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Transmission system based on hybrid optical fiber amplifier

A fiber amplifier and hybrid fiber technology, applied in the direction of fiber transmission, transmission system, electromagnetic wave transmission system, etc., can solve the problem of not being amplified, unable to compensate for the loss of wavelength, occurrence of faults, etc.

Active Publication Date: 2021-12-17
BEIJING UNIV OF POSTS & TELECOMM +2
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Problems solved by technology

[0003] In the current technology, if the signal light in the C+L band is amplified, it must be amplified separately and then combined, so that there will be a loss of several wavelengths, that is, it will not be amplified
In the current technology, there is also a hybrid amplifier composed of a discrete Raman amplifier and an erbium-doped fiber amplifier (EDFA), that is, a combination of a multi-order Raman fiber amplifier and an erbium-doped fiber amplifier. loss, fault

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  • Transmission system based on hybrid optical fiber amplifier
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  • Transmission system based on hybrid optical fiber amplifier

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[0052] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0053] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps that are closely related to the solution according to the present invention are shown in the drawings, while those related to the present invention are omitted. Other details are not relevant to the invention.

[0054] It should be emphasized that the term "comprising / comprising" when used herein refers to the presence of a feature, element, step or component, but does not exclude the presence or addition of one or more other featur...

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Abstract

The invention provides a transmission system based on a hybrid optical fiber amplifier, and the system comprises: an erbium-doped optical fiber amplifier which is used for amplifying optical signals of a C wave band and an L wave band in an optical signal; a first-order Raman optical fiber amplifier, wherein the output end of the erbium-doped optical fiber amplifier is connected with the input end of the first-order Raman optical fiber amplifier, and the first-order Raman optical fiber amplifier is used for amplifying a wave band which is not amplified by the erbium-doped optical fiber amplifier in the optical signal; a second-order Raman optical fiber amplifier, wherein the input end of the second-order Raman optical fiber amplifier is connected with the output end of the first-order Raman optical fiber amplifier, and the C + L wave band optical signal is further amplified. The erbium-doped optical fiber amplifier is used for amplifying a C wave band and an L wave band in the optical signal, but wavelength loss easily occurs, so that the first-order Raman optical fiber amplifier is added behind the erbium-doped optical fiber amplifier, full wave bands can be amplified, the wavelength loss caused by the erbium-doped optical fiber amplifier can be made up, the second-order Raman optical fiber amplifier is connected, The transmission system is suitable for long-distance relay-free transmission.

Description

technical field [0001] The invention relates to the technical field of optical amplifiers, in particular to a transmission system based on a hybrid optical fiber amplifier. Background technique [0002] With the continuous development of optical communication technology, the requirements of communication services have also become diversified, which puts forward higher requirements on the existing optical transmission technology. When transmitting information over long-distance optical fibers, the traditional technology requires a large number of optical relay stations to amplify the loss in long-distance optical fiber transmission, but this will increase construction costs and daily maintenance costs. The remote pump technology is suitable for this kind of long-distance non-relay optical fiber transmission, and the technology is already very mature. Raman fiber amplifier (RFA) is an important device to realize ultra-large capacity and ultra-long-distance transmission. At p...

Claims

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Application Information

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IPC IPC(8): H04B10/25H04B10/291
CPCH04B10/25H04B10/2916
Inventor 忻向军常天海毛正王光全田凤刘博张琦顾宇姚海鹏秦健柯田清华李志沛郭栋常欢
Owner BEIJING UNIV OF POSTS & TELECOMM
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