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Passive light network for wave duplexing and its realization

A technology of passive optical network and wavelength division multiplexing, which is applied in the field of passive optical network, can solve the problems of needing extra, and achieve the effects of saving fiber bandwidth, reducing cost, and avoiding mutual interference

Active Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem to be solved by the present invention is to provide a wavelength division multiplexing passive optical network and its implementation method to solve the defect that an additional laser light source is required to provide the ONU uplink signal carrier in the existing optical path loopback technology

Method used

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  • Passive light network for wave duplexing and its realization
  • Passive light network for wave duplexing and its realization
  • Passive light network for wave duplexing and its realization

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings for the best implementation of the present invention.

[0051] The invention is used to realize the signal transmission between the optical line terminal of the access network and the network unit. An embodiment of the wavelength division multiplexing passive optical network of the present invention is shown in Figure 4, comprising: an optical line terminal transmitting module 1 that can provide a shared light source on the optical line terminal side, and an optical network unit on the optical network unit side A receiving module 6 and a transmission fiber segment 7 . The optical network unit receiving module 6 uses the shared light source provided by the optical line terminal transmitting module 1 to transmit uplink signals and receive downlink signals at the same time. Among them, the one-way arrow indicates single-fiber one-way transmission, and the two-way arrow in...

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Abstract

The invention is concerned with the wavelength division multiplexing passive optic network, the optic line terminal includes at least one optic line terminal emission module, each optic network unit includes one optic network unit receiving module, the optic line terminal emission module corresponds with the optic network unit receiving module one by one; the optic line terminal emission module uses to divide a light into two beams, one is as the down signal carrier, the other is as the up signal carrier ringing from the optic network unit. The optic network unit receiving module receives the signal from the optic line terminal emission module, and uses the up signal carrier that provides by the optic line terminal emission module to send the up signal. The invention is also concerned with the implementation method of the wavelength division multiplexing passive optic network. The invention no longer needs to use other photosource generator to create the up signal carrier in ONU, saves the photosource generator in ONU, and the up optic signal and down optic signal use same light save length section, saves the fiber bandwidth.

Description

technical field [0001] The invention relates to passive optical network technology, in particular to a wavelength division multiplexing passive optical network and a realization method. Background technique [0002] The access network is a network device and facility that provides transmission carrying capacity between OLT (Optical Line Termination, Optical Line Terminal) and ONU (Optical Network Unit, User Network Unit), and is a bridge connecting the core network and the user or user premises network. The transmission signal from OLT to ONU is called downlink signal, and the transmission signal from ONU to OLT is called uplink signal. The access network is divided into a wired access network and a wireless access network. The wired access network mainly includes a copper wire access network, an HFC (Hybrid Fiber-Coax, hybrid fiber or coaxial cable) access network, and an optical fiber access network. Wait. [0003] At present, the equipment at both ends of the access net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02H04Q11/00
CPCH04J14/02H04J14/0298H04J14/0282H04J14/0252H04J14/0246H04J14/0226H04J14/025H04J2014/0253H04J14/0247H04J14/0224
Inventor 刘玥
Owner HUAWEI TECH CO LTD