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A passive optical network

A technology of passive optical network and optical network unit, which is applied to the selection device, electrical components, selection device, etc. of the multiplexing system, to achieve the effects of small splitting loss, improved uplink access bandwidth, and increased number of wavelengths

Active Publication Date: 2014-10-22
HISENSE BROADBAND MULTIMEDIA TECH
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the above-mentioned shortcomings and deficiencies existing in the existing passive optical network using a single downlink wavelength optical signal and the downlink broadcast mode of the optical signal, and provides a passive optical network, which effectively improves the access of the end user of the optical network unit bandwidth

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  • A passive optical network
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Embodiment Construction

[0019] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The present invention starts from the layout structure of the existing passive optical network, and considers that the existing passive optical network generally adopts an OLT with multiple ONUs through a spectrometer, and adopts a downstream optical signal of one wavelength and an upstream optical signal of one wavelength for signal processing. The transmission structure has shortcomings such as small ONU access bandwidth, large optical loss, and inconvenient expansion of the number of ONUs. A new passive optical network is proposed, which can effectively solve the problems of the existing passive optical network.

[0021] figure 2 and image 3 Schematic structural diagrams of two embodiments of the passive optical network of the present invention are respectively shown.

[0022] first reference ...

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Abstract

The invention discloses a passive optical network, which comprises an optical line terminal, an optical cable and an optical network unit, wherein the optical line terminal comprises n transmitting light assembly units and m receiving light assembly units, and n and m are natural numbers of more than 1; and one end of the optical cable is connected with the optical line terminal, the other end of the optical cable is connected with an arrayed waveguide grating, and the arrayed waveguide grating is connected with the optical network unit. The passive optical network can realize point-to-point transmission of downlink optical signals so as to improve downlink access bandwidth of a terminal user.

Description

technical field [0001] The invention relates to a passive optical network, in particular to a passive optical network which improves user access bandwidth, and belongs to the technical field of optical communication. Background technique [0002] At present, in the field of optical communication technology, commonly used passive optical networks include EPON (Ethernet Passive Optical Network) and GPON (Gigabit Passive Optical Network) whose transmission rates can reach 1Gbps and 2.5Gbps. 10G EPON (10 Gigabit Ethernet Passive Optical Network) and XGPON (10 Gigabit Passive Optical Network) with a transmission rate of 10Gbps have also entered the deployment of some experimental bureaus, and have achieved success. users) field deployment and use. [0003] The downlink mode of the above-mentioned passive optical network all adopts the broadcast mode, and distributes the broadcast information to several user terminals through a spectrometer. Taking XGPON as an example, its netwo...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J14/02
Inventor 张强赵其圣薄生伟杨思更薛登山
Owner HISENSE BROADBAND MULTIMEDIA TECH