WDM passive optical network system capable of supporting quadruple service conveying function

A passive optical network and wavelength division multiplexing technology, applied in the system field of optical fiber communication technology, can solve the problem of inability to transmit radio frequency signals at the same time, and achieve the effect of ensuring service quality, avoiding conflicts, and reducing overall costs

Inactive Publication Date: 2009-01-21
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantages are: 1. This solution cannot transmit radio frequency signals for wireless access at the same time; 2. All optical network units share the bandwidth of the same optical channel

Method used

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  • WDM passive optical network system capable of supporting quadruple service conveying function
  • WDM passive optical network system capable of supporting quadruple service conveying function
  • WDM passive optical network system capable of supporting quadruple service conveying function

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Embodiment Construction

[0020] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0021] As shown in Figure 1, the wavelength division multiplexing passive optical network system supporting the quadruple service transmission function of this embodiment includes: an optical line terminal, a feeder fiber, a remote node and an optical network unit, and the remote node includes the first, The second array waveguide grating, the optical line terminal includes a triple service transmitter, a wavelength interleaver, a broadcast video transmitter, an uplink data receiver, a 2×1 combiner and an erbium-doped fiber amplifier, wherein: the output port of the tr...

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Abstract

The invention relates to a wavelength division multiplexing passive optical network system which supports quadruple service transmission function and belongs to the field of optical communication technology; wherein, after being transmitted through a first feeder fiber, optical signals output from an optical line terminal are sent to a multiplexing interface of a first arrayed waveguide grating in a node of a distal end; the de-multiplexing interface of the first arrayed waveguide grating is connected with an input interface of an optical network unit with corresponding wavelength channels; optical signals output from the output terminal of the optical network unit are sent into a de-multiplexing interface of a second arrayed waveguide grating with corresponding wavelength channels in the node of the distal end, are output by the multiplexing interface of the second arrayed waveguide grating and are transmitted into the optical line terminal through a second feeder fiber. The network system can realize the integration of quadruple services of wireless access, voice, video and data to the same wavelength division multiplexing passive optical network and can effectively reduce the allocation cost, optimize the system structure as well as provide diversified services for users.

Description

technical field [0001] The invention relates to a system in the technical field of optical fiber communication, in particular to a wavelength division multiplexing passive optical network system supporting quadruple service transmission function. Background technique [0002] Quadruple service business refers to using the optical network to provide users with four services of voice, video, data and wireless access at the same time. With the rapid development of wireless communication technology, users increasingly hope to enjoy convenient and fast wireless access services anytime and anywhere. However, due to the limited coverage of wireless signals, more wireless base stations need to be set up, and the cost is high. Integrating wireless access and voice, video, and data services into the same access network can effectively reduce configuration costs, optimize system structure, and provide interactive services (uplink data access services), or other various Derived termin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/155H04B10/158H04B10/25
Inventor 田玥苏翼凯
Owner SHANGHAI JIAO TONG UNIV
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