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EPON expansion system

An all-in-one machine and signal connection technology, applied in the field of EPON expansion system, can solve the problems of heavy system burden and occupying extra optical power, and achieve the effect of reducing the number of OLTs, system burden and cost

Active Publication Date: 2018-06-15
宏安集团有限公司
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, OLT and ONU basically communicate with fixed optical power, and this fixed optical power is much greater than the minimum optical power that can work normally, so this communication method takes up a lot of extra optical power, the system burden is heavy, and it can no longer be carried out. expand

Method used

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Embodiment

[0025] refer to Figure 1 to Figure 5 As shown, the present invention discloses an EPON extension system, including an OLT optical transceiver and several ONU8, the OLT optical transceiver includes an OLT module 6, an optical transceiver module 7, an optical splitter 9, an optical amplifier 10, a wavelength division multiplexing 11, ONU power detection module 12 and OLT power adjustment module 13, the ONU8 includes an OLT power detection module 80 and an ONU power adjustment module 81.

[0026] The above-mentioned OLT module 6 is set at the fiber optic trunk terminal. The OLT module 6 can broadcast Ethernet data for the ONU8 and allocate bandwidth for the ONU8, that is, control the start time and the size of the sending window for the ONU8 to send data.

[0027] The optical splitter 9 is connected to the OLT module 6 for signals, and it includes an anisotropic transparent crystal, which is used to separate the downstream optical signals of the 1490nm segment and the 1550nm se...

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Abstract

The invention discloses an EPON expansion system, and the EPON expansion system comprises an OLT optical transceiver located at an optical fiber trunk terminal, and ONUs which are in signal connectionwith the OLT optical transceiver and located at a user side; the OLT optical transceiver comprises an OLT module, an optical transmitting and receiving module for gathering and distributing optical signals and ONU power detection modules for detecting ONU uplink optical power under different addresses, wherein the OLT module, the optical transmitting and receiving module and the ONU power detection modules are orderly in signal connections, and the OLT module is in signal connection with an OLT power adjusting module; the ONU comprises an OLT power detection module for detecting and receivingdownlink optical power, and an ONU power adjusting module, wherein the OLT power detection module is in signal connection with the OLT power adjusting module, and the ONU power detection module is insignal connection with the ONU power adjusting module. The EPON expansion system provided by the invention can adjust optical power generated when an OLT communicates with the ONUs, in real time, thus, system load is reduced, and system expandability is improved.

Description

technical field [0001] The invention relates to a PON network, in particular to an EPON extension system. Background technique [0002] EPON (Ethernet-based Passive Optical Network) is a kind of PON network. With the development of telecommunication technology, it is an integrated access technology widely used to meet the needs of high-speed broadband services such as video and data. EPON network consists of three parts: OLT, ODN and ONU. The main features are point-to-multipoint, passive line, simple and clear network hierarchy, and can provide comprehensive access to multiple services such as voice, broadband, and CATV. At present, OLT and ONU basically communicate with fixed optical power, and this fixed optical power is much greater than the minimum optical power that can work normally, so this communication method takes up a lot of extra optical power, the system burden is heavy, and it can no longer be carried out. expand. Contents of the invention [0003] The te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0067H04Q2011/0086
Inventor 陈卫东张桂林张洪雷刘蒙范雨侬丛晓红王英力崔孝富于文双杨成福
Owner 宏安集团有限公司