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WDM system channel power dynamic equalization method equalizing optical amplifier thereof

A channel power, wavelength division multiplexing technology, applied in wavelength division multiplexing systems, electromagnetic wave transmission systems, transmission systems, etc.

Inactive Publication Date: 2007-03-14
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0023] The purpose of the present invention is to propose a new method for solving the dynamic equalization problem of WDM system channel power at the deficiencies of the prior art

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  • WDM system channel power dynamic equalization method equalizing optical amplifier thereof
  • WDM system channel power dynamic equalization method equalizing optical amplifier thereof
  • WDM system channel power dynamic equalization method equalizing optical amplifier thereof

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Embodiment Construction

[0084] According to the optical path structure shown in Figure 2, wavelength division multiplexing fiber optic multiplexer MUX21, erbium-doped fiber EDF21, optical isolator ISO22, adjustable optical attenuator VOA, multiplexer MUX22, erbium-doped fiber EDF22, optical isolator ISO23, The fiber grating filter GFF, the multiplexer MUX23, the erbium-doped optical fiber EDF23, the multiplexer MUX24, and the erbium-doped optical fiber EDF24 are sequentially connected, the pumping input end 211 of the multiplexer MUX21, the pumping input end 221 of the MUX22, and the pumping input end 221 of the MUX23 The pumping end 231 and the pumping input end 241 of the MUX41 are respectively connected to pumping sources Pump21 , Pump22 , Pump23 and Pump24 . In order to prevent the influence of light reflection, the free end 212 of the multiplexer MUX21 and the free end 204 of the doped optical fiber EDF24 are respectively connected to the optical isolator ISO21 and ISO24, and are respectively use...

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Abstract

A method for the dynamic balance of the wavelength dividing multiplexing system channel power and an equalizing optical amplifier belong to the technology field of the high speed broadband fiber communication and the optical amplifier. The invention is characterized by utilizing the linear relationship between the channel power variation and the strain of the pumping power and the light attenuation, and integrating the mechanism of flatting the grain spectrum and regulating the grain range and the light amplification. It realizes the flatness of the dynamic gain spectrum and maintains the equalization and the invariableness of the multi-channel output power at the same time. It can be designed independently according to the anticipated system parameters, and is fit for the point-to-point multiple system and the dynamic power balance of the light network simultaneously.

Description

technical field [0001] The method for dynamic equalization of channel power in wavelength division multiplexing WDM system and its equalized optical amplifier belong to the technical field of high-speed broadband optical fiber communication and optical amplifier, and especially relate to the method for dynamic equalization of channel power in WDM optical fiber communication network and its power-balanced erbium-doped optical fiber amplifier EDFA. Background technique [0002] The advent of EDFA (1986) has triggered a major leap in the development of optical fiber communication technology. The WDM transmission technology amplified by EDFA has become the leading direction of the development of optical fiber communication engineering systems today. With the rapid growth of various communication services such as data, voice, image, and multimedia in recent years, optical communication systems continue to develop rapidly in the direction of high speed, large capacity, and long di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04B10/12G02F1/39
Inventor 彭江得冯雪刘小明
Owner TSINGHUA UNIV