Automatic power adjusting method and device in optical fiber communication system
An optical fiber communication system and automatic adjustment technology, applied in the field of network communication, can solve the problems of increased bit error rate and system instability, and achieve the effects of low difficulty, good operability and little system impact
Inactive Publication Date: 2016-07-27
ZTE CORP
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[0003] The main purpose of the present invention is to provide a method and device for automatically adjusting power in an optical fiber communication system, aiming to solve the problem of system instability and bit errors caused by the attenuation of each optical relay node in a long-distance and multi-span optical fiber communication system rate increase problem
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[0042] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0043] The invention provides a method for automatically adjusting power in an optical fiber communication system, referring to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for automatically adjusting power in the optical fiber communication system of the present invention. In the first embodiment, the method for automatically adjusting power in the optical fiber communication system provided by the present invention includes the following steps:
[0044] Step S100, acquiring the attenuation of the optical fiber in each span.
[0045] Such as figure 2 as shown, figure 2 It is a schematic structural diagram of an optical fiber communication system that automatically adjusts power in the present invention, in figure 2 In the above, the optical fiber communication system fo...
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The invention discloses an automatic power adjusting method in an optical fiber communication system. The attenuation value of an optical fiber in each cross section is acquired. According to acquired attenuation value of an optical fiber in each cross section, the gain of an optical amplifier or an attenuator of a relay node in a corresponding cross section is adjusted. The invention further discloses an automatic power adjusting device in the optical fiber communication system. According to the invention, the device automatically adjusts the gain of a power amplifier and the attenuator according to line attenuation; power changes, which are caused by optical fiber aging and other problems, of a receiving end are prevented; automatic control and real-time power adjustment are realized; and compared with manual adjustment, the method and the device have the advantages of great operability, low difficulty and small impact on a system.
Description
technical field [0001] The invention relates to the field of network communication, in particular to a method and device for automatically adjusting power in an optical fiber communication system. Background technique [0002] In the current optical fiber communication system, the power of the optical amplifier and the attenuation of the optical attenuator of each optical relay node are fixed after the system is built, and will not be adjusted at any time. Only when the attenuation of the optical fiber causes fission in the performance of the optical receiver, the power of some amplifiers will be manually adjusted. The change of attenuation due to aging and other reasons is a slow process, and the change value is not large for a single span. For example, the change of fiber attenuation in a system within 5 years is 0.1dB / Km, which is difficult for maintenance personnel to detect This kind of change makes it impossible to adjust in a targeted manner, that is, to ensure that ...
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Login to View More IPC IPC(8): H04B10/293H04B10/25
CPCH04B10/564
Inventor 张立军
Owner ZTE CORP