Weak light remote pump amplifier based on double 1480nm laser

A technology of pump amplifiers and lasers, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve the problems of complex reliability of weak optical signal amplification systems, high signal-to-noise ratio of remote pump amplifier gain, etc., and achieve easy implementation and application Effect

Pending Publication Date: 2017-06-30
NO 34 RES INST OF CHINA ELECTRONICS TECH GRP +2
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the complex and low reliability shortcomings of the existing weak optical signal amplification system, the purpose of the present invention is to provide a weak optical remote pump amplifier based on dual 1480nm lasers. The amplifier is used as the pump light, and the remote pump amplifier has a higher gain and a higher signal-to-noise ratio

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
  • Weak light remote pump amplifier based on double 1480nm laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The implementation of this faint light remote pump amplifier based on dual 1480nm lasers figure 1 as shown,

[0017] The optical signal transmitted by the optical transmitter Tx passes through the erbium-doped fiber amplifier as the optical power amplifier BA to output an optical signal with a power of 12dBm. After passing through the 100km G.652 single-mode transmission fiber, the loss is 20dB, and the remaining optical signal power is -8dBm, which is sent to the plug-in The detection sensor array SENSORS with a loss of 30dB, the application facility outputs a weak optical signal power of only -38dBm. The weak light signal enters the far-pump amplifier FA. In this example, the far-pump amplifier FA is a passive erbium-doped fiber amplifier. Two lasers with a center wavelength of 1480±2nm and an output power of 30.8dBm to 31.8dBm are used as 1480nm pump sources 1480nmPY, respectively, through two 100km G The .652 single-mode pump transmission fiber is connected to 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 weak light remote pump amplifier based on double 1480nm laser. The weak light remote pump amplifier comprises an optical transmitter, a power amplifier, an optical receiver and a transmission optical fiber. The optical transmitter transmits an optical signal which enters the transmission optical fiber of 75-100km through the power amplifier to be transmitted to an application facility of which the loss is less than or equal to 30dB. Then the weak optical signal outputted by the application facility firstly enters a passive remote pump amplifier and then is transmitted to the optical receiver through the optical signal transmission optical fiber of 75-100km and the optical amplifier. The passive remote pump amplifier is connected with two 1480nm laser acting as pump sources through two pump transmission optical fibers of 75-100km. The suitable weak optical signal power can be lower to -38dBm, and the signal-to-noise ratio of the optical signal reaching the receiver can be 16dB so that the signal-to-noise ratio requirement of the preamplifier can be met, the relative intensity noise can be -100dB and the requirement of the demodulation technology can be met; and implementation and application are easy.

Description

technical field [0001] The invention relates to an optical fiber amplification technology, in particular to a weak light remote pump amplifier based on double 1480nm lasers used in a weak signal amplification system without repeaters. Background technique [0002] In the weak optical signal system, the optical signal is often lower than -30dBm, or even reaches -40dBm, which is generally solved by using active optical amplification. The environment of this kind of weak optical signal system is generally more complicated, and requires a long service life, but some occasions are not suitable for active solutions, and there is a lack of effective amplification means. At present, the implementation scheme of the general weak optical amplifier is complex, requires many technologies to compensate and has low reliability. At present, a preamplifier is often used at the input of the receiver to amplify the weak optical signal, but the optical signal-to-noise ratio of this method can...

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): H04B10/291
CPCH04B10/2912H04B10/2916
Inventor 童章伟刘志强付益曾笑波
Owner NO 34 RES INST OF CHINA ELECTRONICS TECH GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap