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Optical module and wavelength division multiplexing system

A light wave multiplexing and optical module technology, applied in the field of optical communication, can solve problems such as poor flexibility, complex system, and high power consumption, and achieve the effect of improving integration

Inactive Publication Date: 2012-07-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a traditional 96-wave or 80-wave DWDM system needs as many as 192 or 160 optical transponder units and 192 or 160 fixed-wavelength optical modules in the main line; thus the system is complex, consumes a lot of power, and has poor flexibility and system capacity. Hard to upgrade

Method used

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  • Optical module and wavelength division multiplexing system
  • Optical module and wavelength division multiplexing system
  • Optical module and wavelength division multiplexing system

Examples

Experimental program
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Effect test

Embodiment 1

[0076] Embodiment 1: N=8, M=10

[0077] like Figure 5 As shown, the present embodiment is a block diagram of a 10-channel 8-wave tunable module applied to an 80-wave DWDM system, (N=8 is the number of tunable wavelengths of a single-channel laser, and M=10 is the number of channels of a single module), and the single-channel The bandwidth is 10G. Since the optical device inside the module has integrated a periodic multiplexer, the two sets of signals output to the OCI (Optical Interleaving Unit) with interleaved wavelengths only need to pass through a small grouping multiplexer (two OGMDs (optical Combined splitter) is actually a miniaturized single board). In this way, the whole system only needs 16 modules of the same kind to build an 80-wave DWDM backbone network system.

[0078] The number of optical modules required to build the system can be determined according to the total number of required waves and the number of channels of each optical module. For example, eigh...

Embodiment 2

[0085] Embodiment two: N=8, M=12,

[0086] In this embodiment, the 12-channel 8-wave tunable module is applied to the 96-wave DWDM system trunk line, (N=8 is the number of tunable wavelengths of a single-channel laser, and M=12 is the number of channels of a single module), and the single-channel bandwidth is 10G. Since the optical device inside the module has integrated a periodic multiplexer, the two sets of signals output to the OCI interleaved wavelength only need to pass through a small packet multiplexer in advance (two OGMDs are actually a miniaturized single board ). In this way, the whole system only needs 16 modules of the same kind to build a 96-wave DWDM backbone network system.

Embodiment 3

[0087] Embodiment three: N=10, M=8

[0088] In this embodiment, an 80-wavelength DWDM backbone network system can be constructed by using 20 optical modules.

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Abstract

The invention provides an optical module and a wavelength division multiplexing system. The optical module comprises a photoelectric conversion module and an electro-optical conversion module. The photoelectric conversion module comprises an optical demultiplexing unit (ODU) and M photoelectric conversion units. The ODU is used to divide a received optical signal into M-channel optical signals with a specific rate and output to the corresponding photoelectric conversion units respectively. The photoelectric conversion units are used to convert the received optical signal into an electric signal and then output the electric signal. The electro-optical conversion module comprises M N wave compatible electro-optical conversion units and an optical multiplexing unit (OMU). The electro-optical conversion units are used to modulate the received electric signal into the optical signals with a corresponding wavelength and then output to the OMU. The OMU is used to carry out the multiplexing on the received optical signals and then output the signals. According to the invention, by using the minimum number of the optical modules and with lowest cost and most flexible configuration, the whole dense wavelength division multiplexing (DWDM) and coarse wavelength division multiplexing (CWDM) wave bands can covered.

Description

technical field [0001] The present invention relates to the field of optical communication, in particular to a multi-channel optical module capable of realizing multi-wavelength tunability, especially to a DWDM backbone network system and a CWDM (Coarse Wavelength Division Multiplexing) city in the field of optical communication domain system. Background technique [0002] In the existing technology in the optical communication system, there are many discrete channels, OMU (Optical Multiplexing Unit, Optical Multiplexing Unit) and ODU (Optical Demultiplexing Unit, Optical Demultiplexing Unit), optical fiber connectors and optical fiber couplers and other discrete devices in a single channel There are many, optical communication terminal equipment takes up a lot of space and consumes a lot of power; in addition, in the traditional DWDM (Dense Wavelength Division Multiplexing, dense lightwave multiplexing) system, the transmitting end needs to cover 96 waves, and 96 modules ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 苏展
Owner ZTE CORP