Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Repeaterless transmission system provided with composite common pump source

A transmission system and composite pump technology, applied in transmission systems, electromagnetic wave transmission systems, optical fiber transmission, etc., can solve problems such as system errors, transmission signal interference, and small gain, to save costs, improve transmission performance, and increase transmission distance Effect

Active Publication Date: 2017-09-15
WUXI TACLINK OPTOELECTRONICS TECH CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the main disadvantage of the same-directional Raman amplification technology is that the gain provided is relatively small, generally only 4-8dB, which cannot meet the requirements of longer transmission spans
Although the remote pump amplification technology can provide a certain gain, if the pump power exceeds 1W, serious spontaneous Raman lasing will be generated in the optical fiber, causing interference to the transmission signal, causing bit errors in the system, and the pump power cannot be increased. Limits the further improvement of the transmission span

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Repeaterless transmission system provided with composite common pump source
  • Repeaterless transmission system provided with composite common pump source
  • Repeaterless transmission system provided with composite common pump source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment one, such as figure 1 As shown, an unrepeated transmission system with a composite shared pump source has two opposite transmission directions, as figure 1 From east to west, from west to east, these two transmission directions are referred to as forward and reverse in the present invention; note that the reverse meaning of the transmission direction in the present invention is different from the reverse meaning of the reverse Raman amplifier , the latter refers to the reverse pumping mode of the Raman amplifier; the name of the remote gain module in the present invention is named after the transmission direction;

[0052] The repeaterless transmission system includes:

[0053] The first transmitting end, the first signal pumping combiner, the first compound pumping source, the first receiving end, and the second signal pumping combiner; these devices are located in figure 1 On the east side, the first signal pump combiner is WDM1 on the east side, and the ...

Embodiment 2

[0081] Embodiment two, such as Figure 4 As shown, the pump light of the first reverse remote gain module RGU11 and the first forward remote gain module RGU1 can also be transmitted to the corresponding remote gain modules RGU11 and RGU1 by using a bypass fiber, so the second signal pumping oscillator and the third signal pump combiner do not need to be set;

[0082] The repeaterless transmission system includes:

[0083] The first transmitting end, the first signal pumping combiner, the first compound pumping source, and the first receiving end; these devices are located in Figure 4 On the east side, the first signal pump combiner is WDM1 on the east side; the first composite pump source is located on the east side;

[0084] The second receiving end, the second composite pumping source, the second transmitting end, and the fourth signal pumping combiner; these devices are located in Figure 4 On the west side, the fourth signal pump combiner is WDM1 on the west side; the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a repeaterless transmission system provided with a composite common pump source. The repeaterless transmission system has two opposite transmission directions, and comprises a first transmitting end, a first signal pump combiner, a first composite pump source, a first receiving end and a second signal pump combiner which are arranged on one side of the transmission system, and a second transmitting end, a third signal pump combiner, a second composite pump source, a second receiving end and a fourth signal pump combiner which are arranged on the other side of the transmission system, wherein the first transmitting end is used for generating signal light in a forward transmission direction, and the second transmitting end is used for generating signal light in a reverse transmission direction; and each of the first composite pump source and the second composite pump source comprises a 1-order pump source, a 2-order pump source and a 3-order pump source, the 1-order pump source is used for generating 1-order pump light, the 2-order pump source is used for generating 2-order pump light, and the 3-order pump source is used for generating 3-order pump light. According to the repeaterless transmission system, the transmission distance of the repeaterless transmission system is prolonged, the system transmission cost is saved, and the transmission performance can also be improved.

Description

technical field [0001] The invention relates to a transmission system, especially an optical transmission system. Background technique [0002] In submarine transmission or special applications on land, due to natural conditions, it is impossible to establish an active relay and monitoring system in the transmission link; or the operation and maintenance costs after using active relay are unaffordable for operators It is necessary to increase the single-span non-relay transmission distance. The absorption and scattering of the optical fiber cause the attenuation of the optical signal, and the dispersion of the optical fiber causes pulse broadening, which reduces the optical signal-to-noise ratio, increases the bit error rate, and limits the transmission distance of the communication system. The main limiting factor of the transmission distance without repeaters: signal power limitation (the signal power at the receiving end is too low to meet the minimum sensitivity require...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25H04B10/291H04B10/293H04B10/297
CPCH04B10/25H04B10/2912H04B10/293H04B10/297
Inventor 迟荣华李现勤
Owner WUXI TACLINK OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com