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

Wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units

An optical network unit and passive optical network technology, applied in the field of optical communication, can solve the problems of interactive communication efficiency and flexibility limitations, network scale and network reliability limitations, and the difficulty of implementing interactive communication.

Active Publication Date: 2019-05-03
STATE GRID CORP OF CHINA +2
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many direct communication schemes between ONUs, in these schemes, the network scale and network reliability are greatly limited, and the efficiency and flexibility of interactive communication between ONUs are limited.
Interactive communication between any ONUs is difficult or expensive to implement

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
  • Wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units
  • Wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units
  • Wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1, the WDM-PON system for interactive communication between the ONUs, the central office CO (1) connects n remote nodes RN (3) through the feeder fiber (2) to form a dual-fiber ring structure; each remote node RN (3) Connect m optical network units ONU (5) through distribution optical fiber (4).

[0032] see figure 2 , the central office CO (1) includes n × m optical transmitters (6) and n × m optical receivers (7), a pair of wavelength division multiplexers (8) and demultiplexers (9 ), an erbium-doped fiber amplifier EDFA (10), a first optical splitter (11), the first, second, and third optical couplers (12, 13, 14), the first, and the second 2 A coarse wavelength division multiplexer CWDM (15, 16), the first and the second two optical circulators (17, 18), the first and the second two optical isolators (19, 20), the first and the second 2. The third three optical switches (21, 22, 23).

[0033] In CO(1), n×m optical transmitters (6) are connected to a ...

Embodiment 2

[0039] see figure 1 , figure 2 , image 3 with Figure 4 The system shown, optical network unit ONU ij with ONU ik The specific implementation method of inter-interactive communication is: optical network unit ONU ij The first tuned transmitter (45) in (5) sends an optical signal in the blue wave band After passing through the sixth optical circulator (43), enter the fourth coarse wavelength division multiplexer (41), and pass through the ONU ij (5) with RN i (3) after the distributed optical fiber (4), the optical signal is transmitted to the RN i (3). in RN i (3), the optical signal It first passes through the arrayed waveguide grating AWG (40), passes through the fourth optical circulator (34), and then reaches the first tuned fiber Bragg grating (36). Since the Bragg wavelength of the first tuned fiber Bragg grating (36) is set to So light signal The 2-port reflection from the first tuned fiber Bragg grating (36) is output to the fourth optical coupler ...

Embodiment 3

[0041] see figure 1 , figure 2 , image 3 with Figure 4 The system shown, optical network unit ONU ij with ONU rs The specific implementation method of inter-interactive communication is: optical network unit ONU ij The second tuned transmitter (47) in (5) sends out an optical signal in the blue band After the seventh optical circulator (44), enter the fourth coarse wavelength division multiplexer (41), pass through the ONU ij (5) with RN i (3) after the distributed optical fiber (4), the optical signal is transmitted to the RN i (3). in RN i (3), the optical signal It first passes through the arrayed waveguide grating AWG (40), passes through the fourth optical circulator (34), and then reaches the first tuned fiber Bragg grating (36). Since the Bragg wavelength of the first tuned fiber Bragg grating (36) is not So light signal Output from port 3 of the first tuned fiber Bragg grating (36) to the seventh optical switch (27). at this time,

[0042] A. If...

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 wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units, which is characterized in thata central office CO is connected with n far-end nodes RN through feeder optical fibers to form a double-fiber-ring structure; Each far-end node RN is connected with m optical network units ONUs through distributed optical fibers; based on a Double-fiber-ring topology, optical fiber fault protection can be realized; the number of accessed users can be increased; The tunable FBG is arranged in the RN, interactive communication between any ONUs under the same RN can be achieved, interactive communication between any ONUs under different RNs can be achieved, and the interactive communication flexibility between the ONUs is greatly improved.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a wavelength division multiplexing passive optical network system capable of realizing interactive communication between optical network units. Background technique [0002] Network flattening is an inevitable trend in the development of telecommunication networks, which has long been a consensus in the industry. The advantages of network flattening are self-evident. It can not only reduce the cost of network construction, eliminate the bottleneck of network expansion, quickly expand business, improve network transmission efficiency, but also effectively reduce the impact rate of failures, shorten the time for troubleshooting, and reduce the difficulty of maintenance and maintenance. cost. In a word, network flattening can enable telecom operators to significantly reduce network construction and operation and maintenance costs, and improve network resource utilization. For ...

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): H04J14/02H04Q11/00
Inventor 郝洋董刚松申京宋腾邵奇吴晨光王正张毓琪陈雨洁甘朝钦
Owner STATE GRID CORP OF CHINA
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