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Multiplex/demultiplex method and apparatus for wavelength-division multiplex system

A wavelength division multiplexing and multiplexing device technology, applied in the field of optical signal transmission, can solve the problems of high cost and low wavelength utilization rate, and achieve the effect of reducing device cost and improving wavelength utilization rate

Active Publication Date: 2010-04-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a multiplexing / demultiplexing method and device of a wavelength division multiplexing system with low cost and high wavelength utilization rate, to realize optical wavelength multiplexing / demultiplexing, to overcome the high cost in the prior art , The defect of low wavelength utilization

Method used

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  • Multiplex/demultiplex method and apparatus for wavelength-division multiplex system
  • Multiplex/demultiplex method and apparatus for wavelength-division multiplex system
  • Multiplex/demultiplex method and apparatus for wavelength-division multiplex system

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Embodiment 1

[0030] according to Figure 4 and Figure 8 , the present invention includes a passband demultiplexing unit 21 and a plurality of first channel demultiplexing units 22, the input of each first channel demultiplexing unit 22 is connected to the corresponding output of the passband demultiplexing unit 21; also Including a second channel demultiplexing unit 23, the second channel demultiplexing unit 23 has a plurality of output terminals, wherein one output terminal is connected to the input terminal of the passband demultiplexing unit 21, and the other output terminals output a single For wavelength signals, the passband demultiplexing unit 21 is a passband demultiplexer, and the first channel demultiplexing unit 22 and the second channel demultiplexing unit 23 are channel demultiplexers.

[0031] like Figure 4 As shown, the second channel demultiplexing unit 23 demultiplexes the input signal into a plurality of single-wavelength signals and a multi-wavelength signal, and the...

Embodiment 2

[0056] according to Image 6 and Figure 9 , the present invention includes a passband multiplexing unit 11 and a plurality of first channel multiplexing units 12, the output of each first channel multiplexing unit 12 is connected to the corresponding input of the passband multiplexing unit 11; also includes a second channel Multiplexing unit 13, the second channel multiplexing unit 13 has a plurality of input terminals, wherein one input terminal is connected with the output end of the described passband multiplexing unit 11, and other input terminals input single-wavelength signal, the passband multiplexing unit 11 It is a passband multiplexer, and the first channel multiplexing unit 12 and the second channel multiplexing unit 13 are channel multiplexers.

[0057] like Image 6 As shown, the single-wavelength signals in the input signal are multiplexed into n sub-bands (band 1, band 2...band n) through the corresponding first channel multiplexing unit 12 in groups, and the...

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Abstract

The invention discloses a wavelength-division multiplex system multiplying / sloving multiplying method and device of light signal transmission, which is characterized by the following: the multiplyingdevice comprises the pass band multiplexing unit and a plurality of channel multiplexing units; the output end of every the first channel multiplexing unit connects input end of pass band multiplexingunit; the second channel multiplexing unit has several inputs; one input connects output of pass band multiplexing unit;other inputs input single wavelengh signal; the sloving multiplying device cons ists of band pass multiplexing unit and several the first channel sloving multiplying unit; input of every first sloving multiplying unit connects output of sloving multiplying unit; the second channel sloving multiplying unit has several outputs; one output connects input; other outputs output single wavelengh signal.

Description

technical field [0001] The invention relates to optical signal transmission, in particular to a multiplexing / demultiplexing method and device for a wavelength division multiplexing system. Background technique [0002] With the rapid development of data communication, modern communication systems have higher and higher requirements for communication capacity. Optical wavelength division multiplexing technology, as a multiplexing method to improve communication capacity in optical fiber communication, is more and more widely used. The emergence of erbium-doped fiber amplifiers has led to the rapid development of wavelength division multiplexing technology, but the available gain bandwidth of fiber amplifiers is limited. In the case of the available bandwidth of the existing optical fiber amplifier, in order to meet the growth of communication capacity, it can be achieved by increasing the rate of a single wavelength, or by reducing the wavelength interval to achieve more mul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02
Inventor 陈娟
Owner HUAWEI TECH CO LTD
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