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Optical burst add drop multiplexer

A technology of add-drop multiplexer and optical burst, which is applied in the field of communication, can solve the problems of high cost of OBADM, and achieve the effect of solving high cost and reducing cost

Inactive Publication Date: 2013-12-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide an optical burst add-drop multiplexer, to at least solve the problem of high cost of OBADM in the related art

Method used

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Embodiment 1

[0029] The embodiment of the present invention provides an OBADM. figure 2 is a structural block diagram of the OBADM according to Embodiment 1 of the present invention, such as figure 2 As shown, the OBADM includes: a wavelength selective switch 202, which is used to separate the optical signal from the line receiving optical fiber according to the wavelength; a service processing module 204, which is used to determine the wavelength of the optical signal to be received according to the optical signal separated by the wavelength selective switch; The high-speed 1×N optical switch 206 is coupled to the wavelength selective switch 202 and the service processing module 204, and is used to transmit the optical signal having the determined wavelength among the optical signals separated by the wavelength selective switch 202 under the control of the service processing module 204 to the business processing module 204.

[0030] In this embodiment, the wavelength selective switch a...

Embodiment 2

[0041] This embodiment provides a method for realizing OBADM by using a wavelength selective switch and a single high-speed optical switch. The implementation of this embodiment will be described in detail below.

[0042] image 3 is a structural block diagram of the OBADM according to Embodiment 2 of the present invention, such as image 3 As shown, the OBADM includes the following four parts:

[0043] 1) Optical amplifier part

[0044] This part includes optical amplifier A (corresponding to the first optical amplifier) ​​and optical amplifier B (corresponding to the second optical amplifier), which are respectively used to amplify the light from the line receiving fiber and the optical signal sent to the line sending fiber. Optical amplifier A and optical amplifier B can be ordinary continuous optical amplifiers, but not necessarily burst optical amplifiers.

[0045] 2) The optical part of the lower business module (corresponding to the lower business module)

[0046] ...

Embodiment 3

[0056] Figure 5 is a schematic diagram of an OBS ring network according to an embodiment of the present invention, such as Figure 4 As shown, this embodiment provides an OBS ring network composed of four OBADM nodes. In this implementation, the optical line contains 5 wavelengths in total: λc and λ1 to λ4, where λc is the BCP channel for the four nodes to send and receive BCP; λ1 is the BDP transmission channel of node 1, and λ2 is the BDP transmission channel of node 2 , λ3 is the BDP sending channel of node 3, and λ4 is the BDP sending channel of node 4. Image 6 It is a schematic diagram of node 1 according to Embodiment 3 of the present invention. The structures of other nodes and node 1 are similar to those of node 1 and will not be repeated here.

[0057] Each node on the ring network can communicate with the other three nodes. In this embodiment, the OBADM node 1 is taken as an example to describe the service processing process of each node.

[0058] Node 1 broadc...

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Abstract

The invention provides an optical burst add drop multiplexer which comprises a wavelength selective switch, a service processing module and a high-speed 1*N optical switch. The wavelength selective switch is used for separating optical signals coming from circuit receiving optical fibers according to wavelengths; the service processing module is used for determining the wavelength of the optical signal which is required to be received according to the optical signals separated by the wavelength selective switch; the high-speed 1*N optical switch is used for transmitting the optical signal with the determined wavelength in the optical signals separated by the wavelength selective switch to the service processing module under the control of the service processing module. According to the optical burst add drop multiplexer, the cost of the optical burst add drop multiplexer is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to an optical burst add-drop multiplexer. Background technique [0002] With the continuous development of network applications and the rapid growth of Internet traffic, the way to complete switching in the electrical signal domain can no longer meet the requirements for high speed, and the speed bottleneck will arise. On this basis, optical switching technology has become the core technology of the next generation optical network. [0003] Optical switching technologies mainly include: Optical Circuit Switching (OCS for short), Optical Packet Switching (OPS for short), and Optical Burst Switching (OBS for short). In OCS, in order to avoid mutual interference between optical channels, different optical channels on the same optical fiber link must have different wavelengths. However, due to the limitation of the number of wavelengths and the two-way reservation mechanism used by OCS, it t...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04J14/02G02B6/34
Inventor 李立强郭向东
Owner ZTE CORP
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