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Limit method and device for nonlinear effect of dense wavelength division multiplexing (DWDM) system

A dense wavelength division multiplexing and non-linear effect technology, applied in the field of communication, can solve the problem of system transmission performance degradation and achieve the effect of improving transmission performance

Inactive Publication Date: 2011-01-05
ZTE CORP
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for limiting the nonlinear effect of the DWDM system, to at least solve the above-mentioned problem that when the nonlinear effect of the system exceeds the threshold that the system can tolerate, the system transmission performance will be sharp falling problem

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  • Limit method and device for nonlinear effect of dense wavelength division multiplexing (DWDM) system
  • Limit method and device for nonlinear effect of dense wavelength division multiplexing (DWDM) system
  • Limit method and device for nonlinear effect of dense wavelength division multiplexing (DWDM) system

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[0015] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0016] In the DWDM system, the nonlinear effect has become the main factor affecting the performance of the dense wavelength division multiplexing system. Once the nonlinear effect exceeds the threshold that the system can tolerate, the system transmission performance will drop sharply. Therefore, it is necessary to consider the nonlinear effects of high-speed, ultra-long distance, and dense wavelength division multiplexing system engineering design before system construction to limit the nonlinear effects of the DWDM system. The following embodiments of the present invention are implemented in the above-mentioned DWDM system.

[0017] figure 2 It is a flow chart of a method for limiting nonlinear...

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Abstract

The invention discloses a limit method and a device for the nonlinear effect of a dense wavelength division multiplexing (DWDM) system, wherein the method comprises the following steps: acquiring the characteristic parameter of the nonlinear effect of the DWDM system, wherein the characteristic parameter comprises the nonlinear phase and / or accumulated power of the DWDM system; and comparing the acquired characteristic parameter with the preset parameter threshold, and when the characteristic parameter is not smaller than the parameter threshold, adjusting the configuration of the DWDM system so as to reduce the nonlinear effect. The invention restricts the nonlinear effect of the system, and improves the transmission performance of the system.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for limiting the nonlinear effect of a dense wavelength division multiplexing system. Background technique [0002] The combined application of dense wavelength division multiplexing (Dense Wavelength Division Multiplexing, DWDM) and Erbium-doped Optical Fiber Amplifier (EDFA) is the best way to fully tap the fiber bandwidth capability and realize large capacity, high speed, and long-distance communication. best means. figure 1 A typical block diagram of a dense wavelength division multiplexing system is shown, where 1 is the M wavelength division multiplexing transmitters (TX1,...,TXM) of the optical terminal station at the transmitting end, and 2 is the wavelength division multiplexing transmitters (TX1, ..., TXM) of the optical terminal station at the transmitting end. Multiplexer (MUX) and optical amplifier (OA), 3 is the transmission fiber, 4 is the optical amp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/18H04Q11/00H04B10/2543
Inventor 沈百林
Owner ZTE CORP