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Loop-tunable dispersion compensation method and device

A dispersion compensation and loop technology, which is applied in the field of loop tuning dispersion compensation methods and devices, can solve the problems of large optical fiber loss, large volume, and inability to change the amount of negative dispersion, and achieve the effect of reducing usage

Active Publication Date: 2016-11-09
上海光织科技有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, due to the structural characteristics of DCF itself, the fiber loss is large, the volume is large, and the amount of negative dispersion produced by it cannot be changed

Method used

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  • Loop-tunable dispersion compensation method and device

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Embodiment 1

[0022] Such as figure 1 As shown, the loop tuning dispersion compensation device of this embodiment includes: a DCF and an optical switch as an input end and an output end, wherein: both ends of the DCF are respectively connected to an optical switch to form a loop, and the optical switch is a 2×2 optical switch. The 2×2 optical switch is controlled by an electrical signal from an external square wave generator.

[0023] The loop tuning dispersion compensation method in this embodiment includes first forming the DCF into a loop, then the optical signal is input into the loop from the loop input end and circulated therein, and finally, the optical signal after several times of dispersion compensation is passed through the loop output of the output.

[0024] The square wave generator is a single-chip microcomputer development board, such as a field programmable gate array (FPGA), or an arbitrary waveform generator. At the output end of the loop, the optical signal in the loop ...

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Abstract

The invention relates to a loop-tunable dispersion compensation method and device. An optical signal is input into a loop through the input end of the loop composed of a DCF, and circulates in the loop; and the optical signal after dispersion compensation for several times is output through the output end of the loop. According to the loop-tunable dispersion compensation method and device disclosed by the invention, the DCF loop is equivalent to a DCF long link; the use amount of the DCF is reduced; the relatively high compensation amount is generated; simultaneously, tunableness of the dispersion compensation amount can be realized by changing the control signal of an optical switch; and the loop-tunable dispersion compensation method and device can realize seamless compatibility with the existing optical fibre network.

Description

technical field [0001] The invention relates to a technology in the field of optical fiber communication, in particular to a loop tuning dispersion compensation method and device. Background technique [0002] In optical fiber communication, the impact of dispersion and nonlinear effects on signals is becoming more and more prominent. The higher the transmission rate, the greater the effect of dispersion. Dispersion Compensation Fiber (DCF), as a passive dispersion compensation component, can simultaneously compensate for first-order dispersion and second-order dispersion. However, due to the structural characteristics of the DCF itself, the optical fiber has a large loss and a large volume, and the amount of negative dispersion generated by it cannot be changed. Contents of the invention [0003] The present invention aims at the defect that the existing technology can only achieve 2 times the improvement of the dispersion compensation ability, and it is a fixed dispers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2525
CPCH04B10/2525
Inventor 何祖源杜江兵马麟张文甲郑欣
Owner 上海光织科技有限公司
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