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

A hybrid multimode amplifier based on mm-edfa and its realization method

A technology of MM-EDFA and its realization method, which is applied in the directions of instruments, lasers, phonon exciters, etc., can solve the problem of no wavelength-dependent gain analysis, etc., and achieve the effects of flat gain, improved amplification performance, and easy operation.

Active Publication Date: 2020-11-27
TONGJI UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the article only analyzes the performance of multi-mode amplification for a single wavelength signal, and does not analyze the wavelength-dependent gain. The realization in the wavelength division multiplexing (Wavelength Division Multiplexing, WDM) system needs further research.

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
  • A hybrid multimode amplifier based on mm-edfa and its realization method
  • A hybrid multimode amplifier based on mm-edfa and its realization method
  • A hybrid multimode amplifier based on mm-edfa and its realization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0041] Such as figure 1As shown, the present application proposes a hybrid multimode amplifier based on MM-EDFA, including: a first mode division multiplexing device, which is used to multiplex input signals to different transmission paths according to a specified mode group for transmission; The device is connected with the first mode division multiplexing device, including a multimode Erbium-Doped Fiber Amplifier (Multimode Erbium-Doped Fiber Amplifier, MM-EDFA) and an adjustable attenuator (Variable Optical Attenuator, VOA), a multimode Erbium-Doped Fiber Amplifier and The adjustable attenuators are connected into one channel, and multiple channels are arranged in parallel. Multiple MM-EDFAs are used to amplify the signals of different mode groups with erbium, and multiple VOAs are used to attenuate the higher power signal mode groups respectively, so that Reduce the inter-mode gain; the second mode division multiplexing device is connected with the erbium-doped amplifying ...

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 relates to a mixed multimode amplifier based on a multimode erbium-doped fiber amplifier (MM-EDFA) and an implementation method of the mixed multimode amplifier. The mixed multimode amplifier comprises a first division multiplexing device, an erbium-doped amplifying device, a second division multiplexing device and a gain equalization device, wherein the first division multiplexing device multiplexes input signals to different transmission paths according to a specific mode group for transmission; the erbium-doped amplifying device is connected with the first division multiplexing device, and comprises MM-EDFAs and variable optical attenuators, each MM-EDFA and the corresponding variable optical attenuator are mutually connected into one path, and the multiple paths of the MM-EDFAs and the variable optical attenuators are arranged parallelly; the second division multiplexing device is connected with the erbium-doped amplifying device to multiplex multipath signals to onepath; and the gain equalization device is connected with the second division multiplexing device for gain flattening of the signals in the wavelength range. Compared with the prior art, different modegroup signals are correspondingly subjected to gain adjustment by the mixed multimode amplifier, the inter-mode gain is effectively reduced, the amplifying performance of the EDFAs is improved, thenthe signal gain is adjusted within the wavelength range through multimode fiber raman amplifiers (MFRAs), gain flattening is achieved, and the mixed multimode amplifier is convenient, fast and easy tooperate.

Description

technical field [0001] The invention relates to a hybrid multimode amplifier, in particular to an MM-EDFA based hybrid multimode amplifier and its realization. Background technique [0002] Erbium-Doped Fiber Amplifier (EDFA) uses pump light to amplify signal light, making long-distance, large-capacity, and high-speed optical fiber communication possible. It is a revolutionary breakthrough in the field of optical fiber communication technology. The Raman Fiber Amplifier (RFA) works by using the third-order nonlinear effect when the strong laser is transmitted in the fiber - the stimulated Raman scattering effect (SRS: Stimulated Raman Scattering), which overcomes the EDFA Limitations on working band and bandwidth. However, although the above optical fiber amplifiers have been widely used in single-mode optical fibers, the technology in multi-mode optical fibers is still immature. With the further increase of people's communication needs and the capacity of communication sy...

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 Patents(China)
IPC IPC(8): G02F1/39H01S3/067
CPCG02F1/39G02F1/395G02F1/392H01S3/06783
Inventor 周俊鹤刘钰锋
Owner TONGJI UNIV
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