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Passive optical network system, optical line terminal and optical transmission method

A technology of passive optical network and optical distribution network, applied in wavelength division multiplexing system, electromagnetic network arrangement, star electromagnetic network, etc., can solve the problem of low efficiency of PON port and achieve the effect of improving efficiency

Active Publication Date: 2018-03-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a passive optical network system, an optical line terminal, and an optical transmission method using a passive optical network system to solve the problem of low efficiency of the existing PON ports of two different PONs sharing one ODN question

Method used

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  • Passive optical network system, optical line terminal and optical transmission method
  • Passive optical network system, optical line terminal and optical transmission method
  • Passive optical network system, optical line terminal and optical transmission method

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Embodiment 1

[0065] like figure 2 As shown, it is a schematic structural diagram of a passive optical network embodiment of the present invention. In this embodiment, there are only two OLTs, and these two OLTs use the OLT provided in the embodiment of the present invention. Compared with the existing system, the system The first WDM, uplink optical processing module and downlink optical processing module are added; the uplink optical processing module includes a second WDM and a mode coupler; the downlink optical processing module includes a 2x4 optical splitter and an optical amplifier of the S-band and an optical amplifier of the L-band Amplifiers, where:

[0066] The main function of the first WDM is to split and synthesize uplink and downlink light, such as guiding the uplink light to the mode coupler and guiding the downlink light to the backbone fiber of the PON. According to the existing thin-film filter (TFF) technology, a sideband filter can be used to complete this function, s...

Embodiment 2

[0079] If for the coexistence of EPON and 10G-EPON network, it can be reused figure 2 network, just change GPON to EPON, and XG-PON to 10G-EPON, other changes are not required.

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Abstract

A Passive Optical Network (PON) system, an Optical Line Terminal (OLT) and an optical transmission method applying the PON system. Said PON system includes multiple Passive Distribution Networks (ODNs), multiple ONUs connected with each ODN, first WDMs which are in one-to-one correspondence connection with multiple ODNs, an uplink and a downlink optical processing modules both connected with each first WDM and multiple OLTs of multiple different PONs all respectively connected with the uplink and the downlink optical processing modules; the uplink optical processing module is configured as: first coupling uplink light from multiple first WDMs, then splitting it and outputting it to multiple OLTs; multiple OLTs are configured as: receiving uplink light inputted by the uplink optical processing module and sending downlink light to the downlink optical processing module; the downlink optical processing module is configured as: amplifying, and then combining the downlink light sent by multiple OLTs, splitting the combined downlink light into multiple channels, and respectively outputting to multiple first WDMs. The technical solution of the present invention improves the efficiency of ports of the PON.

Description

technical field [0001] The invention relates to the field of optical access technology, in particular to a passive optical network system, an optical line terminal and an optical transmission method using the passive optical network system. Background technique [0002] With the rapid development of optical fiber communication technology and the requirements of low cost and green environmental protection, it has become a basic consensus that all communication networks use optical fibers to form a network from the core network, the metropolitan area network to the access network. [0003] For some scattered communities, each passive optical network only connects a few users. For densely populated communities, since the number of users carried by each passive optical network (PON) port is relatively limited, the office needs to Many, many PON ports can meet its needs. [0004] However, the office’s computer room has limited space, and the number of PON ports cannot be too man...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04B10/40H04J14/02
CPCH04B10/272H04Q11/0067H04Q2011/009
Inventor 付志明徐继东
Owner ZTE CORP