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Preferential choice method for wave length scheme of G.653 optical fiber WDM system

A wavelength and fiber technology, applied in the field of wavelength scheme of G.653 fiber WDM system

Active Publication Date: 2010-12-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] It is worth noting that the system transmission performance of the wavelength scheme is related to the zero-dispersion wavelength of G.653 fiber. When the zero-dispersion wavelength is in the middle of the bandwidth range, its performance worse

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  • Preferential choice method for wave length scheme of G.653 optical fiber WDM system
  • Preferential choice method for wave length scheme of G.653 optical fiber WDM system
  • Preferential choice method for wave length scheme of G.653 optical fiber WDM system

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Embodiment Construction

[0038] WDM system wavelength design should generally follow the ITU-T recommendation G.694.1. In the specific embodiment, preferably 16 waves (C 80 16 ) and preferably 40 waves (C 80 40 ) as an example for illustration.

[0039] Step 1: Set system parameters.

[0040] The number of wavelengths that can be selected by the system is 80, and the preferred number of wavelengths is 40. In this paper, the wavelength of 192.1THz is recorded as number 1, 192.15THz is number 2, and so on until 196.05THz is number 80.

[0041] Considering that the 40-wave WDM system can transmit less spans and the calculation time of 40 waves is longer, the number of simulation spans is set to 2, and each span is 80km. If it is a preferred 16-wave WDM system, the number of spans can be designed to be 8.

[0042] Considering the attenuation of the actual engineering fiber, the design fiber attenuation coefficient is 0.20dB / km. The smaller the fiber attenuation coefficient, the greater the FWM mix...

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Abstract

The invention discloses a wavelength proposal optimization method in a G.653 optical fiber WDM system, relating to a working wavelength optimization method in a G.653 optical fiber wavelength division multiplexing (WDM) system. The system can efficiently reduce the FWM crosstalk of the wavelength proposal optimization method in the G.653 optical fiber WDM system. The method in the invention comprises the following steps: step 1, the system parameter of the G.653 optical fiber C band is set; step 2, the wavelength of the C band is optimized through calculation. The invention sets the system parameter and then calculates to get the wavelength proposal by utilizing the related parameters, thereby being able to select multiple wavelength number. The invention is able to simulate the actual optical parameters during parameters setting so as to improve the adaptability of the wavelength in the actual engineering.

Description

technical field [0001] The present invention relates to the optimization method of the working wavelength in the G.653 optical fiber wavelength division multiplexing system (WDM), in particular to the optimal method of the wavelength scheme of the G.653 optical fiber WDM system which can effectively reduce the FWM crosstalk by optimizing the selection of the C-band wavelength. Background technique [0002] The transmission optical fiber of optical fiber communication has experienced the development process from multimode to single mode, from G.652->G.653->G.655. Although the loss of G.652 fiber is small, its dispersion is large in the window of 1550nm; although the dispersion of G.653 fiber is small in the window of 1550nm, it is easy to produce four-wave mixing (FWM) effect in WDM system, causing serious transmission damage. At present, Japan, Latin America and other countries have laid a large number of G.653 optical fibers. How to transmit WDM systems on G.653 optic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/12H04J14/02H04B10/18
Inventor 沈百林李红军
Owner ZTE CORP