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Wave division multiplexing passive optical network

A technology of passive optical fiber network and wavelength division multiplexing, which is applied in the direction of wavelength division multiplexing system, etc., can solve the problems of high price and unsuitability for low-cost access network, etc., and achieves the advantages of convenient implementation, low light source cost and simple principle Effect

Inactive Publication Date: 2007-12-12
缪健
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  • Abstract
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AI Technical Summary

Problems solved by technology

Currently used optical modulators generally use III-V semiconductors or lithium niobate (LiNbO 3 ) material, expensive, suitable for long-distance high-speed optical communication, not suitable for low-cost access network applications

Method used

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  • Wave division multiplexing passive optical network
  • Wave division multiplexing passive optical network
  • Wave division multiplexing passive optical network

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Embodiment Construction

[0035] As shown in Figure 6 is a kind of wavelength division multiplexing passive optical network implementation scheme of the present invention, this scheme comprises central office equipment 100, receiving end 200 and the optical fiber feeder line 1 that connects central office and receiving end, described central office equipment 100 A high-power single-wavelength fiber laser array 110 consisting of N high-power single-wavelength fiber lasers, and a multi-stage passive optical power splitter 120, modulator array 130, and wavelength division multiplexer 140 matched with it; central office equipment 100 also includes a receiver array 150 and a wave division multiplexer 160 associated therewith. The receiving end 200 includes a remote node 210 and a user end device 220, the remote node 210 includes a wavelength division multiplexer 211 and a wavelength division multiplexer 212, and the user end device 220 includes a receiver 221 and a matching optical splitter 222 , a circulat...

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Abstract

A wavelength division multiplexing source-free network system includes the local device of optical fiber transmission, optical fiber feed line and receiving end, said local device includes high-power single wave long laser generator, source-free optical power distributor and optical modulator, the continuous laser output by said high-power laser device is divided into several paths by said source-free optical power distributor, one side every optical signal is modulated by optical modulator which is used to load said descending data packet containing descending data, on other hand it provides the continuous laser as optical source for the ascending signal for user, and every optical signal which loads descending data packet and the continuous laser are input in optical fiber feeding line via said WDM multiplexer. Said receiving end includes remote node and several terminal devices, and the remote node includes WDM multiplexer, which is used to decode the descending optical signal.

Description

technical field [0001] The invention relates to optical fiber communication, in particular to a wavelength division multiplexing passive optical network based on a high-power optical fiber laser. Background technique [0002] With the development of optical fiber communication, especially the technology of Wavelength Division Multiplexing (WDM:Wavelength Division Multiplexing), the bandwidth of the backbone network used for long-distance and metropolitan area communication has increased rapidly. The access network of the end user and the end user has been using the copper wire technology, but has not been upgraded along with the development of the backbone network. Whether it is the early 56k Modem, ISDN, or the current ADSL and VDSL technologies, users have always used telephone lines to access the Internet, resulting in bandwidth being limited below 10Mbps. The application of large broadband services such as video-on-demand and users' demand for access bandwidth continues...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02
CPCH04J14/02H04J14/0305
Inventor 缪健
Owner 缪健
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