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Optical transmission system capable of managing waveform

A technology of optical transmission and waveform, applied in the field of optical transmission system, can solve the problems of insufficient attention to the influence of SPM effect, different ability to resist SPM effect, etc., achieve the effect of ingenious structure, easy implementation, and enhanced transmission performance

Inactive Publication Date: 2006-04-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient attention is paid to the influence of pulse waveform changes on the SPM effect
In fact, under the condition of the same average power, different waveforms have different abilities to resist the SPM effect

Method used

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  • Optical transmission system capable of managing waveform
  • Optical transmission system capable of managing waveform
  • Optical transmission system capable of managing waveform

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Embodiment Construction

[0014] Such as figure 2 As shown, the present invention includes a sequentially connected optical transmitting module, a transmission link and a receiving module, and a pre-waveform adjustment module that can adjust the waveform or phase of the optical pulse entering the optical fiber and can adjust the waveform or phase of the optical pulse output from the optical fiber. A phase post-waveform adjustment module, wherein the transmission link unit is composed of a transmission fiber, an amplification module and a dispersion compensation module. The amplification module compensates for the loss of the optical fiber, and the dispersion compensation module compensates for the dispersion in the optical fiber. For long-distance transmission systems, it is actually the continuous repetition of transmission link units. The front-end waveform adjustment module is connected in series between the optical transmitting module and the optical transmission link. Wherein the front waveform...

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Abstract

The system includes the optical emission module connected in sequence, transmission link and the receiving module. The characters are that the system also includes a prepositive waveform adjustment module. The adjustment module cascaded between the optical emission module and the transmission link can adjust the waveform or phase of an optical pulse entered into an optical fiber. The prepositive waveform adjustment module changes the waveform in optical fiber effectively without need of changing code form. Thus, the nonlinear effect in an optical transmission system is restrained by changing the waveform of optical pulses without need of changing the input power of optical pulses so as to enhance the transmission performances of the transmission system. The invention makes the transmission link features periodic waveform as well as providing the advantages of smart structure, easy of implementation, and high practicability.

Description

technical field [0001] The invention relates to an optical transmission system, in particular to a high-speed dense wavelength division multiplexing system which can improve transmission performance. Background technique [0002] For 2.5Gbit / s, 10Gbit / s and higher rate backbone network WDM (Dense Wavelength Division Multiplexing) systems, figure 1 It is a schematic diagram of a 10Gbit / s optical transmission system, such as figure 1 As shown, the optical transmission system consists of a transmitting module, a transmission link and a receiving module. The transmission link unit is composed of a transmission optical fiber, an amplification module and a dispersion compensation module. The amplification module compensates for the loss of the optical fiber, and the dispersion compensation module compensates for the dispersion in the optical fiber. For long-distance transmission systems, it is actually the continuous repetition of transmission link units. As the transmission d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04B10/12H04B10/25
Inventor 余力李长春
Owner HUAWEI TECH CO LTD