Electronic chromatic dispersion compensation equalizer for optical communication and tap regulation method

An electronic dispersion and equalizer technology, which is applied in the direction of electrical components, electromagnetic wave transmission systems, transmission systems, etc., can solve the problems of complex system structure and increase the difficulty of engineering realization, and achieve good anti-interference effect, superior performance, and offset signal interference. Effect

Inactive Publication Date: 2009-05-06
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

However, due to the addition of the feedback network, the system structure is more complex and the difficulty of engineering implementation is increased.

Method used

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  • Electronic chromatic dispersion compensation equalizer for optical communication and tap regulation method
  • Electronic chromatic dispersion compensation equalizer for optical communication and tap regulation method
  • Electronic chromatic dispersion compensation equalizer for optical communication and tap regulation method

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Embodiment Construction

[0035] In order to reduce the complexity of the electronic dispersion compensation equalizer, achieve the equalization effect of the decision feedback equalizer, and improve the feasibility of the project, the present invention performs linear splitting on the decision feedback equalizer. The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] Such as figure 2As shown, the electronic dispersion compensation equalizer for optical communication provided by the present invention includes first and second linear filters 1, 1', and the two linear filters have the same structure.

[0037] The specific implementation method is that the input signal 10 forms a signal 11 through the delayer 4.1, and the signal 10 is the data at the current moment, then the signal 11 is the data at the next moment of the signal 10, each signal is multiplied by a tap coefficient respectively, and the signal 10 multiplied by the tap factor ...

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Abstract

The invention discloses an electronic chromatic dispersion compensation equalizer for optical communication and a method for adjusting a tap thereof. The electronic chromatic dispersion compensation equalizer comprises two symmetrical linear equalizers arranged at a transmitting terminal and a receiving terminal respectively. The structure of the chromatic electronic dispersion compensation equalizer is simpler than a decision feedback equalizer, and the performance of the chromatic electronic dispersion compensation equalizer is better than the linear equalizer. The invention adopts linear fragmentation algorithm to arrange symmetric linear equalizers at the transmitting and the receiving terminals respectively so as to acquire better anti-interference effect than normal linear equalizers and reduce complexity of the system. The invention further uses adjustment step factors to adjust the tap coefficient of the equalizer, and the method is simple in algorithm and good in convergence effect.

Description

technical field [0001] The present invention is a highly integrated optical network chip with electronic dispersion compensation (EDC) technology used in optical communication systems. It does not use traditional optical domain compensation for signal damage in optical transmission, but converts it into electrical signals After that, power domain equalization is performed. Background technique [0002] The current long-distance and metropolitan SONET OC-192 (10Gbps) optical link can only reach a distance of about 80km using single-mode fiber (SMF), mainly due to the influence of optical fiber dispersion and nonlinearity on signal transmission. Transmission in the optical fiber causes dispersion due to the different group velocities of different frequencies or different mode components, which makes the optical signal pulse broaden and the intensity decrease, thereby increasing the bit error rate and affecting the communication quality. Analyzed from the mechanism, the disper...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/18H04B10/2525
Inventor 雷鑑铭鲁 力邴林林杨 选邹志革邹雪城鲁力杨选
Owner HUAZHONG UNIV OF SCI & TECH
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