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Method for realizing coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and system thereof

An optical network terminal and asymmetric technology, applied in the field of optical communication, can solve problems such as network economic waste, achieve the effect of simplifying design and ensuring minimum loss

Active Publication Date: 2009-10-28
CHENGDU SUPERXON COMM TECH CO LTD
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Problems solved by technology

[0015] From the perspective of technological development trends, 10GEPON will gradually replace GEPON and become the mainstream of the market within 5 to 10 years, but at present, GEPON networks have been laid in batches around the world, especially customer end equipment (CPE) has reached tens of millions of orders of magnitude. If you upgrade from GEPON to 10GEPON, the network cannot be backward compatible and will inevitably lead to huge economic waste

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  • Method for realizing coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and system thereof
  • Method for realizing coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and system thereof
  • Method for realizing coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and system thereof

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specific Embodiment approach

[0081] The downlink data of asymmetric 10GEPON and GEPON optical networks includes the following steps:

[0082] A. The 1G / 1G and 10G / 1G media access control (MAC) chip of the optical line terminal system host generates downlink data, and the 1490nm laser transmitter converts the 1.25Gbps downlink data generated by the media access control (MAC) chip into an optical signal. The 1590 or 1577nm laser transmitter converts the 10.3125Gbps downlink data generated by the medium access control (MAC) chip into an optical signal;

[0083] B. At the end of the optical line, a wavelength division multiplexing device (WDM MUX) and a wavelength division multiplexing device (WDM DMUX) are formed by combining filters. The wavelength division multiplexing device combines the downlink 1.25Gbps 1490nm optical signal with 10.3125G The 1590 or 1577nm optical signal is multiplexed in the same optical fiber for downlink transmission, and the 1.25Gbps 1310nm optical signal is sent to the receiving e...

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Abstract

The invention discloses a method for realizing the coexistence of unsymmetrical 10GEPON and GEPON optical network terminals and a system thereof. A wavelength division multiplexer is used for combining downlink waves with the wavelength of 1580nm to 1600nm (PRX10 and PRX20) or 1574 to 1580nm (PRX 30) of an OLT optical-electrical module in a 10GEPON and downlink waves with the wavelength of 1480nm to 1500nm of an OLT optical-electrical module in a GEPON into an optical fiber; and a wavelength-division demultiplexer is used for demultiplexing uplink waves with the wavelength of 1260 nm to 1360nm of the 10GEPON and the GEPON to a receiving end of the OLT optical-electrical module; and the OLT optical-electrical module in the 10GEPON and the OLT optical-electrical module in the GEPON multiplex one receiving device. The adoption of the technical proposal can lower the cost of network establishment, reduce inserting consumption of network connection and result in the easier realization of seamless smooth upgrade from GEPON to 10GEPON.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method and a system for realizing coexistence of asymmetric 10GEPON and GEPON optical network terminals. Background technique [0002] Passive Optical Network (PON) is a point-to-multipoint system. An Optical Line Terminal (OLT) is connected to multiple Optical Network Terminals (ONT) through a tree-shaped optical fiber link, which not only shares part of the optical fiber link resources, but also allocates At the same time, because the passive optical network does not require midway photoelectric relay or signal processing, it has the advantages of low network construction cost and simple maintenance. [0003] In terms of network technology, in the upstream direction of the passive optical network, the data transmission from each optical network terminal to the optical line terminal adopts the method of time division multiple access (TDMA), which is also the tran...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02H04L12/56
Inventor 曾雪飞余涛宋岩邹渊
Owner CHENGDU SUPERXON COMM TECH CO LTD
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