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Method and its device for monitoring multiway wave length light power and light frequency based on wave guide array grating

A technology of waveguide array grating and optical power, which is applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., and can solve the problems of small detectors and difficult implementation

Inactive Publication Date: 2005-02-02
GUANGXUN SCI & TECH WUHAN
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Problems solved by technology

In the actual AWG design, the two wavelengths of light with adjacent frequencies are imaged at the junction of the output waveguide 5 and the output slab waveguide 4 at a very small interval, generally only about 20 μm. The distribution of light intensity at the junction of the high-precision frequency and the light intensity of each wavelength requires that each detector in the detector array is small enough, so it is difficult to realize

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  • Method and its device for monitoring multiway wave length light power and light frequency based on wave guide array grating
  • Method and its device for monitoring multiway wave length light power and light frequency based on wave guide array grating
  • Method and its device for monitoring multiway wave length light power and light frequency based on wave guide array grating

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Embodiment Construction

[0087] figure 2 It is only a schematic diagram, and it is not necessarily used in the actual design figure 2 As shown in the circuit system of division first and then logarithm, as long as the division and logarithmic operation represented by formula (6) can be completed, in the embodiment, the logarithmic operation is first performed on each signal, and then the corresponding signal after the operation Circuits that perform differential summation, such as Figure 7 shown.

[0088] In the actual design, the division and logarithmic operation of the signal can also be completed by software. That is to say, the signals output by the amplifying circuits 8a and 8b are directly input into the computer, and the software program of the computer is used to carry out division and logarithmic operation. Of course, the processing speed is slower than that of the hardware (division and logarithmic operation circuit).

[0089] Combining the above designs, the figure 2 Indicates the ...

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Abstract

This invention discloses a method and its device for monitoring multipath wave length optical power and optical frequency based on waveguide array gratings realizing the aim of monitoring optical power and optical frequency at the same time by monitoring main diffraction grade m light intensity of AWG WDM and multipath wavelength optical power and monitoring two sub diffraction grades light intensity (m-1, m+1) of AWG WDM to monitor multipath wave length optica frequency. The device is composed of AWG WDM, trapezoidal coupler, light intensity detector, amplifier, divider, logometer and computer.

Description

technical field [0001] The invention relates to a waveguide array grating type wavelength division multiplexing / demultiplexing device, in particular to a method and device for monitoring multi-channel wavelength optical power and optical frequency. Background technique [0002] With the development of optical transmission research, wavelength division multiplexing technology has become an effective means to increase the capacity of communication information. The so-called "wavelength division multiplexing" refers to the combination of multiple different wavelengths of light into the same waveguide or optical fiber for transmission, and "demultiplexing" is a technology that separates different wavelengths of light in the same waveguide or optical fiber according to wavelength. In actual operation, it is often necessary to monitor each wavelength division multiplexed optical signal, and the monitored content mainly includes optical frequency and optical power. [0003] Usuall...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/077
Inventor 王文敏许远忠马卫东杨涛陈光
Owner GUANGXUN SCI & TECH WUHAN
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