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A multiplexer/demultiplexer and passive optical network system

A passive optical network and demultiplexing technology, applied in the field of optical communication, can solve problems such as signal quality deterioration, and achieve the effect of improving the overall optical power budget

Active Publication Date: 2021-01-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention provides a multiplexer / demultiplexer and a passive optical network system. The device provided by the present invention solves the problem of increasing the optical power budget between the optical transmitter and the optical transceiver in the prior art. The problem of sharp deterioration in quality

Method used

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  • A multiplexer/demultiplexer and passive optical network system
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  • A multiplexer/demultiplexer and passive optical network system

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Embodiment 1

[0043]Such asFigure 4 As shown, the embodiment of the present invention provides a multiplexer / demultiplexer. The multiplexer / demultiplexer includes N optical multiplexing and demultiplexing modules. The optical multiplexing and demultiplexing modules convert signals of different wavelengths from multiple Multiple ports to the same port, or demultiplex signals containing different wavelengths from one port to different ports;

[0044]The N optical multiplexing and demultiplexing modules correspond to signals of different wavelengths; wherein, the negative dispersion and insertion loss of the M-th optical multiplexing and demultiplexing module in the optical multiplexing and demultiplexing modules are less than the M+1th one Optical multiplexing and demultiplexing module; N is a positive integer; M is a positive integer less than or equal to N.

[0045]Optionally, any optical multiplexing and demultiplexing module in this embodiment includes a narrowband filter and a reflector (such asFigu...

Embodiment 2

[0056]Such asFigure 8 As shown, based on the multiplexer / demultiplexer provided in the first embodiment, the embodiment of the present invention also provides a multi-wavelength system, which includes multiple receivers and the multiplexer in any implementation manner provided in the first embodiment. Use / demultiplexer;

[0057]The multiplexer / demultiplexer demultiplexes signals containing different wavelengths received from the common port to different ports;

[0058]The multiple receivers are respectively connected to different ports of the multiplexer / demultiplexer, and receive signals of different wavelengths output by the different ports of the multiplexer / demultiplexer.

[0059]In this embodiment, the multiplexer / demultiplexer mainly demultiplexes a composite signal containing multiple wavelengths. The specific implementation of the solution can be:

[0060]The multiplexer / demultiplexer demultiplexes the input composite signal containing multiple wavelengths, and then sequentially enters ...

Embodiment 3

[0063]Such asPicture 9 As shown, based on the multiplexer / demultiplexer provided in the first embodiment, the embodiment of the present invention also provides another multi-wavelength system, which includes a plurality of direct-modulated transmitters of different wavelengths and any one provided in the first embodiment. A multiplexer / demultiplexer in an implementation mode;

[0064]The plurality of directly modulated transmitters of different wavelengths respectively generate signals of different wavelengths, and the plurality of directly modulated transmitters of different wavelengths are connected to different ports of the multiplexer / demultiplexer;

[0065]The multiplexer / demultiplexer multiplexes signals of different wavelengths input from different ports to the same port.

[0066]In a specific optical network system, light multiplexing and demultiplexing are a pair of reversible processes. The process of multiplexing signals by the multiplexer / demultiplexer in this embodiment is the i...

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Abstract

A multiplexing / demultiplexing device and a passive optical network system, the multiplexing / demultiplexing device includes N optical multiplexing and demultiplexing modules, and the optical multiplexing and demultiplexing modules transmit signals of different wavelengths from multiple ports Multiplexing to the same port, or demultiplexing signals containing different wavelengths from one port to different ports; wherein the N optical multiplexing and demultiplexing modules correspond to signals of different wavelengths; and the optical multiplexing and demultiplexing The negative dispersion and insertion loss of the Mth optical multiplexing and demultiplexing module in the module are smaller than the M+1th optical multiplexing and demultiplexing module; N is a positive integer; M is a positive integer less than or equal to N. The multiplexer / demultiplexer and the passive optical network system provided by the solution of the present invention can solve the problem that the existing methods for improving the optical power budget between the optical transmitter and the optical transceiver all lead to sharp deterioration of signal quality due to dispersion.

Description

Technical field[0001]The present invention relates to the field of optical communication technology, in particular to a multiplexer / demultiplexer and a passive optical network system.Background technique[0002]Such asfigure 1 As shown, the existing Passive Optical Network (PON) system generally includes the following three parts: optical line terminal (Optical Line Termination, OLT), optical distribution network (Optical Distribution Network, ODN), and optical network unit (Optical Network Unit) Unit, ONU) or optical network user terminal (Optical Network Terminal, ONT). In the PON system, the transmission from the OLT to the ONU / ONT becomes the downstream, and vice versa. The downstream data is broadcasted to each ONU by the OLT because of the characteristics of light. The upstream data transmission of each ONU is allocated by the OLT to send time slots. The direction adopts time division multiplexing transmission. ODN is a passive optical splitting device that transmits the downstr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2513
CPCH04B10/2513H04J14/0202H04J14/0305H04B10/2507H04B10/27H04B10/504H04J14/02H04J14/08
Inventor 刘德坤李胜平
Owner HUAWEI TECH CO LTD
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