Dispersion compensator of ultra-high capacity optical transmission system

A technology of dispersion compensation and optical transmission, which is applied in the transmission system, electromagnetic wave transmission system, optical waveguide coupling, etc., and can solve problems such as hindering practical application, limited compensation range, complex control circuit, etc.

Active Publication Date: 2011-07-20
青岛自贸激光科技有限公司
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Problems solved by technology

The current solution stays in the expensive single-channel tunable dispersion compensation technology. Because the filter-based design is adopted, such as optical fiber optical deletion, virtual imaging array, etc., they all have high cost, single channel, and compensation range. Limited, complex control circuits, incomplete compensation and other challenges greatly hinder practical applications

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  • Dispersion compensator of ultra-high capacity optical transmission system
  • Dispersion compensator of ultra-high capacity optical transmission system
  • Dispersion compensator of ultra-high capacity optical transmission system

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Embodiment Construction

[0041] A dispersion compensation device for an ultra-high-capacity optical transmission system, which is composed of four compensation units, and is characterized in that: every two compensation units are connected in series to form an integral device, and then the two devices connected in series to form an integral device are inserted into the optical fiber selected in the central computer room in the passage. By adjusting the dispersion parameters of the four compensation units, the fourth-order compensation for the dispersion of a certain fiber to be compensated is realized, in other words, the dispersion, the slope of the dispersion and the fourth-order nonlinear dispersion of the compensated fiber are simultaneously compensated.

[0042] The dispersion parameter D of the first and second two compensation units in the four compensation units 1 ,D 2 , S 1 , S 2 , L 1 , L 2 The choice of Dt / St=(D 1 L 1 +D 2 L 2 ) / (S 1 L 1 +S 2 L 2 ), then Dt and St are the dispe...

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Abstract

The invention relates to a dispersion compensation device for an ultra-high capacity optical transmission system and a method thereof. The device consists of four compensation units, can realize fourth-order dispersion compensation for transmitting optical fiber dispersion, and simultaneously effectively compensates for transmission optical fiber because of chromatic dispersion caused by manufacturing technology and random error of chromatic dispersion gradient, thereby realizing fourth-order dispersion compensation for all band of arbitrary optical fiber types and arbitrary fiber lengths so as to carry out high precision compensation for all channels of a DWDM optical system one time. As the invention can provide ultra-high precision dispersion compensation of the high capacity DWDM transmission system higher than 100G / channel, the optical network can realize one-off upgrading and solve dispersion problems of a fiber circuit for a full due.

Description

technical field [0001] The invention relates to a dispersion compensation device for an ultra-high-capacity optical transmission system. Background technique [0002] At present, the dispersion compensation technology in the market is dominated by dispersion compensation fiber (DCF), accounting for more than 90% of the market. Others include optical fiber optics (FBG), virtual imaging (VIPA), and electrical compensation (EDC). In addition to DCF, other dispersion compensation technologies are single-channel compensation, which has high cost and complicated packaging, and is not suitable for large-scale use. Moreover, it is related to the transmission speed of the system. When the system capacity is upgraded, it must be replaced at the same time. DCF has low cost and is widely used. It is one of the main technologies for upgrading the network from 2.5G to 10G. However, the accuracy provided by the current DCF products has a huge gap from 100G. The dispersion tolerance (toler...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/18G02B6/34H04B10/2525
Inventor 曹祥东
Owner 青岛自贸激光科技有限公司
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