CN101304294B - Non-obstruction optical network apparatus as well as optical network node end-to-end service non-obstruction decussation method - Google Patents

Non-obstruction optical network apparatus as well as optical network node end-to-end service non-obstruction decussation method Download PDF

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CN101304294B
CN101304294B CN 200810068122 CN200810068122A CN101304294B CN 101304294 B CN101304294 B CN 101304294B CN 200810068122 CN200810068122 CN 200810068122 CN 200810068122 A CN200810068122 A CN 200810068122A CN 101304294 B CN101304294 B CN 101304294B
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wavelength
port
optical
direction
output
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CN101304294A (en
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王巍鑫
程智刚
赵勇
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中兴通讯股份有限公司
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Abstract

The invention discloses a block-free optical network device and a block-free crossing method for an end to end service of an optical network node. The method comprises the following steps: A. changing the wavelength of the input M directions N ports wavelength service by adopting a M channels N is multiplied by N ports wavelength assignment unit and obtaining an M directions N ports wavelength signal after the wavelength assignment; B. assigning the direction of the M directions N ports wavelength signal after the wavelength assignment by adopting a direction assignment unit and outputting the M directions N ports wavelength service after the direction assignment. The invention solves the flexible assignment and cross problem among the end to end service of the optical network node and wavelength and direction, thus realizing the assignment of any service to any length and any direction and improving the block-free crossing capacity of the optical network node.

Description

无阻光网络装置及光网络节点端到端业务无阻交叉方法 Unobstructed optical network device and an optical network node CROSS-end service unimpeded

技术领域 FIELD

[0001] 本发明涉及光通信技术的波分复用光通信系统以及自动交换光网络,尤其涉及一种无阻光网络装置及光网络节点端到端业务无阻交叉方法。 [0001] The present invention relates to a wavelength division multiplexed optical communication system, optical communication technology and in particular optical network device and a network node optical cross-end service unhindered relates to a method of automatically switched optical network unimpeded.

背景技术 Background technique

[0002] 近年来,随着多媒体、高清晰电视(HDTV)、第三代移动通信的发展,人们对传输带宽产生了巨大的需求,密集波分复用DWDM技术的广泛采用为网络提供了丰富的带宽资源, 但同时也使得网络交换节点成为网络发展的瓶颈。 [0002] In recent years, along with multimedia, high-definition television (HDTV), the development of third generation mobile communications, people had a huge bandwidth demand, Dense Wavelength Division Multiplexing DWDM technology widely used to provide a rich network bandwidth resources, but it also makes network switching nodes become the bottleneck of network development.

[0003] 同时,随着ASON(Automatic Switch Optical Network-自动交换光网络)技术的飞速发展,ASON系统设备实现的关键技术倍受各大运营商关注,光通信组网情况越来越复杂,如MESH(无线蜂窝网格网络,无线网状网络)组网方式及其跨环节点的业务调度,构建无阻塞的交叉矩阵实现传送平台的畅通。 The rapid development of [0003] Meanwhile, with the ASON (Automatic Switch Optical Network- automatically switched optical network) technology, ASON key technology system equipment is popular with major operators realize concerned, the situation is more complicated optical communication network, such as the mESH (cellular wireless mesh network, wireless mesh networks) networking and cross-link point service scheduling, to build non-blocking switching matrix to achieve smooth transfer platform. 无阻交叉光网络是ASON节点设备传送平面的核心部分。 CROSS unobstructed optical network node apparatus ASON transport plane core part. 为此,众多的设备制造商及组织提出了光交叉连接OXC和ROADM(可重构光分插复用器)等多种解决方案,以消除节点瓶颈,实现无阻塞、大容量、智能化的光传送网络。 For this purpose, many device manufacturers and organizations of the optical cross connect OXC and the ROADM (Reconfigurable OADM), and other solutions to eliminate the bottleneck node, non-blocking, high-capacity, intelligent optical transport network.

[0004] 目前在光交叉网络中应用的比较多的CKC设备(光交叉连接设备)光路结构如图1所示,它由N个复用器、N个解复用器和N个(N+K)X(N+K)光开关组成。 [0004] In the optical cross-network currently more applications of CKC apparatus (optical cross-connect device) the optical structure shown in Figure 1, which consists of N multiplexers, demultiplexers N and N (N + K) X (N + K) optical switch. 该CKC有N个输入/输出端口和(NXK)个上/下路端口,能够从每条线路上/下路K个波长信号。 The CKC has the N input / output ports and (NXK) th / drop ports to each line from the add / drop wavelengths K signals. 可以说开关矩阵是CKC设备的核心器件,目前性能较好的光开光是机械光开关,但其难以大规模集成,固态波导光开关(如热光开关、)易于集成,开关速度较快,但插入损耗较大,偏振相关特性、隔离度都不如机械光开关;最有前途的是基于MEMS技术(微电子机械开关)的光开光矩阵,易于集成,适宜于制造大规模开关矩阵,在规模方面,采用2D结构的MEMS光开关已有64X64的商用产品,采用3D结构的MEMS光开关也有上千端口数的产品,据报道,^Cros 公司已推出1152X 1152规模的光开关矩阵。 It can be said switching matrix is ​​a core device CKC device, the current performance of the optical switch is preferably light mechanical optical switch, but it is difficult to scale integration, a solid state waveguide optical switch (optical switch such as heat,) ease of integration, faster switching speeds, but large insertion loss, polarization-dependent properties, not as a mechanical isolation optical switches; most promising is based on MEMS technology (microelectromechanical switch) matrix optical switch, ease of integration, a large-scale switch matrix suitable for the manufacture, in terms of size using 2D MEMS optical switches have been 64X64 structure of commercial products, the use of the 3D structure of MEMS optical switches have several thousands of products port, according to reports, ^ Cros has introduced 1152X 1152 scale optical switch matrix. 从而使构建中等规模和大规模光纤网络节点成为可能。 So that the construction of medium-sized and large-scale optical network node becomes possible.

[0005] 图2给出了基于波长选择开关(WSS)模块实现多维ROADM的光网络结构图,以实现各线路方向信号的广播功能,多方向信号之间的灵活调度功能。 [0005] Figure 2 shows a block diagram of an optical network based on multi-dimensional ROADM wavelength selective switch (WSS) module, to implement the functions of the broadcast signal line direction, flexible scheduling function between the multi-directional signals.

[0006] 但是,由于传统的OXC和ROADM实现的是纯光交叉,波长通透性差,OXC和ROADM 技术应用到光交叉网络还存在以下问题:1、波长在交叉矩阵中不能实现完全的无阻传输, 即不能实现波长变换,端口通用性差;2、多维ROADM的方案对业务端口部分或全部不具备方向无关性或波长无关性;3、通过采用小规模光开关阵列和WSS器件搭建的OXC设备或ROADM系统集成度低,连纤复杂,可维护性差,不适合组建大规模的全光网络路由;4、由于光开关和WSS模块插损大,信号容易出现劣化,交叉节点无业务信号再生功能。 [0006] However, since the conventional OXC and ROADM achieve pure optical cross-wavelength poor permeability, OXC and ROADM optical cross-network technology to further the following problems: 1, in the wavelength cross-connect matrix can not be achieved completely unobstructed transmission that it is impossible to achieve wavelength conversion, the port poor versatility; 2, multidimensional ROADM solution for service ports partially or fully provided independently of the direction or wavelength independence; 3, by using a small optical switching array and WSS device built OXC device or low integration ROADM systems, fiber connection complexity, maintainability, not suitable for the formation of large-scale all-optical network routing; 4, since the optical switch module and the WSS large insertion loss, the signal is prone to degradation, no cross-node traffic signal regeneration.

[0007] 因此,现有技术还有待于改进和发展。 [0007] Thus, the prior art has yet to be improved and developed.

发明内容 SUMMARY

[0008] 本发明所要解决的技术问题是:提供一种无阻光网络装置及光网络节点端到端业务无阻交叉方法,该装置和方法可以解决光网络交叉节点问题,实现节点端到端业务无阻交叉,提高光网络节点的无阻交叉能力。 [0008] The present invention solves the technical problem are: to provide an unobstructed optical network device and an optical network node unimpeded CROSS-end service, the apparatus and method can solve the problem of an optical network node cross achieve unimpeded end service node cROSS improved ability to cross unimpeded optical network node.

[0009] 本发明为解决上述技术问题所采用的技术方案为: [0009] Technical Solution The present invention to solve the above technical problem is:

[0010] 一种无阻光网络装置,包括M个方向N端口的输入复用光信号,M路NXN端口波长指配单元,至少一方向指配单元,所述M个方向N端口的输入复用光信号分别作为所述M 个NXN端口波长指配单元的输入; [0010] An optical network device unhindered, comprising an input optical signal multiplexed port M directions N, M NXN port wavelength channel assigning unit assigning unit at least in one direction, the direction of the M input ports of the multiplexing N as the optical signals of the M input ports NXN wavelength assignment unit;

[0011] 所述NX N端口波长指配单元用于将某一指定方向的所述输入复用光信号解复用到N端口,并将N端口波长中至少一对端口的光信号进行波长变换,输出波长指配后的N端口波长信号; [0011] The NX N-port wavelength assignment unit is configured to input the multiplexed optical signal Solutions a specified direction N multiplexed port and at least one N-port wavelength optical signal wavelength conversion port , N-port wavelength signal output wavelength assignments;

[0012] 所述方向指配单元与各所述NXN端口波长指配单元的输出端口连接,用于将波长指配后的M个方向N端口波长信号指配到任一输出方向,输出M个方向N端口的输出复用光信号,其中,所述方向指配单元包括N个MXM的光开关,每个光开关分别将属于同一端口波长的来自M个输入方向的信号任意指配到M个输出方向; [0012] The direction of assignment unit NXN port wavelength each output port with the finger means, means for wavelength-rear direction with the M N-port wavelength signals assigned to any output direction, output M N multiplexed optical signal output port direction, wherein the direction of the optical switch unit comprises assigning the N MXM, each of the optical switches are belonging to the M input signals from the direction of the same wavelength at any port assigned to M output direction;

[0013] 其中:M和N均为自然数。 [0013] wherein: M and N are natural numbers.

[0014] 所述的光网络装置,其中,所述的方向指配单元包括N个MXM的光开关,以及M个输出光复用器,所述输出光复用器至少有N个输入端口;其中,第η个光开关的M个输入端口分别与各波长指配单元的第η个输出端口连接,各光开关的M个输出端口一一对应地与各输出光复用器的一输入端口连接,其中,第η个光开关的M个输出端口分别与各输出光复用器的第η个输入端口连接;所述输出光复用器用于将方向指配后的N端口波长信号进行复用并从指定的方向输出; Optical network device [0014], wherein said assigning means includes a light direction switching MXM of N, and M output optical multiplexer, the optical multiplexer output at least N input ports; wherein, η optical switch of M input ports of η denote output ports connected with respective wavelengths unit, the M output ports of each optical switch is one to one input port connected to a respective output of the optical multiplexer, wherein , the first optical switches η M output ports are connected to respective input ports of η output optical multiplexer; optical multiplexer for the output direction refers to N-port wavelength signals multiplexed and with the specified direction of the output;

[0015]其中:η = 1,2,3· · · N。 [0015] where: η = 1,2,3 · · · N.

[0016] 所述的光网络装置,其中,所述的NXN端口波长指配单元包括:第一光解复用器、 端口数为NXN的可调波长转换器、耦合器、以及第二光解复用器;所述第一光解复用器用于将一个方向的所述N端口输入复用光信号解复用到各相应波长端口输出,所述可调波长转换器用于将N端口波长中至少一对端口的光信号进行波长变换和信号再生,输出波长变换后的N端口波长光信号至所述耦合器,所述耦合器用于将波长变换后的N端口波长光信号进行合波,输出全波长光信号,所述第二光解复用器用于将所述全波长光信号按照波长分别从相应的端口解复用输出。 [0016] The optical network device, wherein said NXN port wavelength assignment unit comprises: a first optical demultiplexer, the port number of the tunable wavelength converter NXN coupler, and a second light solution multiplexer; the N input ports of the first solution multiplexed optical signal for the optical demultiplexer multiplexes a direction corresponding output port of each wavelength, the tunable wavelength converter for the N-port wavelength at least one port of the optical signal wavelength conversion and signal regeneration, wavelength conversion to the output of the coupler N-port wavelength optical signal, said N-port coupler for wavelength optical signal wavelength-multiplexed transformed output all-wavelength optical signal, said second optical demultiplexer for said optical signals by wavelength all wavelengths are demultiplexed from the corresponding output port.

[0017] 所述的光网络装置,其中,所述NXN端口波长指配单元还包括一光放大器,该光放大器的输入端与所述耦合器输出端连接,该光放大器的输出端与所述第二光解复用器的输入端口连接,用于对所述全波长光信号进行放大。 [0017] The optical network device, wherein the wavelength NXN port assigning unit further comprises an optical amplifier, the optical amplifier coupled to an input end connected to the output terminal, the output terminal of the optical amplifier an input port connected to the second optical demultiplexer, for the full wavelength optical signal amplification.

[0018] 所述的光网络装置,其中,各所述NXN端口波长指配单元分别采用独立模块实现。 [0018] The optical network device, wherein each of said wavelength NXN port assigning unit are independent modules.

[0019] 一种光网络节点端到端业务无阻交叉方法,其中,包括以下步骤: [0019] An optical network node unimpeded cross-end service method, comprising the steps of:

[0020] Α、将输入的M个方向N端口波长的业务进行波长变换,获得波长指配后的M个方向N端口波长信号,具体包括:M路NXN端口波长指配单元分别在每个方向的N端口波长之间进行波长变换,获得波长指配后的M个方向N端口波长信号; [0020] Α, the N input ports of the M directions wavelength wavelength conversion service, obtain M N-port wavelength direction signal wavelength assignment comprises: M NXN port wavelength path assignment unit in each direction, respectively, wavelength between the N-port wavelength conversion, the M direction is obtained by the wavelength assignments N-port wavelength signals;

[0021] B、将波长指配后的M个方向N端口波长信号进行方向指配,输出经方向指配后的M个方向N端口波长的业务,具体包括:Ν个MXM的光开关分别将属于同一端口波长的来自M个输入方向的信号任意指配到M个输出方向; [0021] B, the wavelength means the M directions N-port wavelength signal with the direction assigned, outputs the direction refers to the N-port wavelength of the M direction after distribution services, including: Ν optical switch a MXM respectively the M input signals from the direction of the port belonging to the same wavelength assigned to any of M outputs directions;

[0022] 其中:M和N均为自然数。 [0022] wherein: M and N are natural numbers.

[0023] 本发明的有益效果为:本发明由于采用了M路NXN端口波长指配单元和方向指配单元,解决了光网络交叉节点的端到端业务与波长、方向的灵活指配和交叉问题,实现了任意业务到任意波长、任意方向的指配,解决了波长连续性和波长通透性,提高了光网络节点的无阻交叉能力。 [0023] Advantageous effects of the present invention are: the present invention adopts M NXN port wavelength channel assigning unit assigning unit and a direction to solve the cross-end service node and the optical network wavelength, flexible assignment and cross direction problem, any service to achieve any wavelength, in any direction is assigned, and the wavelength of the wavelength continuity solve permeability, improved ability to cross unimpeded optical network node. 并且由于波长指配单元中的可调波长转换器具有信号再生作用,还解决了光网络交叉节点业务信号质量劣化的问题,提高了被传输的光信号的质量。 And the wavelength assignment unit signal having a tunable wavelength converter regeneration, but also solve the problem of traffic across nodes of an optical network signal quality deterioration and improve the quality of the optical signal is transmitted.

附图说明 BRIEF DESCRIPTION

[0024] 图1为现有技术OXC设备光路结构图; [0024] FIG. 1 is a prior art block diagram of an optical path equipment OXC;

[0025] 图2为现有技术中由2N个WSS构成的NXN端口多维ROADM光路结构图; [0025] FIG. 2 is a multidimensional ROADM NXN port configuration diagram of an optical path in the prior art consisting of 2N the WSS;

[0026] 图3为本发明无阻光网络装置的方案框图; [0026] FIG 3 a block diagram of an optical network apparatus embodiment of the present invention unhindered;

[0027] 图4为本发明无阻光网络装置一实施方式框图。 [0027] FIG. 4 unimpeded manner a block diagram of an embodiment of an optical network apparatus of the present invention.

具体实施方式 Detailed ways

[0028] 下面根据附图和实施例对本发明作进一步详细说明: [0028] The following figures and examples will be further detailed description of the invention:

[0029] 现有技术的OXC和ROADM实现的都是纯光交叉,如果当两个方向的两个相同波长承载的业务都要从某一个方向输出时,CKC和ROADM就无法实现,因为如果指配了,则两个相同波长的业务会冲突,接收端将无法分辨这两个业务了,故OXC和ROADM的波长通透性差。 [0029] OXC and ROADM prior art are pure optical cross achieved, if and when the same wavelength in both directions of the two operations to be carried when the output from a certain direction, the CKC and ROADM can not be achieved, because if means equipped with, the two traffic conflict of the same wavelength, the receiving end can not distinguish between these two operations, and so the OXC and ROADM wavelength poor permeability. 为此,本发明提供了一种光网络节点端到端业务无阻交叉方法。 To this end, the present invention provides an optical network node unimpeded CROSS-end service. 假设,M表示第一数值, N表示第2数值,本发明方法首先按照需求将输入的M个方向N端口波长的业务进行波长变换,获得波长指配后的M个方向N端口波长信号;然后将波长指配后的M个方向N端口波长信号进行方向指配,输出经方向指配后的M个方向N端口波长的业务。 Suppose, M represents a first value, N represents the second value, the first method of the present invention is subjected to wavelength conversion in accordance with the direction N of the M ports of the input wavelength needs of the business, it refers to a wavelength obtained N M directions with port wavelength signal; and the wavelength refers to a wavelength of the M N-port direction with the direction signal assignment output the N-port wavelength direction refers to the direction of M with the business. 其中,波长指配是指将一个波长变换为另外一个波长,实现波长变换,即通过波长变换,将原有承载在某一波长上的业务变换到另一波长上;方向指配是指将A方向某个波长业务指配到B输出方向进行输出;经过这样的波长变换和方向指配,可以实现灵活调度,不会出现阻塞的现象,例如,可以使原有两个相同波长的不同业务按照需要都从某一方向输出业务,而不会发生冲突。 Wherein the wavelength assignment refers to a wavelength converted to another wavelength, to achieve wavelength conversion by the wavelength conversion i.e., the original carried on a service wavelength converted to another wavelength; refers to the assignment direction A the direction of a certain wavelength assigned to service B outputs output direction; after wavelength conversion and the direction of such assignment, scheduling flexibility can be achieved, without blocking phenomenon, for example, the two different services of the same wavelength in accordance with the original It requires all outgoing traffic from a certain direction, without conflict. 从而解决光网络交叉节点波长连续性和波长通透性的问题。 Thereby solving problems with permeability wavelength optical wavelength continuity and cross-network node.

[0030] 为实现本发明光网络节点端到端业务无阻交叉方法,本发明提供了一种无阻光网络装置,其基本方案如图3所示。 [0030] The optical network-end service node unobstructed cross-implemented method of the present invention, the present invention provides an optical network device unhindered, the basic scheme shown in Fig. 同样,设M表示第一数值,N表示第2数值,无阻光网络装置包括输入的M个方向N端口波长的业务,输出经过波长指配和方向指配后的M个方向N 端口波长的业务,M路NXN端口波长指配单元,一个方向指配单元。 Also, M represents a first setting value, N represents the second value, unobstructed optical network device comprises N input ports of the M directions of traffic wavelength, the wavelength means outputs the N-port wavelength with the M direction after the direction and assignment services , M NXN port wavelength channel assigning unit assigning unit in one direction. 其中,输入的M个方向 Wherein, M input directions

N端口波长的业务(A01,A02,......,Α0Μ),表示有M个方向的业务,每个方向有N端口波 N-port wavelength services (A01, A02, ......, Α0Μ), M represents there are traffic directions, each direction has a wave-port N

长,所述M个方向N端口波长的输入复用信号分别作为M路NXN端口波长指配模块(B01, Length direction N of the M input ports of the wavelength multiplexed M-way NXN port wavelength assignment module (B01 as separate signals,

B02,......,Β0Μ)的输入;方向指配单元有MxN个输入端口,M个输出端口;输出的M个方 B02, ......, Β0Μ) input; MxN direction assigning unit has input ports, M output ports; M th output side

向N端口波长的业务(D01,D02,......,D0M),表示有M个方向的业务,每个方向有N端口 N-port wavelength to the service (D01, D02, ......, D0M), M represents there are traffic directions, each direction has N ports

波长,这些是方向指配单元的输出,是经过波长指配和方向指配后的输出业务。 Wavelength, which refers to the direction with the output unit, a wavelength-direction refers to the feature assignment and outgoing traffic. 其中,M路NXN端口波长指配单元实现任意端口波长的指配,指配的颗粒度是一个端口波长。 Wherein, M NXN port wavelength channel assigning unit arbitrary port wavelength assignment granularity is assigned a port wavelength. 即每路NXN端口波长指配单元先将某一指定方向的输入复用光信号解复用到N个端口,并将N个 Solutions i.e. input multiplexed optical signal wavelength for each channel NXN port means with a first specified direction means multiplexes N ports, and the N

5端口波长中至少一对端口的光信号进行波长变换,输出波长指配后的N端口波长信号,而M 路NXN端口波长指配单元将输出经过波长变换和指配后的M个方向、每个方向N端口波长的信号给方向指配单元。 Port wavelength 5 at least one optical signal port wavelength conversion, the output wavelength refers to the N-port wavelength signal feature, the M-way NXN port wavelength assignment unit outputs the wavelength conversion, and means M direction after alignment, each a direction signal to the directions of the N-port wavelength assignment unit. 方向指配单元则用于将波长指配后的M个方向N端口波长信号指配到任一输出方向,输出M个方向N端口的输出复用光信号,实现了任意业务到任意波长、 任意方向的指配。 Means for assigning the direction of the wavelength refers to the direction M with N-port wavelength signals assigned to any output direction, the output-multiplexed optical signal M output ports of the direction N, to achieve any service any wavelength, any the direction of assignment. 图3中,Fl是承载某方向的N端口输入复用信号的光纤;F2是M路NXN 端口波长指配单元的输入和内部承载信号的光纤;F3是M个NXN端口波长指配模块和方向指配单元之间承载信号的光纤;F4是方向指配单元的内部和输出承载信号的光纤;F5是承载某方向的经过波长指配和端口指配处理后N端口输出复用信号的光纤。 In FIG. 3, Fl is an optical fiber the N-port input multiplexed signal carrying a certain direction; F2 of the M path NXN port wavelength means the fiber input and the interior of the carrier signal feature unit; F3 is the M NXN port wavelength assignment module and direction It refers to fibers carrying signals between the distribution unit; fiber refers to a direction inside the F4 and the output signal with the carrier unit; the F5 is carried through in a certain direction and wavelength assignment output port is the N-port optical signal after multiplexed with processing.

[0031] 本发明无阻光网络装置的具体实施方式如图4所示,该实施方式中以8方向,每方向40波信号的无阻交叉为例,即N = 40,M = 8的情况。 [0031] DETAILED DESCRIPTION unobstructed optical network device of the present invention is shown in Figure 4, in this embodiment, 8 directions, each direction unimpeded cross wave signal 40 as an example, i.e., N = 40, M = 8 in the case. 8方向分别为:A方向、B方 8 directions are: A direction, B party

向.......H方向,其中A方向有A方向输入、A方向输出,B〜H同样。 H ....... the direction, direction A in which the A direction input, the output of the A direction, B~H same. 40波信号的波长分 Wavelength division wave signal 40

别为λ 1、λ 2.......λ 40,A〜H方向的输入光信号为λ 1、λ 2.......λ 40的复用光信 Do is λ 1, λ 2 ....... λ 40, the input optical signal A~H direction is λ 1, λ 2 ....... λ multiplexed optical channels 40

号,A〜H方向的输出光信号为λ1、λ2.......λ 40的复用光信号,输入、输出光信号虽然 No., the output optical signal of lambda A~H direction, multiplexed optical signal of λ2 ....... λ 40, input and output optical signal while

波长都是λ 1〜λ 40,但是该波长上承载的业务可能因为波长变换而不同了。 It is the wavelength λ 1~λ 40, but carried on the wavelength because the wavelength conversion services may be different.

[0032] 该实施方式中包括8路40x40波长指配单元,分别对应A〜H共8个方向。 [0032] This embodiment includes a 40x40 wavelength assignment unit 8, respectively A~H total of eight directions. 每个40x40波长指配单元分别由第一光解复用器ODUl、第二光解复用器0DU2、一个端口数40x40 可调谐OTU阵列ql、一个光耦合器rl和一个光放大器si组成。 Each 40x40 wavelength assigning unit by the first optical demultiplexer ODUl, a second optical demultiplexer 0DU2, a port number OTU 40x40 array of tunable ql, rl and a photocoupler composed of a light amplifier si. ODUl将某一方向(例如方向A、或方向B...或方向H)的输入复用光信号按照波长分别从相应的端口解复用输出,即 ODUl a certain direction (e.g. a direction A, B or the direction or directions ... H) in accordance with the multiplexed optical signal input from the respective wavelengths demultiplexed output ports, i.e.,

将复用在一根光纤上的λ 1、λ 2.......λ 40的光信号分解到ODUl的各个波长端口输出, The multiplexed on a single fiber of λ 1, the optical signal λ 2 ....... λ 40 is an exploded respective wavelengths to the output port of ODUl,

每端口输出某个特定波长的光信号。 The output optical signal of a particular wavelength per port. 0DU1、0DU2 :将复用的信号按照波长分别从相应的端 0DU1,0DU2: a signal multiplexed according to wavelengths from the respective end

口解复用输出,即将复用在一根光纤上的入1、λ2.......λ 40的光信号,分解到ODUl (或 The 1, λ2 ....... demultiplexed optical signals output port, i.e. multiplexed on a single fiber of the λ 40, decomposed into ODUl (or

0DU2)的各个波长端口输出,每端口输出某个特定波长的光信号。 0DU2) output port of each wavelength, output optical signal of a particular wavelength per port. 可调谐OTU阵列ql将经过ODUl分解的特定波长光信号经过波长变换,输出另外一个波长的光信号,使得经过ql输出波长种类数不变、不冲突,如λ 1经过波长变换后其业务变换到λ 2上,同时λ 2经过波长变换后其业务变换到λ 1上,输出波长变换后的40端口波长光信号。 The tunable OTU array ql through a particular wavelength optical signal after wavelength conversion ODUl decomposed, the output signal of a further optical wavelength, so that the number of kinds of wavelengths through the same output ql, not conflict, such as λ 1 wavelength conversion after conversion to its business the [lambda] 2, while [lambda] 2 wavelength-conversion after conversion to its operations on a [lambda], the wavelength of the optical signal 40 output port of the wavelength conversion. 可调谐OTU阵列q 1通过光信号的光-电-光变换和整形,提高了被传输的光信号的质量,因此还具有信号再生的功能。 Q 1 OTU array of tunable optical signal through an optical - electrical - optical conversion and shaping, improves the quality of the optical signal is transmitted, and therefore also has a signal regeneration function. 波长变换和再生之后的信号经过光耦合器进行光信号的复用,耦合器rl的端口与波长无关,实现将不同波长的光信号耦合到一根光纤上,输出全波长光信号。 The signal after wavelength conversion and regeneration through the optocoupler multiplexes port coupler with wavelength of an optical signal irrespective rl achieve coupling optical signals of different wavelengths onto an optical fiber, the wavelength of the optical signal output full. 由于耦合器会带来插损,采用光放大器si实现对带内光信号的功率放大。 Since the insertion loss will bring the coupler, an optical amplifier si achieved using power amplification band of the optical signal. 放大后的光信号再经过0DU2 解复用,最后得到经过波长变换和指配后的8个方向、每个方向40端口波长的输出复用光信号,该信号传给方向指配单元。 The amplified optical signal then passes 0DU2 demultiplexing, and finally obtained through the wavelength conversion means with the eight directions, each direction 40 the output port of the wavelength-multiplexed optical signal, the direction signal to the assigning unit. 上述A〜H共8路波长指配单元可以采用8个独立的模块实现,也可以集中在一个模块上实现。 8 above A~H wavelength channel assigning unit 8 may be employed to achieve independent modules, may be implemented on a centralized module.

[0033] 方向指配单元包括N个MXM的光开关,M个输出光复用器(OMU)。 [0033] The assigning unit includes a light direction switching MXM of the N, M output optical multiplexer (OMU). 经过波长变换和指配后的M个方向的第η个波长信号分别连接第η个光开关的输入端口(n = 1,2,3. . . N), 各光开关的M个输出端口一一对应地与各输出光复用器的一输入端口连接;N个光开关用于将波长指配后的M个方向N端口波长信号指配到任一输出方向,而输出光复用器用于将方向指配后的N端口波长信号进行复用并从指定的方向输出。 After the wavelength conversion means and the direction of M with the first signal wavelength η η respectively connected to the first input port of optical switches (n = 1,2,3... N), M output ports of each optical switch of a a correspondence of each input port connected to an output of the optical multiplexer; N optical switch for wavelength means the direction M with N-port wavelength signals assigned to any output direction, and the direction of the output optical multiplexer for It refers to a N-port wavelength signal with multiplexed and outputted from the specified direction. 以图4所示为例,方向指配单元包括40个8x8的光开关X,8个光复用器,每个光复用器具有40个端口。 In an example shown in FIG. 4, the direction assigning unit 40 comprises a 8x8 optical switch X, 8 optical multiplexers, optical multiplexers each having 40 ports. 光复用器OMU 的功能与耦合器类似,实现不同波长的光信号耦合到一根光纤上。 OMU optical multiplexer functions similar to the coupler, coupling optical signals of different wavelengths to an optical fiber. 这里的OMU端口波长是固定的,即与OMU的输入端口波长相关。 OMU port wavelength here is fixed, i.e., associated with the input port of the wavelength OMU. 经过波长变换和指配后的8个方向A〜H的λ 1 After eight wavelength conversion means and the directions of λ 1 with A~H

波长信号即Aal、Xbl......λ hi连接第一光开关Xl的8个输入端口,而第一光开关Xl I.e. wavelength signal Aal, Xbl ...... λ hi Xl is connected to a first optical switch eight input ports, and the first optical switch Xl

的8个输出端口一一对应地与A〜H的8个输出方向的光信号复用器OMU连接。 The 8 output ports connected to one correspondence with the optical signal 8 output multiplexer direction of the OMU of A~H. 这样通过 So by

控制光开关X可以实现输入方向的Aal、Abl......Ahl到A〜H方向的任意指配。 Aal can be implemented to control the optical switch input direction X, to any Abl ...... Ahl A~H direction assignment. which is

完成λ 1波长信号(包括Aal、Xbl......Ahl)的任意方向A〜H指配。 Any direction completion signal wavelength λ 1 (including Aal, Xbl ...... Ahl) of A~H assignment. 类似的,8个方 Similarly, the side 8

向A〜H的λ 2波长信号即λ a2、Ab2......λ h2连接光开关X2的8个输入端口,X2的 2 wavelength signal to the λ A~H i.e. λ a2, Ab2 ...... λ h2 optical switch X2 is connected to eight input ports, X2,

8个输出端口一一对应地与A〜H的8个输出方向的光信号复用器连接。 8 output ports connected to the one-eight light signals output multiplexer A~H direction. ......类似的, ......akin,

8个方向A〜H的λ 40波长信号即λ a40、λ b40......λ h40连接光开关X40的8个输入 Eight directions A~H i.e. the signal wavelength λ 40 λ a40, λ b40 ...... λ h40 optical switch X40 is connected to eight input

端口,X40的8个输出端口分别连接A〜H8个输出方向的光信号复用器。 8 output ports ports, X40 are connected A~H8 direction of the light signal output multiplexer.

[0034] 在图4所示的实施方式中,如果A、B、C输入方向的λ 1波长业务都要从A方向输出,在实际应用中可以有多种波长分配方法,仅以以下实现办法为例进行说明: [0034] In the embodiment shown in Figure 4, if A, B, λ C input direction a wavelength to be output from the A direction of the traffic, there may be multiple wavelength assignment methods in practice, the only way to achieve the following as an example:

[0035] (I)A输入方向的λ 1业务波长不变;通过40x40波长指配后为λ&1,进入XI。 [0035] λ (I) A 1 input direction unchanged service wavelength; wavelength by 40x40 After the assignment of λ & 1, enter XI.

[0036] O) B输入方向的λ 1业务波长通过40x40波长指配后为λ 1^2,进入Χ2。 λ [0036] O) B 1 traffic input direction by the wavelength assigned to the wavelength 40x40 λ 1 ^ 2, into the Χ2.

[0037] C3)C输入方向的λ 1业务波长通过40x40波长指配后为λ c3,进入X3。 λ [0037] C3) C 1 service input direction by the wavelength assigned to the wavelength 40x40 λ c3, enter X3.

[0038] (4) λ al进入Xl后指配到A向输出OMU的λ 1端口、λ b2进入X2后指配到A向输出OMU的λ 2端口、λ c3进入X3后指配到A向输出OMU的λ 3端口。 [0038] (4) λ al Into Xl refers to the A assigned into the X2 to the output OMU of λ 1 port, λ b2 to A enters X3 outputs OMU of λ 2 port, λ c3 with the assignment to the A to λ 3 output port of the OMU.

[0039] (5)实现Α、B、C输入方向的λ 1波长业务都从A方向输出。 [0039] (5) implemented Α, B, λ C 1 wavelength input direction are outputted from the A direction of traffic.

[0040] 采用本发明的方法和装置,1、解决了光网络交叉节点的端到端无阻交叉;2、解决了光网络交叉节点的端到端业务与波长、方向的灵活指配和交叉;3、解决了波长连续性问题,即:实现任意业务到任意波长、任意方向的指配;4、解决了光网络交叉节点业务信号质量劣化的问题。 [0040] The method and apparatus of the present invention, 1, solve the unobstructed optical network end node intersecting cross; 2, solves the business end of an optical network with wavelength across nodes, and flexible assignment and cross direction; 3, the wavelength continuity solve the problem, namely: business to any arbitrary wavelength, in any direction assignment; 4, solves the problem of traffic across nodes of the optical network signal quality deterioration. 有利于提高波分复用系统设备的业务调度灵活性、方便客户灵活配置业务, 提高了产品的市场竞争力。 Help to improve the business scheduling flexibility WDM system equipment to facilitate the customers the flexibility to configure business, improve the market competitiveness of products.

[0041] 可以理解的是,对本领域普通技术人员来说,可以根据本发明的技术方案及其发明构思加以等同替换或改变,而所有这些改变或替换都应属于本发明所附的权利要求的保护范围。 [0041] It will be appreciated that those of ordinary skill in the art, or can be changed according to the technical equivalents of the invention and its inventive concept, and all such modifications or substitutions of the present invention should belong to the appended claims protected range.

Claims (6)

1. 一种无阻光网络装置,包括M个方向N端口的输入复用光信号,其特征在于:还包括M路NXN端口波长指配单元,至少一方向指配单元,所述M个方向N端口的输入复用光信号分别作为所述M个NXN端口波长指配单元的输入;所述NXN端口波长指配单元用于将某一指定方向的所述输入复用光信号解复用到N 端口,并将N端口波长中至少一对端口的光信号进行波长变换,输出波长指配后的N端口波长信号;所述方向指配单元与各所述NXN端口波长指配单元的输出端口连接,用于将波长指配后的M个方向N端口波长信号指配到任一输出方向,输出M个方向N端口的输出复用光信号,其中,所述方向指配单元包括N个MXM的光开关,每个光开关分别将属于同一端口波长的来自M个输入方向的信号任意指配到M个输出方向;其中:M和N均为自然数。 An unobstructed optical network device, comprising an input optical signal multiplexed port M N directions, characterized by: further comprising a M-way NXN port wavelength assignment unit assigning unit at least one direction, the direction N of M the input ports are multiplexed optical signal M input as the wavelength NXN port assigning unit; said NXN port wavelength assignment unit is configured to input the multiplexed optical signal to a specified direction solution multiplexed N port, and at least one N-port wavelength optical signal wavelength conversion port, an output port means N wavelength signal with a wavelength; direction refers to the distribution unit and each of said NXN port wavelength assignment of the output port means for wavelength means the direction M with N-port wavelength signals assigned to any output direction, the direction of the M outputs N-multiplexed optical signal output port, wherein the direction of assigning the units include N MXM optical switches, each optical switch port, respectively, belonging to the same wavelength of the input signal from the M direction is arbitrarily assigned to the M outputs directions; wherein: M and N are natural numbers.
2.根据权利要求1所述的光网络装置,其特征在于:所述的方向指配单元包括N个MXM的光开关,以及M个输出光复用器,所述输出光复用器至少有N个输入端口;其中,第η 个光开关的M个输入端口分别与各波长指配单元的第η个输出端口连接,各光开关的M个输出端口一一对应地与各输出光复用器的一输入端口连接,其中,第η个光开关的M个输出端口分别与各输出光复用器的第η个输入端口连接;所述输出光复用器用于将方向指配后的N端口波长信号进行复用并从指定的方向输出;其中:η = 1,2,3. . . N。 The optical network device according to claim 1, wherein: said assigning means includes a light direction switching MXM of N, and M output optical multiplexer, the optical multiplexer output at least N an input port; wherein the first optical switch η M input ports of η denote output ports connected with respective wavelengths unit, each of the M output ports of the optical switch to one correspondence with a respective output of the optical multiplexer input port is connected, wherein, η M output ports of the optical switches are respectively connected to the first input port of each of the [eta] th output optical multiplexer; optical multiplexer for the output direction refers to N-port wavelength multiplexed signal feature and output from the specified direction; wherein: η = 1,2,3 N....
3.根据权利要求1或2所述的光网络装置,其特征在于:所述的NXN端口波长指配单元包括:第一光解复用器、端口数为NXN的可调波长转换器、耦合器、以及第二光解复用器;所述第一光解复用器用于将一个方向的所述N端口输入复用光信号解复用到各相应波长端口输出,所述可调波长转换器用于将N端口波长中至少一对端口的光信号进行波长变换和信号再生,输出波长变换后的N端口波长光信号至所述耦合器,所述耦合器用于将波长变换后的N端口波长光信号进行合波,输出全波长光信号,所述第二光解复用器用于将所述全波长光信号按照波长分别从相应的端口解复用输出。 The optical network device according to claim 1, wherein: said NXN port wavelength assignment unit comprises: a first optical demultiplexer, NXN port number of tunable wavelength converter coupled , and a second optical demultiplexer; the N input ports of the first solution multiplexed optical signal for the optical demultiplexer multiplexes a direction corresponding output port of each wavelength, the tunable wavelength converter N-port wavelength for the optical signal in at least one port of the coupler to be N-port wavelength optical signal wavelength conversion and signal regeneration, wavelength conversion output after the coupling for the N-port wavelength after wavelength conversion multiplexed optical signal, the optical signal output of the full wavelength of a second optical demultiplexer for said optical signals by wavelength all wavelengths are demultiplexed from the corresponding output port.
4.根据权利要求3所述的光网络装置,其特征在于:所述NXN端口波长指配单元还包括一光放大器,该光放大器的输入端与所述耦合器输出端连接,该光放大器的输出端与所述第二光解复用器的输入端口连接,用于对所述全波长光信号进行放大。 The optical network device according to claim 3, wherein: said wavelength NXN port assigning unit further comprises an optical amplifier, input of the optical amplifier connected to the output end of said coupler, the optical amplifier an output terminal connected to the second input port of the optical demultiplexer, for the full wavelength optical signal amplification.
5.根据权利要求4所述的光网络装置,其特征在于:各所述NXN端口波长指配单元分别采用独立模块实现。 The optical network device according to claim 4, wherein: each of said wavelength NXN port assigning unit are independent modules.
6. 一种光网络节点端到端业务无阻交叉方法,其特征在于,包括以下步骤:Α、将输入的M个方向N端口波长的业务进行波长变换,获得波长指配后的M个方向N 端口波长信号,具体包括:Μ路NXN端口波长指配单元分别在每个方向的N端口波长之间进行波长变换,获得波长指配后的M个方向N端口波长信号;B、将波长指配后的M个方向N端口波长信号进行方向指配,输出经方向指配后的M个方向N端口波长的业务,具体包括:Ν个MXM的光开关分别将属于同一端口波长的来自M个输入方向的信号任意指配到M个输出方向;其中:Μ和N均为自然数。 An optical network node unimpeded CROSS-end service, characterized by comprising the steps of: [alpha], the N input ports of the M directions wavelength conversion service wavelength, the wavelength refers to obtain the M directions with N port wavelength signal, comprises: Μ NXN port wavelength path assigning means respectively between the N-port wavelength conversion wavelength in each direction, to obtain the M wavelength refers to N-port wavelength direction signal feature; B, wavelength assignment after the M direction of the N-port wavelength signal direction assigned, outputs the direction refers to the N-port wavelength of the M direction after distribution services, including: Ν a MXM optical switches respectively belonging to the same port wavelength from M inputs direction signals assigned to any of M outputs directions; wherein: Μ and N are natural numbers.
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