Optical fiber system and method based on wavelength division multiplexing light-free relay

A technology of wavelength division multiplexing and optical fiber system, applied in the direction of wavelength division multiplexing system, optical multiplexing system, optical fiber transmission, etc. The effect of horizontal dependence, solving the limitation of transmission span and improving the efficiency of use

Active Publication Date: 2016-07-20
FENGHUO COMM SCI & TECH CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defects existing in the prior art, the object of the present invention is to provide a fiber optic system and method based on wavelength division multiplexing without optical relay. In the case of no optical relay equipment, the method using optical path asymmetry, Solv

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
  • Optical fiber system and method based on wavelength division multiplexing light-free relay
  • Optical fiber system and method based on wavelength division multiplexing light-free relay
  • Optical fiber system and method based on wavelength division multiplexing light-free relay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 As shown, in the present embodiment, the optical fiber system based on wavelength division multiplexing without optical relay adopts the ring network application mode of an asymmetric ring with the extension function. The optical fiber system includes an access central office and multiple network nodes, and the access central office includes two multiplexers and demultiplexers, an optical switch, a plurality of optical add-drop multiplexers and an access center device; each network The node includes a sub-band multiplexer and demultiplexer, two optical add-drop multiplexers, and an access device connected to each optical add-drop multiplexer. The network node can be set in the optical switch box. When it is far away from the access equipment, it can be connected by the remote function, which can be extended by 100m to 5km; direct connection. In this embodiment, the transmission distance of the ring network link can reach 25km.

[0027] Among them, the w...

Embodiment 2

[0050] like image 3 As shown, based on the optical fiber system with wavelength division multiplexing without optical relay, this embodiment adopts a chain-type cascading method of multiple network nodes, including the access central office and multiple network nodes, and the access central office includes a combination Waveformer, an optical add-drop multiplexer and an access center device, each network node includes a sub-band multiplexer, two optical add-drop multiplexers and the interface connected to each optical add-drop multiplexer into the device. Among them, the multiplexer / demultiplexer connected to the central office is used to complete the multiplexer and demultiplexer functions of multiple service colored light wavelengths. The optical add-drop multiplexer is used to complete the upwave and downwave of multiple channels of single-service color light, and send the upwave and downwave to the corresponding access center equipment or access equipment. The sub-band ...

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 discloses an optical fiber system and method based on a wavelength division multiplexing light-free relay and relates to the technical field of wavelength division multiplexing.The system comprises an access central office and a plurality of network nodes.The access central office comprises two wave combining and separating devices, an optical switch, a plurality of optical add-drop multiplexers and an access central device.Each network node comprises a sub-band wave combining and separating device, two optical add-drop multiplexers and an access device.The wave combining and separating devices are used for achieving the wave combining and separating function of multiple pieces of service colorful light.The optical add-drop multiplexers are used for achieving upper waves and lower waves of multiple paths of single-path colorful light, and the upper waves and the lower waves are conveyed into the corresponding access central device or access devices.The sub-band wave combining and separating devices are used for wave combining and separating of narrowband service colorful light of the network nodes.The optical switch is used for finishing receiving and sending of service colorful light signals on circuits.Under the condition of the light-free relay, an optical path asymmetric method is adopted, the problem of transmission span of various access layers based on the wavelength division multiplexing technology is solved, and implementation cost is reduced.

Description

technical field [0001] The present invention relates to the technical field of wavelength division multiplexing, in particular to a fiber system and method based on wavelength division multiplexing without optical relay. Background technique [0002] In the communication network, with the advent of the LTE (Long Term Evolution), 4G and 5G era, the edge and flattening of the metropolitan area are becoming more and more obvious, and the capacity demand of various access layers has exploded; wireless C-RAN Broadband access networks such as fronthaul networks, mobile backhaul networks, and visual video have dramatically accelerated the consumption of optical fiber cores at various access levels. How to effectively solve the expansion and improvement of the current access layer optical fiber core consumption, and minimize the occupation of tube hole resources, is of urgent practical significance at present; the introduction of wavelength division multiplexing and single-fiber bid...

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
IPC IPC(8): H04B10/25H04J14/02
CPCH04B10/2589H04J14/0201
Inventor 张国胜栾艳彩袁振涛蒋小庆梅亮
Owner FENGHUO COMM SCI & TECH CO LTD
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