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Multi-wavelength dispersion/dispersion slope compensator and its making method

A dispersion compensator and slope compensation technology, which is applied in the coupling of optical waveguides, wavelength division multiplexing systems, electromagnetic wave transmission systems, etc., can solve the problems of unresolved dispersion slope compensation, unadvanced technology, complex structure, etc., and achieve reduction The effect of production complexity, advanced technology, and small size

Inactive Publication Date: 2002-12-04
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology

However, the use of multiple circulators and multiple independent gratings does not exceed the scope of the prior art, and there are still problems of complex structure, large volume, high cost, and unadvanced technology, and the problem of dispersion slope compensation is not solved at the same time.

Method used

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  • Multi-wavelength dispersion/dispersion slope compensator and its making method
  • Multi-wavelength dispersion/dispersion slope compensator and its making method
  • Multi-wavelength dispersion/dispersion slope compensator and its making method

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Embodiment approach

[0028] The first type: if Figure 4 As shown, the dispersion compensator is composed of gratings 1-4 with linear graded chirped structure. The grating spatial period of each graded grating is distributed linearly, and the chirp amount and length of each graded grating are consistent. This form of grating has the same amount of dispersion in each channel, which can be used to compensate the low-order dispersion (chromatic dispersion) of the system.

[0029] The second type: if Figure 5 As shown, the dispersion compensator is composed of gratings 2-4 with linear graded chirped structure. The spatial period of each graded grating is distributed linearly, and the chirp amount or length of each graded grating is different. The amount of dispersion of this form of grating is different between channels, which can be used to compensate the low-order dispersion (dispersion) difference caused by the high-order dispersion (dispersion slope) of the system on each channel.

[0030] The ...

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Abstract

The invention discloses the multiple wavelength chromatic dispersion / dispersion slope compensator and its producing method. One circulator connected to one super classifying chirp grating is used to produce the compensator. The super classifying chirp grating is the integrated grating having multi-section periods and staged chirp structure. The number of the sections is corresponding to the number of the total channels. Different compensation quantity of the different channels can be obtained by controlling the grating length of each staged grating and chirping quantity so as to realize different dispersion / dispersion slope compensation for each channel. The wavelength intervals include any ITU-T conventional wavelength interval and the number of the channel includes any ITU-T conventional number of the channel.

Description

technical field [0001] The invention relates to a multi-wavelength dispersion / dispersion slope compensator and a manufacturing method thereof, which is a multi-wavelength dispersion / dispersion slope compensator based on an optical fiber Bragg grating, and can perform multiple wavelengths / channels input in a dense wavelength division multiplexing system Dispersion and dispersion slope compensation for high-speed optical signals. Background technique [0002] Optical fiber attenuation and dispersion are two factors that limit the transmission of optical signals in optical fibers. At present, the attenuation of optical fiber has been effectively solved by technologies such as EDFA and Raman amplifier. With the improvement of optical transmission rate (10Gb / s or 40Gb / s) and the extension of transmission distance, the limitation of optical fiber dispersion on optical transmission has attracted more and more attention. [0003] Dispersion is the natural bro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/34H04B10/2525H04J14/02
Inventor 许远忠林谦施伟
Owner GUANGXUN SCI & TECH WUHAN
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