Dense wave division multiplex passive optical network system for self-implant locked Fabry-Perot laser diode

A dense wavelength division multiplexing, passive optical network technology, applied in wavelength division multiplexing systems, electromagnetic wave transmission systems, transmission systems, etc., can solve the problems of expensive distributed feedback laser diode light sources

Inactive Publication Date: 2004-05-19
崔埈国
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  • Abstract
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Problems solved by technology

However, the disadvantage of this method is that it is expensive to use distributed feedback laser diodes as the light source in the central office

Method used

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  • Dense wave division multiplex passive optical network system for self-implant locked Fabry-Perot laser diode
  • Dense wave division multiplex passive optical network system for self-implant locked Fabry-Perot laser diode
  • Dense wave division multiplex passive optical network system for self-implant locked Fabry-Perot laser diode

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Embodiment Construction

[0023] Now, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0024] figure 2 It is a schematic diagram illustrating the structure of a DWDM-PON system according to an embodiment of the present invention. Such as figure 2 As shown, the DWDM-PON system includes a central office (CO) 100, remote nodes (RN) 200, and a number of optical network units (ONUs) 300.

[0025] The central office 100 produces different wavelengths λ 1 , lambda 2 ,...λ N and send the first optical signal to the remote node 200. The central office 100 also receives signals from remote nodes 200 with different wavelengths λ N+1 , lambda N+2 ,...λ 2N of the second optical signal. In order to accomplish this function, the central office 100 includes a plurality of first transmitters 110, which are respectively used to output the first optical signal λ 1 , lambda 2 ,...λ N ; A plurality of first receivers 120, respectively ...

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Abstract

Disclosed is a dense wavelength division multiplexing-passive optical network (DWDM-PON) system utilizing self-injection locking of Fabry-Perot laser diodes, in which output optical signals of different wavelengths are partially fed back by a partial mirror, so as to injection-lock the Fabry-Perot laser diodes, respectively. In accordance with this system, inexpensive Fabry-Perot laser diodes can be used as respective light sources of a central office and optical network units (ONUs). Accordingly, it is possible to minimize the system construction costs, as compared to conventional optical networks.

Description

technical field [0001] This application relates to a dense wavelength division multiplexing (WDM)-passive optical network system, especially a dense WDM-passive optical network system using Fabry-Perot laser diode self-injection locking, the optical signals of different wavelengths output by the local The mirrors are partially fed back and then injection-locked to the Fabry-Perot laser diodes respectively. Background technique [0002] Recently, the demand for a network system based on an optical network has increased dramatically. This optical network-based network system can provide broadband multimedia services and high-speed and large-capacity Internet services. There is increasing interest in optical networks that use optical fibers to connect directly to optical network units (ONUs) in order to provide broadband services to users. [0003] One of the most economical optical networks in use these days is the Passive Optical Network (PON). The central office (CO) of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/24H04B10/2581H04J14/02
CPCH04B10/2503H04J14/02H04B10/2589H04B10/2581
Inventor 宋在元李宗训
Owner 崔埈国
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