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Optimization system and method for receiving ground noise in optical fiber transmission link

An optical fiber transmission and link technology, used in transmission systems, electromagnetic wave transmission systems, electromagnetic receivers, etc., can solve problems such as inability to optimize, and achieve the effects of low signal flatness, guaranteed communication quality, and high signal-to-noise ratio.

Pending Publication Date: 2021-11-30
成都金迈微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem in the prior art that the low-noise reception in the high-frequency band of the optical fiber transmission link cannot be optimized, and to provide an optimization system for the reception noise floor in the optical fiber transmission link

Method used

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  • Optimization system and method for receiving ground noise in optical fiber transmission link
  • Optimization system and method for receiving ground noise in optical fiber transmission link
  • Optimization system and method for receiving ground noise in optical fiber transmission link

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Embodiment 1

[0038]In order to solve the problem in the prior art that it is impossible to optimize the low-noise reception in the high-frequency band of the optical fiber transmission link, this implementation provides an optimization system for receiving the noise floor in the optical fiber transmission link. The system includes a transmitting end and a receiving end, and the transmitting end It includes a gain compensation circuit for compensating the gain of the high frequency band of the signal, so that the gain of the low frequency band is low and the gain of the high band is high. The receiving end includes a gain compression circuit for compressing the gain of the high band of the signal, even if the gain of the low frequency band is high The gain of the high-frequency band is linearly reduced, so that the output noise floor of the high-frequency band is lower than that of the original optical fiber link, and the low noise of the whole frequency band shows a flat trend, which ensures...

Embodiment 2

[0050] This implementation is to solve the problem in the prior art that it is impossible to optimize the low-noise reception in the high-frequency band of the optical fiber transmission link, and provides an optimization system for the reception noise floor in the optical fiber transmission link, which has the same inventive concept as Embodiment 1. The system includes a transmitting end and a receiving end. The transmitting end includes a gain compensation circuit for compensating the gain of the high frequency band of the signal. Gain compression circuit, even if the gain in the low frequency band is high and the gain in the high frequency band is linearly reduced, the output noise floor in the high frequency band is lower than that of the original optical fiber link, and the low noise in the whole frequency band shows a flat trend, which ensures the gain flatness and makes the system signal flatness Small, high signal-to-noise ratio, ensuring communication quality.

[0051...

Embodiment 3

[0054] In order to solve the problem in the prior art that the low-noise reception in the high-frequency band of the optical fiber transmission link cannot be optimized, this implementation provides a method for optimizing the reception noise floor in the optical fiber transmission link, which has the same inventive concept as Embodiment 1. Methods include:

[0055] A gain compensation circuit is set at the transmitting end and a gain compression circuit is set at the receiving end. The gain compensation circuit compensates the gain of the high frequency band of the signal, and the gain compression circuit compresses the gain of the high frequency band of the signal, so that the output noise floor of the high frequency band is relatively low. The original optical fiber link drops, which in turn makes the signal flatness of the system small and the signal-to-noise ratio high, ensuring the communication quality.

[0056] Further, the gain compensation circuit is specifically the...

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Abstract

The invention discloses an optimization system and method for receiving ground noise in an optical fiber transmission link, and belongs to the technical field of optical fiber transmission of analog signals. The system comprises a transmitting end and a receiving end, the transmitting end comprises a gain compensation circuit used for compensating signal high-frequency band gain, and the receiving end comprises a gain compression circuit used for compressing the high-frequency band gain of the signal. The transmitting end of the system comprises a gain compensation circuit, the receiving end of the system comprises a gain compression circuit, the gain compensation circuit compensates signal high-frequency-band gain, and the gain compression circuit compresses the signal high-frequency-band gain, so that the output ground noise of the high frequency band is reduced compared with that of an original optical fiber link, the signal flatness of the system is small, the signal-to-noise ratio is high, and the communication quality is ensured.

Description

technical field [0001] The invention relates to the technical field of optical fiber transmission of analog signals, in particular to a system and method for optimizing reception noise floor in an optical fiber transmission link. Background technique [0002] In modern communication technology, the bandwidth requirements of analog electrical signals in optical fiber transmission links are getting higher and higher, reaching hundreds of megahertz or even several gigahertz. As the bandwidth is wider, the sum of the received noise floor is higher, especially the high frequency band has the greatest influence on the floor noise. However, the noise floor of laser devices in the high-frequency band is higher than that in the low- and middle-frequency bands. Usually, in a gigahertz-order bandwidth link, the high-frequency band will be several decibels higher than the low-frequency band. Therefore, optimizing the noise in the high-frequency band The noise floor of the system is of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/69H04B10/50
CPCH04B10/697H04B10/6971H04B10/6972H04B10/50H04B10/503
Inventor 王波
Owner 成都金迈微科技有限公司
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