中循环 存储。
结合第二方面的第三种可能, 在第二方面的第五种可能的实现方式中, 所 述通过所述目的路由节点所需输出端口对应的传输波导将所述光緩存器中緩 存的所述光信号发送给所述目的路由节点, 包括:
控制所述光延迟波导环对应的第二光开关开通,使所述第二路光信号从所 述光延迟波导环中进入弯曲直通波导, 并由所述弯曲直通波导传输给所述目的 路由节点所需输出端口对应的传输波导;
通过所述目的路由节点所需输出端口对应的传输波导将所述第二路光信 号发送给所述目的路由节点。
结合第二方面的第三种可能, 在第二方面的第六种可能的实现方式中, 所 述将所述第二路光信号输入到弯曲直通波导之前, 所述方法还包括: 对所述第二路光信号进行放大。
结合第二方面, 在第二方面的第七种可能的实现方式中, 所述通过所述目 的路由节点所需输出端口对应的传输波导发送所述光信号给所述目的路由节 点, 包括:
如果所述光緩存器中不存在需要传输给所述目的路由节点的其他光信号, 发送所述光信号给所述目的路由节点;
如果所述光緩存器中存在需要传输给所述目的路由节点的其他光信号, 将 所述光信号緩存在所述光緩存器中, 获取所述其他光信号, 通过所述目的路由 节点所需输出端口对应的传输波导发送所述其他光信号给所述目的路由节点; 当所述其他光信号发送完成后,通过所述目的路由节点所需输出端口对应的传 输波导将緩存的所述光信号发送给所述目的路由节点。
结合第二方面,在第二方面的第八种可能的实现方式中,所述方法还包括: 如果所述光信号緩存失败, 发送丟包消息给所述光信号的信号源, 以使所 述信号源重新发送所述光信号。 第三方面, 本发明提供了一种光交换网络, 所述光交换网络包括: 多个路 由节点和传输波导; 所述路由节点为第一方面所述的路由节点;
所述多个路由节点通过所述传输波导互连, 构成需要的拓朴结构。
结合第三方面, 在第三方面的第一种可能的实现方式中, 所述光交换网络 还包括: 电总线;
所述多个路由节点通过所述电总线和外接设备相连。
在本发明实施例中,路由节点由交换节点和光緩存器组成,所需器件较少, 易于集成在单个芯片上; 并且, 路由节点中由光緩存器进行解析得到目的路由 节点的标识, 由交换节点进行判断目的路由节点所需输出端口在当前处于空闲 状态还是忙碌状态, 从而实现了控制和仲裁分开处理的方式, 简化了交换节点 和光緩存器的电路复杂度。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 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是本背景技术中提供的一种路由节点的结构示意图;
图 2是本发明实施例 1提供的一种路由节点的结构示意图;
图 3是本发明实施例 1提供的一种光緩存器的结构示意图;
图 4是本发明实施例 2提供的一种光信号传输的方法流程图;
图 5是本发明实施例 3提供的一种光信号传输的方法流程图;
图 6是本发明实施例 4提供的一种光交换网络的结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。 实施例 1
本发明实施例提供了一种路由节点。 参见图 2, 其中, 该路由节点包括: 至少一个光緩存器 201、交换节点 202和至少一个传输波导 203、光緩存器 201 的数目和传输波导 203的数目相同;
至少一个光緩存器 201中的每个光緩存器 201的输出端连接交换节点 202 的输入端; 至少一个传输波导 203中的每个传输波导 203连接交换节点 202的 输出端;
光緩存器 201接收光信号, 解析光信号得到目的路由节点的标识; 发送目 的路由节点的标识给交换节点 202;
交换节点 202根据目的路由节点的标识判断目的路由节点所需输出端口在 当前处于空闲状态还是忙碌状态, 如果判断出处于忙碌状态, 则控制光緩存器 201緩存光信号, 直到目的路由节点所需输出端口变为空闲状态时, 通过目的 路由节点所需输出端口对应的传输波导 203将光緩存器 201中緩存的光信号发 送给目的路由节点; 如果判断出处于空闲状态, 则通过目的路由节点所需输出 端口对应的传输波导 203将光緩存器 201接收的光信号发送给目的路由节点。
优选的, 交换节点 202根据目的路由节点的标识判断目的路由节点所需输 出端口在当前是否有传输任务; 如果判断出没有传输任务, 确定出目的路由节 点所需输出端口在当前处于空闲状态; 发送传输指令给光緩存器 201 ; 光緩存 器 201接收交换节点 202发送的传输指令, 并根据该传输指令发送接收的光信 号给交换节点 202; 交换节点 202接收光緩存器 201发送的接收的光信号, 并 发送该接收的光信号给目的路由节点所需输出端口对应的传输波导 203; 目的 路由节点所需输出端口对应的传输波导 203接收交换节点 202发送的接收的光 信号, 并发送接收的光信号给目的路由节点。
如果判断出有传输任务, 交换节点 202确定出目的路由节点所需输出端口 在当前处于忙碌状态; 发送存储指令给光緩存器 201, 光緩存器 201接收交换 节点 202发送的存储指令, 并根据该存储指令将该光信号緩存在光緩存器 201 中。 直到交换节点 202确定出目的路由节点所需输出端口变为空闲状态时, 交 换节点 202发送传输指令给光緩存器 201 ; 光緩存器 201接收交换节点 202发 送的传输指令, 并获取緩存的光信号, 发送緩存的光信号给交换节点 202; 交 换节点 202接收光緩存器 201发送的緩存的光信号, 并发送给緩存的光信号给 目的路由节点所需输出端口对应的传输波导 203; 目的路由节点所需输出端口 对应的传输波导 203接收交换节点 202发送的緩存的光信号, 并发送给目的路 由节点。
优选的, 交换节点 202根据信号源的标识和目的路由节点的标识生成传输 任务, 将该传输任务添加到任务链表中, 并判断该传输任务是否和任务链表中 的除该传输任务之外的其他传输任务相同, 如果相同, 确定出目的路由节点所 需输出端口在当前有传输任务; 如果不相同, 确定出目的路由节点所需输出端 口在当前没有传输任务。
其中, 当前是指当前时隙。
进一步地, 交换节点 202包括: 仲裁器和交换开关;
其中, 每个光緩存器 201的输出端连接仲裁器的输入端, 仲裁器的输出端 连接交换开关的一端, 每个緩存器 201的输出端还连接交换开关的一端, 交换 开关的另一端连接每个传输波导 203;
仲裁器接收光緩存器 201发送的目的路由节点的标识,根据目的路由节点 的标识判断目的路由节点所需输出端口在当前处于空闲状态还是忙碌状态; 如 果判断出处于忙碌状态, 控制光緩存器 201緩存光信号, 直到目的路由节点所 需输出端口变为空闲状态时, 控制交换开关通过传输波导 203将光緩存器 201 中緩存的光信号发送给目的路由节点; 如果判断出处于空闲状态, 控制交换开 关通过传输波导 203将光緩存器 201接收的光信号发送给目的路由节点。
优选的,仲裁器根据目的路由节点的标识判断目的路由节点所需输出端口 在当前是否有传输任务, 如果判断出没有传输任务, 确定出目的路由节点所需 输出端口在当前处于空闲状态; 发送传输指令给光緩存器 201和交换开关; 光 緩存器 201接收仲裁器发送的传输指令, 并根据该传输指令发送接收的光信号 给交换开关; 交换开关接收仲裁器发送的传输指令以及光緩存器 201发送的接 收的光信号,根据该传输指令打开目的路由节点所需输出端口对应的交换开关, 通过目的节点所需输出端口对应的传输波导 203将光緩存器 201接收的光信号 发送给目的路由节点。
如果判断出有传输任务,确定出目的路由节点所需输出端口在当前处于忙 碌状态, 发送存储指令给光緩存器 201; 光緩存器 201接收仲裁器发送的存储 指令, 并根据该存储指令将该光信号緩存在光緩存器 201中。 直到仲裁器确定 出目的路由节点所需输出端口变为空闲状态时, 仲裁器发送传输指令给光緩存 器 201和交换开关; 光緩存器 201接收仲裁器发送的传输指令, 并获取緩存的 光信号, 发送緩存的光信号给交换开关; 交换开关接收仲裁器发送的传输指令 以及光緩存器 201发送的緩存的光信号,根据该传输指令打开目的路由节点所 需输出端口对应的交换开关, 通过目的节点所需输出端口对应的传输波导 203 将緩存的光信号发送给目的路由节点。
进一步地,参见图 3,光緩存器 201包括:分束器 2011、弯曲直通波导 2012、 控制器 2013、 多个光延迟波导环 2014、 多个光延迟波导环 2014中的每个光延 迟波导环 2014对应的第一光开关 2015和第二光开关 2016,弯曲直通波导 2012 的形状为 n形;
其中, 分束器 2011的第一输出端连接弯曲直通波导 2012的输入端, 弯曲 直通波导 2012的输出端连接交换节点 202; 分束器 2011的第二输出端连接控 制器 2013的输入端, 控制器 2013的输出端连接每个光延迟波导环 2014对应 的第一光开关 2015和第二光开关 2016;每个光延迟波导环 2014通过各自对应 的第一光开关 2015和第二光开关 2016与弯曲直通波导 2012的两臂相连;
分束器 2011接收光信号, 将光信号分为第一路光信号和第二路光信号, 发送第一路光信号给控制器 2013, 发送第二路光信号给弯曲直通波导 2012; 控制器 2013解析第一路光信号得到目的路由节点的标识, 发送目的路由节点 的标识给交换节点 202;
当交换节点 202判断出目的路由节点所需输出端口在当前处于空闲状态时, 控制器 2013将第二路光信号通过弯曲直通波导 2012发送给交换节点 202, 以 使交换节点 202通过目的路由节点所需输出端口对应的传输波导 203发送第二 路光信号给目的路由节点;
当交换节点 202判断出目的路由节点所需输出端口在当前处于忙碌状态时, 控制器 2013选择光延迟波导环 2014,控制光延迟波导环 2014对应的第一光开 关 2015和第二开关, 将第二路光信号緩存在光延迟波导环 2014中, 直到目的 路由节点所需输出端口变为空闲状态时, 控制光延迟波导环 2014对应的第二 光开关 2016, 将光延迟波导环 2014中緩存的第二路光信号通过弯曲直通波导 2012发送给交换节点 202, 以使交换节点 202通过目的路由节点所需输出端口 对应的传输波导 203发送第二路光信号给目的路由节点。
优选的, 当交换节点 202判断出目的路由节点所需输出端口在当前处于忙 碌状态时, 控制器 2013随机选择一个空闲的光延迟波导环 2014, 或者选择一 个离控制器 2013距离最近的一个空闲的光延迟波导环 2014; 控制该光延迟波 导环 2014对应的第一光开关 2015开通以及第二光开关 2016关闭, 使第二路 光信号进入该光延迟波导环 2014 中; 当该第二路光信号完全进入该光延迟波 导环 2014时, 控制光延迟波导环 2014对应的第一光开关 2015关闭, 使该第 二路光信号在该光延迟波导环 2014中循环存储。
优选的, 当交换节点 202判断出目的路由节点所需输出端口变为空闲状态 时, 控制器 2013控制光延迟波导环 2014对应的第二光开关 2016开通, 使光 延迟波导环 2014中緩存的第二路光信号进入弯曲直通波导 2012, 并通过弯曲 直通波导 2012发送给交换节点 202。
其中, 弯曲直通波导 2012 包括慢光效应波导, 该慢光效应波导能够减緩 第二路光信号的传输速率,从而能够给交换节点 202足够的时间去判断目的路 由节点所需输出端口在当前处于空闲状态还是忙碌状态。
进一步地, 控制器 2013包括电光转换单元和处理单元;
分束器 2011 的第二输出端连接电光转换单元的输入端; 电光转换单元的 输出端连接处理单元的输入端,处理单元的输出端连接交换节点 202的输入端; 电光转换单元接收分束器 2011发送的第一路光信号, 将第一路光信号转 换为第一路电信号, 发送第一路电信号给处理单元; 处理单元解析第一路电信 号得到目的路由节点的标识, 发送目的路由节点的标识给交换节点 202;
当交换节点 202判断出目的路由节点所需输出端口在当前处于空闲状态时, 处理单元将第二路光信号通过弯曲直通波导 2012发送给交换节点 202,以使交 换节点 202通过目的路由节点所需输出端口对应的传输波导 203发送第二路光 信号给目的路由节点;
当交换节点 202判断出目的路由节点所需输出端口在当前处于忙碌状态时, 处理单元控制光延迟波导环 2014对应的第一光开关 2015和第二光开关 2016, 将第二路光信号緩存在光延迟波导环 2014中, 直到目的路由节点所需输出端 口变为空闲状态时, 控制光延迟波导环 2014对应的第二光开关 2016, 将光延 迟波导环 2014中緩存的第二路光信号通过弯曲直通波导 2012发送给交换节点 202, 以使交换节点 202通过目的路由节点所需输出端口对应的传输波导 203 发送第二路光信号给目的路由节点。
优选的, 当交换节点 202判断出目的路由节点所需输出端口在当前处于忙 碌状态时, 处理单元发送开通指令给光延迟波导环 2014 对应的第一光开关 2015, 发送关闭指令给光延迟波导环 2014对应的第二光开关 2016; 光延迟波 导环 2014对应的第一光开关 2015接收处理单元发送的开通指令, 并根据该开 通指令打开弯曲直通波导 2012和光延迟波导环 2014的一端之间的连接, 光延 迟波导环 2014对应的第二光开关 2016接收处理单元发送的关闭指令, 并根据 该关闭指令关闭光延迟波导环 2014的另一端与弯曲直通波导 2012之间的连接, 使第二路光信号进入光延迟波导环 2014 中; 当第二路光信号完全进入光延迟 波导环 2014时, 发送关闭指令给光延迟波导环 2014对应的第一光开关 2015; 光延迟波导环 2014对应的第一光开关 2015接收处理单元发送的关闭指令, 并 根据该关闭指令关弯曲直通波导 2012与光延迟波导环 2014之间的连接,使第 二路光信号在光延迟波导环 2014中循环存储。
当交换节点 202确定出目的路由节点所需输出端口变为空闲状态时,发送 打开指令给光延迟波导环 2014对应的第二光开关 2016; 光延迟波导环 2014 对应的第二光开关 2016接收处理单元发送的打开指令, 并根据该打开指令打 开弯曲直通波导 2012与光延迟波导环 2014的另一端之间的连接, 将光延迟波 导环 2014中緩存的第二路光信号通过弯曲直通波导 2012发送给交换节点 202, 以使交换节点 202通过目的路由节点所需输出端口对应的传输波导 203发送第 二路光信号给目的路由节点。
进一步地, 光緩存器 201还包括光放大开关 2017;
分束器 2011的第一输出端连接光放大开关 2017的一端,光放大开关 2017 的另一端连接弯曲直通波导 2012的输入端;
分束器 2011发送第二路光信号给光放大开关 2017,光放大开关 2017将第 二路光信号进行放大, 并将放大后的第二路光信号发送给弯曲直通波导 2012。
其中, 第二路光信号在传输过程中会有能量损耗, 为了补偿损耗, 在该緩 存器 201中设置光放大开关 2017,将第二路光信号输入到弯曲直通波导 2012, 对第二路光信号进行放大,将放大后的第二路光信号输入到弯曲直通波导 2012。
在本发明实施例中,路由节点由交换节点和光緩存器组成,所需器件较少, 易于集成在单个芯片上; 并且, 路由节点中由光緩存器进行解析得到目的路由 节点的标识, 由交换节点进行判断目的路由节点所需输出端口在当前处于空闲 状态还是忙碌状态, 从而实现了控制和仲裁分开处理的方式, 简化了交换节点 和光緩存器的电路复杂度。 实施例 2
本发明实施例提供了一种光信号的传输的方法。 参见图 4, 其中, 该方法 包括:
步骤 301 : 通过光緩存器接收光信号, 解析光信号得到目的路由节点的标 识;
步骤 302: 根据目的路由节点的标识判断目的路由节点所需输出端口在当 前处于空闲状态还是忙碌状态;
步骤 303: 如果判断出处于忙碌状态, 将光信号緩存在光緩存器中, 直到 目的路由节点所需输出端口变为空闲状态时, 通过目的路由节点所需输出端口 对应的传输波导将光緩存器中緩存的光信号发送给目的路由节点;
步骤 304: 如果判断出处于空闲状态, 通过目的路由节点所需输出端口对 应的传输波导发送光信号给目的路由节点。
在本发明实施例中, 如果目的路由节点所需输出端口在当前处于忙碌状态, 将光信号緩存在光緩存器中, 直到目的路由节点所需输出端口变为空闲状态时, 通过目的路由节点所需输出端口对应的传输波导发送緩存的光信号给目的路 由节点, 从而提高了网络资源的利用率。 实施例 3
本发明实施例提供了一种光信号传输的方法。 参见图 5, 其中, 该方法包 括:
步骤 401 : 通过光緩存器接收光信号, 解析光信号得到目的路由节点的标 识;
信号源发送光信号给本路由节点, 本路由节点通过光緩存器接收信号源发 送的光信号。
其中, 信号源可以为除本路由节点之外的其他路由节点, 信号源也可以为 能够发送光信号的处理器等。
其中, 解析光信号得到目的路由节点的标识的步骤包括以下步骤( 1 )和 ( 2 ):
( 1 ) : 通过分束器对光信号进行分束, 得到第一路光信号;
通过光緩存器接收到光信号后, 将光信号发送给分束器, 分束器接收光信 号, 并将光信号分为第一路光信号和第二路光信号, 发送第一路光信号给控制 器, 以使控制器根据第一路光信号判断目的路由节点所需输出端口在当前处于 空闲状态还是忙碌状态; 发送第二路光信号给弯曲直通波导, 以使弯曲直通波 导减緩第二路光信号的传输速率,从而保证有足够的时间去判断目的路由节点 所需输出端口在当前处于空闲状态还是忙碌状态。
其中, 需要说明的是, 弯曲直通波导包括慢光效应波导, 该慢光效应波导 能够减緩第二路光信号的传输速率。
其中, 第二路光信号在传输过程中会有能量损耗, 为了补偿损耗, 在该緩 存器中设置光放大开关, 将第二路光信号输入到弯曲直通波导, 对第二路光信 号进行放大, 将放大后的第二路光信号输入到弯曲直通波导。
( 2 ) : 将第一路光信号转换为第一路电信号, 并解析第一路电信号得到目 的路由节点的标识。
在本步骤中, 控制器接收第一路光信号, 通过控制器中包括的电光转换单 元将第一路光信号转换为第一路电信号; 通过控制器中包括的处理单元解析第 一路电信号得到目的路由节点的标识。
其中, 目的路由节点的标识可以为目的路由节点的名称等。
进一步地,控制器根据目的路由节点的标识和本路由节点的标识生成传输 请求, 发送该传输请求给交换节点, 执行步骤 402。
步骤 402: 根据目的路由节点的标识判断目的路由节点所需输出端口在当 前处于空闲状态还是忙碌状态; 如果判断出处于忙碌状态, 执行步骤 403, 如 果判断出处于空闲状态, 执行步骤 405;
其中, 步骤 402可以包括以下步骤( 1 )至 ( 3 ):
( 1 ): 根据目的路由节点的标识判断目的路由节点所需输出端口在当前是 否有传输任务;
交换节点接收控制器发送的传输请求, 并通过仲裁器判断目的路由节点所 需输出端口在当前是否有传输任务。
其中, 仲裁器判断目的路由节点所需输出端口在当前是否有传输任务的步 骤可以为:
仲裁器将该传输任务添加到任务链表中, 并判断该传输任务和任务链表中 除该传输任务之外的其他传输任务是否存在相同, 如果相同, 确定出目的路由 节点所需输出端口在当前有传输任务; 如果不相同, 确定出目的路由节点所需 输出端口在当前没有传输任务。
如, 该传输任务为: 路由节点 1到路由节点 2; 任务链表中存在的任务包 括: 路由节点 1到路由节点 2, 路由节点 1到路由节点 3, 以及路由节点 1到 路由节点 4; 将该传输任务添加到任务链表之后, 该任务链表中的任务包括: 路由节点 1到路由节点 2,路由节点 1到路由节点 3,路由节点 1到路由节点 4, 以及路由节点 1到路由节点 2。 从头查询整个任务链表, 仲裁器确定出任务链 表中的第一个任务和第四个任务相同, 确定出目的路由节点所需输出端口在当 前有传输任务。
( 2 ) : 如果判断出没有传输任务, 确定出目的路由节点所需输出端口在当 前处于空闲^ 态;
( 3 ) : 如果判断出有传输任务, 确定出目的路由节点所需输出端口在当前 处于忙碌状态。
步骤 403: 选择光延迟波导环, 控制光延迟波导环对应的第一光开关和第 二光开关, 将弯曲直通波导中的第二路光信号緩存在光延迟波导环中;
其中, 步骤 403可以包括以下步骤( 1 )和( 2 ):
( 1 ): 选择光延迟波导环, 控制光延迟波导环对应的第一光开关开通以及 光延迟波导环对应的第二光开关关闭,使弯曲直通波导中的第二路光信号进入 光延迟波导环中;
具体地, 控制器可以随机选择一个空闲的光延迟波导, 也可以选择离控制 器最近的一个空闲的光延迟波导环,发送打开指令给光延迟波导环对应的第一 光开关, 光延迟波导环对应的第一光开关接收控制器发送的打开指令, 并根据 该打开指令开通光延迟波导环与弯曲直通波导之间的连接; 控制器发送关闭指 令给光延迟波导环对应的第二开关, 光延迟波导环对应的第二开关接收控制器 发送的关闭指令, 并根据该关闭指令关闭光延迟波导环与弯曲直通波导之间的 连接, 弯曲直通波导中的第二路光信号就会进入光延迟波导环中。
进一步地,将发送给目的路由节点的第二路光信号緩存在光延迟波导环之 后, 将光延迟波导环的标识和目的路由节点所需输出端口的标识存储在光延迟 波导环的标识和目的路由节点所需输出端口的标识的对应关系中。
进一步地, 当从光延迟波导环中获取该第二路光信号时, 根据目的路由节 点所需输出端口的标识,从光延迟波导环的标识和目的路由节点所需输出端口 的标识的对应关系中获取该第二路光信号存储的光延迟波导环的标识, 并根据 该获取的光延迟波导环的标识从该光延迟波导环中获取第二路光信号。
其中, 光延迟波导环的标识可以为光延迟波导环的编号, 或者光延迟波导 环的位置等。
如果緩存器中没有空闲的光延迟波导环, 则控制器将该光信号丟弃, 并发 送丟包消息给光信号的信号源, 以使信号源在下一个时隙时重新发送该光信号。
其中, 光延迟波导环不仅能够存储第二路光信号, 还能够减緩第二路光信 号的传输速率。
( 2 ): 当第二路光信号完全进入光延迟波导环中时, 控制光延迟波导环对 应的第一光开关关闭, 使第二路光信号在光延迟波导环中循环存储。
具体地, 当第二路光信号完全进入光延迟波导环中时, 控制器发送关闭指 令给光延迟波导环对应的第一开关; 光延迟波导环对应的第一开关接收控制器 发送的关闭指令, 并根据该关闭指令关闭光延迟波导环与弯曲直通波导之间的 连接, 第二路光信号就会在光延迟波导环中循环存储。
其中,控制器控制光延迟波导环对应的第一光开关开通以及光延迟波导环 对应的第二光开关关闭,使弯曲直通波导中的第二路光信号进入光延迟波导环 中时开始计时, 预设时间后, 确定出第二光信号完全进入光延迟波导环中。
其中, 预设时间可以根据需要进行设置并更改, 在本发明实施例中, 对预 设时间不作具体限定。
步骤 404: 当目的路由节点所需输出端口变为空闲状态时, 通过目的路由 节点所需输出端口对应的传输波导将光緩存器中緩存的光信号发送给目的路 由节点, 结束。
其中, 步骤 404包括以下步骤( 1 )和( 2 ):
( 1 ) : 控制光延迟波导环对应的第二光开关开通, 使第二路光信号从光延 迟波导环中进入弯曲直通波导, 并由弯曲直通波导传输给目的路由节点所需输 出端口对应的传输波导;
具体地, 控制器根据目的路由节点所需输出端口的标识, 从光延迟波导环 的标识和目的路由节点所需输出端口的标识的对应关系中, 获取光延迟波导环 的标识, 根据该光延迟波导环的标识, 发送打开指令给光延迟波导环对应的第 二光开关, 光延迟波导环对应的第二开关接收控制器发送的打开指令, 并根据 号会从光延迟波导换中输出并进入弯曲直通波导中, 弯曲直通波导连通目的路 由节点所需输出端口对应的传输波导, 第二路光信号会通过弯曲直通波导传输 给目的路由节点所需输出端口对应的传输波导。
( 2 ) : 通过目的路由节点所需输出端口对应的传输波导将第二路光信号发 送给目的路由节点。
步骤 405: 通过目的路由节点所需输出端口对应的传输波导发送光信号给 目的路由节点。
其中, 步骤 405可以包括以下步骤( 1 )至 (4 ):
( 1 ): 判断该光緩存器中是否存在需要传输给目的路由节点的其他光信号, 如果不存在执行步骤( 2 ), 如果存在执行步骤( 3 );
具体地, 仲裁器发送反馈信息给控制器, 该反馈信息为执行该传输任务或 者存储该传输任务; 控制器接收仲裁器发送的反馈信息, 并判断该光緩存器中 是否存在需要传输给目的路由节点的其他光信号, 如果不存在执行步骤(2 ), 如果存在执行步骤( 3 )。
如, 该传输任务为: 路由节点 1到路由节点 2, 该反馈信息为传输路由节 点 1到路由节点 2的光信号; 控制器判断緩存器中是否存在需要传输给路由节 点 2的其他光信号, 如果存在, 该先緩冲该光信号, 传输该其他光信号; 如果 不存在, 传输该光信号。
( 2 ) : 发送该光信号给目的路由节点, 结束;
( 3 ) : 将该光信号緩存在光緩存器中, 获取其他光信号, 通过目的路由节 点所需输出端口对应的传输波导发送其他光信号给目的路由节点; 其中,将该光信号緩存在光緩存器中,可以包括以下步骤(3-1 )和(3-2 ): ( 3-1 ): 选择光延迟波导环, 控制该光延迟波导环对应的第一光开关和第 二光开关, 将该光信号緩存在光延迟波导环中;
本步骤和步骤 403的 ( 1 )相同, 在此不再赘述。
( 3-2 ): 从该光緩存器中获取该其他光信号;
根据目的路由节点所需输出端口的标识,从光延迟波导环的标识和目的路 由节点所需输出端口的标识的对应关系中, 获取该其他光信号存储的光延迟波 导环的标识, 根据该获取的光延迟波导环的标识, 控制该获取的光延迟波导环 对应的第二开关开通,使该其他光信号从获取的光延迟波导环中进入弯曲直通 波导, 并由弯曲直通波导传输给目的路由节点所需输出端口对应的传输波导。
( 4 ): 当其他光信号发送完成后, 通过目的路由节点所需输出端口对应的 传输波导将緩存的该光信号发送给目的路由节点。
本步骤和步骤 404相同, 在此不再赘述。
在本发明实施例中, 如果目的路由节点所需输出端口在当前处于忙碌状态, 将光信号緩存在光緩存器中, 直到目的路由节点所需输出端口变为空闲状态时, 通过目的路由节点所需输出端口对应的传输波导发送緩存的光信号给目的路 由节点, 从而提高了网络资源的利用率。 实施例 4
本发明实施例提供了一种光交换网络。 参见图 6, 该光交换网络包括多个 路由节点 501和传输波导 502;
多个路由节点通过传输波导互连, 构成需要的拓朴结构。
进一步地, 该光交换网络还包括: 电总线 503;
多个路由节点通过电总线 503和外接设备相连。
其中, 需要的拓朴结构可以为 crassba (交叉开关矩阵)、 mesh (无线网格 网络)和 torus (圓环面)等拓朴结构。 外接设备可以为处理器等。
在本发明实施例中,路由节点由交换节点和光緩存器组成,所需器件较少, 易于集成在单个芯片上; 并且, 路由节点中由光緩存器进行解析得到目的路由 节点的标识, 由交换节点进行判断目的路由节点所需输出端口在当前处于空闲 状态还是忙碌状态, 从而实现了控制和仲裁分开处理的方式, 简化了交换节点 和光緩存器的电路复杂度。 领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过 硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储于 一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘或 光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种路由节点, 其特征在于, 所述路由节点包括:
至少一个光緩存器、 交换节点和至少一个传输波导、 所述光緩存器的数目 和所述传输波导的数目相同;
所述至少一个光緩存器中的每个光緩存器的输出端连接所述交换节点的 输入端; 所述至少一个传输波导中的每个传输波导连接所述交换节点的输出端; 所述光緩存器接收光信号, 解析所述光信号得到目的路由节点的标识; 发 送所述目的路由节点的标识给所述交换节点;
所述交换节点根据所述目的路由节点的标识判断所述目的路由节点所需 输出端口在当前处于空闲状态还是忙碌状态, 如果判断出处于忙碌状态, 则控 制所述光緩存器緩存所述光信号, 直到所述目的路由节点所需输出端口变为空 闲状态时, 通过所述目的路由节点所需输出端口对应的传输波导将所述光緩存 器中緩存的所述光信号发送给所述目的路由节点; 如果判断出处于空闲状态, 则通过所述目的路由节点所需输出端口对应的传输波导将所述光緩存器接收 的所述光信号发送给所述目的路由节点。
2、 如权利要求 1 所述的路由节点, 其特征在于, 所述交换节点包括: 仲 裁器和交换开关;
所述每个光緩存器的输出端连接所述仲裁器的输入端, 所述仲裁器的输出 端连接所述交换开关的一端, 所述每个光緩存器的输出端还连接所述交换开关 的一端, 所述交换开关的另一端连接所述每个传输波导;
所述仲裁器接收所述光緩存器发送的所述目的路由节点的标识,根据所述 目的路由节点的标识判断所述目的路由节点所需输出端口在当前处于空闲状 态还是忙碌状态; 如果判断出处于忙碌状态, 控制所述光緩存器緩存所述光信 号, 直到所述目的路由节点所需输出端口变为空闲状态时, 控制所述交换开关 通过所述传输波导将所述光緩存器中緩存的所述光信号发送给所述目的路由 节点; 如果判断出处于空闲状态, 控制所述交换开关通过所述传输波导将所述 光緩存器接收的所述光信号发送给所述目的路由节点。
3、 如权利要求 1所述的路由节点, 其特征在于, 所述光緩存器包括: 分束器、 弯曲直通波导、 控制器、 多个光延迟波导环、 所述多个光延迟波 导环中的每个光延迟波导环对应的第一光开关和第二光开关, 所述弯曲直通波 导的形状为 n形;
所述分束器的第一输出端连接所述弯曲直通波导的输入端, 所述弯曲直通 波导的输出端连接所述交换节点; 所述分束器的第二输出端连接所述控制器的 输入端, 所述控制器的输出端连接所述每个光延迟波导环对应的第一光开关和 第二光开关; 所述每个光延迟波导环通过各自对应的第一光开关和第二光开关 与所述弯曲直通波导的两臂相连;
所述分束器接收光信号,将所述光信号分为第一路光信号和第二路光信号, 发送所述第一路光信号给控制器,发送所述第二路光信号给所述弯曲直通波导; 所述控制器解析所述第一路光信号得到所述目的路由节点的标识,发送所述目 的路由节点的标识给所述交换节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于空闲 状态时, 所述控制器将所述第二路光信号通过所述弯曲直通波导发送给所述交 换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输波 导发送所述第二路光信号给所述目的路由节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于忙碌 状态时, 所述控制器选择光延迟波导环, 控制所述光延迟波导环对应的第一光 开关和第二开关, 将所述第二路光信号緩存在所述光延迟波导环中, 直到所述 目的路由节点所需输出端口变为空闲状态时,控制所述光延迟波导环对应的第 二光开关, 将所述光延迟波导环中緩存的所述第二路光信号通过所述弯曲直通 波导发送给所述交换节点, 以使所述交换节点通过所述目的路由节点所需输出 端口对应的传输波导发送所述第二路光信号给所述目的路由节点。
4、 如权利要求 3所述的路由节点, 其特征在于, 所述控制器包括电光转 换单元和处理单元;
所述分束器的第二输出端连接所述电光转换单元的输入端; 所述电光转换 单元的输出端连接所述处理单元的输入端, 所述处理单元的输出端连接所述交 换节点的输入端;
所述电光转换单元接收所述分束器发送的所述第一路光信号, 将所述第一 路光信号转换为第一路电信号, 发送所述第一路电信号给所述处理单元; 所述 处理单元解析所述第一路电信号得到所述目的路由节点的标识,发送所述目的 路由节点的标识给所述交换节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于空闲 状态时, 所述处理单元将所述第二路光信号通过所述弯曲直通波导发送给所述 交换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输 波导发送所述第二路光信号给所述目的路由节点;
当所述交换节点判断出所述目的路由节点所需输出端口在当前处于忙碌 状态时, 所述处理单元控制光延迟波导环对应的第一光开关和第二光开关, 将 所述第二路光信号緩存在所述光延迟波导环中, 直到所述目的路由节点所需输 出端口变为空闲状态时, 控制所述光延迟波导环对应的第二光开关, 将所述光 延迟波导环中緩存的所述第二路光信号通过所述弯曲直通波导发送给所述交 换节点, 以使所述交换节点通过所述目的路由节点所需输出端口对应的传输波 导发送所述第二路光信号给所述目的路由节点。
5、 如权利要求 3所述的路由节点, 其特征在于, 所述光緩存器还包括光 放大开关;
所述分束器的第一输出端连接所述光放大开关的一端, 所述光放大开关的 另一端连接所述弯曲直通波导的输入端;
所述分束器发送所述第二路光信号给所述光放大开关, 所述光放大开关将 所述第二路光信号进行放大, 并将所述放大后的第二路光信号发送给所述弯曲 直通波导。
6、 一种光信号传输的方法, 其特征在于, 所述方法包括:
通过光緩存器接收光信号, 解析所述光信号得到目的路由节点的标识; 根据所述目的路由节,、的标识判断所述目的路由节点所需输出端口在当 前处于空闲状态还是忙碌状态;
如果判断出处于忙碌状态, 将所述光信号緩存在所述光緩存器中, 直到所 述目的路由节点所需输出端口变为空闲状态时, 通过所述目的路由节点所需输 出端口对应的传输波导将所述光緩存器中緩存的所述光信号发送给所述目的 路由节点; 如果判断出处于空闲状态, 通过所述目的路由节点所需输出端口对应的传 输波导发送所述光信号给所述目的路由节点。
7、 如权利要求 6所述的方法, 其特征在于, 所述根据所述目的路由节点 的标识判断所述目的路由节点所需输出端口在当前处于空闲状态还是忙碌状 态, 包括:
根据所述目的路由节,、的标识判断所述目的路由节点所需输出端口在当 前是否有传输任务;
如果判断出没有传输任务, 确定出所述目的路由节点所需输出端口在当前 处于空闲状态;
如果判断出有传输任务,确定出所述目的路由节点所需输出端口在当前处 于忙碌状态。
8、 如权利要求 6所述的方法, 其特征在于, 所述解析所述光信号得到目 的路由节点的标识, 包括:
通过分束器对所述光信号进行分束, 得到第一路光信号;
将所述第一路光信号转换为第一路电信号, 并解析所述第一路电信号得到 目的路由节点的标识。
9、 如权利要求 6所述的方法, 其特征在于, 所述将所述光信号緩存在所 述光緩存器中, 包括:
通过分束器对所述光信号进行分束, 得到第二路光信号;
将所述第二路光信号输入到弯曲直通波导, 以使所述弯曲直通波导减緩所 述第二路光信号的传输速率;
选择光延迟波导环,控制所述光延迟波导环对应的第一光开关和第二光开 关, 将所述所述弯曲直通波导中的所述第二路光信号緩存在所述光延迟波导环 中。
10、 如权利要求 9所述的方法, 其特征在于, 所述控制所述光延迟波导环 对应的第一光开关和第二光开关, 将所述光信号緩存在所述第二路光延迟波导 环中, 包括: 控制所述光延迟波导环对应的第一光开关开通以及所述光延迟波导环对 应的第二光开关关闭,使所述弯曲直通波导中的所述第二路光信号进入所述光 延迟波导环中;
当所述第二路光信号完全进入所述光延迟波导环中时,控制所述光延迟波 导环对应的第一光开关关闭,使所述第二路光信号在所述光延迟波导环中循环 存储。
11、 如权利要求 9所述的方法, 其特征在于, 所述通过所述目的路由节点 所需输出端口对应的传输波导将所述光緩存器中緩存的所述光信号发送给所 述目的路由节点, 包括:
控制所述光延迟波导环对应的第二光开关开通,使所述第二路光信号从所 述光延迟波导环中进入弯曲直通波导, 并由所述弯曲直通波导传输给所述目的 路由节点所需输出端口对应的传输波导;
通过所述目的路由节点所需输出端口对应的传输波导将所述第二路光信 号发送给所述目的路由节点。
12、 如权利要求 9所述的方法, 其特征在于, 所述将所述第二路光信号输 入到弯曲直通波导之前, 所述方法还包括:
对所述第二路光信号进行放大。
13、 如权利要求 6所述的方法, 其特征在于, 所述通过所述目的路由节点 所需输出端口对应的传输波导发送所述光信号给所述目的路由节点, 包括: 如果所述光緩存器中不存在需要传输给所述目的路由节点的其他光信号, 发送所述光信号给所述目的路由节点;
如果所述光緩存器中存在需要传输给所述目的路由节点的其他光信号, 将 所述光信号緩存在所述光緩存器中, 获取所述其他光信号, 通过所述目的路由 节点所需输出端口对应的传输波导发送所述其他光信号给所述目的路由节点; 当所述其他光信号发送完成后,通过所述目的路由节点所需输出端口对应的传 输波导将緩存的所述光信号发送给所述目的路由节点。
14、 如权利要求 6所述的方法, 其特征在于, 所述方法还包括: 如果所述光信号緩存失败, 发送丟包消息给所述光信号的信号源, 以使所 述信号源重新发送所述光信号。
15、 一种光交换网络, 其特征在于, 所述光交换网络包括: 多个路由节点 和传输波导; 所述路由节点为权利要求 1-5任一项所述的路由节点;
所述多个路由节点通过所述传输波导互连, 构成需要的拓朴结构。
16、 如权利要求 15所述的光交换网络, 其特征在于, 所述光交换网络还 包括: 电总线;
所述多个路由节点通过所述电总线和外接设备相连。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114629555A (zh) * 2022-03-28 2022-06-14 中国科学院计算技术研究所 一种数据转发装置及方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015100636A1 (zh) * 2013-12-31 2015-07-09 华为技术有限公司 一种环形光缓存器及光信号存入和读取方法
CN105763962B (zh) * 2014-12-18 2019-05-10 华为技术有限公司 光片上网络、光路由器和传输信号的方法
KR20230062829A (ko) 2020-08-06 2023-05-09 셀레스티얼 에이아이 인코포레이티드 결맞음 광 컴퓨팅 아키텍처
TW202401062A (zh) 2022-03-18 2024-01-01 美商天聖Ai公司 光學多晶粒互連橋接(omib)
CN117221212B (zh) * 2023-09-01 2024-04-09 北京邮电大学 片上光网络低拥塞路由方法及相关设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070242691A1 (en) * 2006-04-14 2007-10-18 Research And Industrial Cooperation Group Apparatus and method for transferring optical data in optical switching system
CN101778047A (zh) * 2010-02-09 2010-07-14 重庆邮电大学 解决光交换分组竞争的方法及光电混合缓存装置
CN102006226A (zh) * 2010-11-19 2011-04-06 福建星网锐捷网络有限公司 报文缓存管理方法、装置及网络设备
CN103107943A (zh) * 2013-02-22 2013-05-15 中国人民解放军国防科学技术大学 用于无缓存光交换网络的自适应路由方法
CN103685078A (zh) * 2013-12-11 2014-03-26 南京大学 基于光纤延时线的全光共享缓存路由器及其工作方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672172B1 (fr) * 1991-01-29 1993-06-04 Cit Alcatel Matrice de commutation photonique.
GB2352111A (en) * 1999-07-14 2001-01-17 Ericsson Telefon Ab L M IP telecommunications
US6810211B1 (en) * 1999-09-08 2004-10-26 Alcatel Preferred WDM packet-switched router architecture and method for generating same
KR100341394B1 (ko) * 1999-12-03 2002-06-22 오길록 광 패킷 스위치의 광 패킷 헤더 처리장치
US20020104058A1 (en) * 2000-12-06 2002-08-01 Yigal Rappaport Packet switched network having error correction capabilities of variable size data packets and a method thereof
US7313329B2 (en) * 2003-09-04 2007-12-25 The Regents Of The University Of California All optical variable buffer queue useful in optical packet networks
US7724733B2 (en) * 2005-03-31 2010-05-25 International Business Machines Corporation Interconnecting network for switching data packets and method for switching data packets
WO2008028125A2 (en) 2006-08-31 2008-03-06 The Trustees Of Columbia University In The City Of New York System and method for strong optical data
EP2252906B1 (en) * 2008-03-11 2018-05-23 Hewlett-Packard Enterprise Development LP Optoelectronic switches using on-chip optical waveguides
KR101142983B1 (ko) * 2010-10-07 2012-05-08 한국과학기술원 패킷 스위칭 시스템 및 방법
WO2015060820A1 (en) * 2013-10-22 2015-04-30 Hewlett-Packard Development Company, L.P. Hybrid circuit-packet switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070242691A1 (en) * 2006-04-14 2007-10-18 Research And Industrial Cooperation Group Apparatus and method for transferring optical data in optical switching system
CN101778047A (zh) * 2010-02-09 2010-07-14 重庆邮电大学 解决光交换分组竞争的方法及光电混合缓存装置
CN102006226A (zh) * 2010-11-19 2011-04-06 福建星网锐捷网络有限公司 报文缓存管理方法、装置及网络设备
CN103107943A (zh) * 2013-02-22 2013-05-15 中国人民解放军国防科学技术大学 用于无缓存光交换网络的自适应路由方法
CN103685078A (zh) * 2013-12-11 2014-03-26 南京大学 基于光纤延时线的全光共享缓存路由器及其工作方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114629555A (zh) * 2022-03-28 2022-06-14 中国科学院计算技术研究所 一种数据转发装置及方法

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