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Method for improving wavelength resolution of optical performance monitor

A resolution and wavelength technology, applied in the field of improving the wavelength resolution of optical performance monitors based on gratings and array detectors, can solve problems such as cost consumption and device size increase

Inactive Publication Date: 2002-10-09
GUANGXUN SCI & TECH WUHAN
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AI Technical Summary

Problems solved by technology

At present, the minimum size of a single pixel is 25um. Usually, the method of increasing the total number of pixels is used to increase the wavelength resolution, which will lead to an increase in the size of the entire device and a huge cost of cost.

Method used

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  • Method for improving wavelength resolution of optical performance monitor
  • Method for improving wavelength resolution of optical performance monitor
  • Method for improving wavelength resolution of optical performance monitor

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Embodiment Construction

[0013] First, take the optical switch as an example to illustrate the specific implementation: it consists of a 1×N optical switch, whose N output ports are connected to the N input ports of the dispersion part; a dispersion part with N input ports, different The input port corresponds to different incident angles, that is, the spatial translation of different output spectra; the N input ports are sequentially selected through the optical switch, and the optical signals are input from different input ports in sequence. The spectrum of the spatial distribution of the signal is shifted for a certain distance sequentially on the detection plane, and the magnitude of the shift distance is related to the angle corresponding to the adjacent input ports. In this way, the same pixel can measure the values ​​of different wavelengths, and through the analysis and processing of the measurement data by the data processing part, the wavelength resolution is increased by N times compared wit...

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Abstract

A method for increasing the wavelength resolution of optical performance monitor based on raster and detector array includes inputting optical signals via input port, distributing the optical spectrum space of said optical signals on the plane of detector array byoptical splitter, and processing and analyzing the measured data by data processing unit. It is characterized by that the spectrum of optical signals distributed in space is parallelly moved on said detector plane by a certain distance to make a same pixel to measure different wavelength values. Said distance is a N-th of the line width of pixle.

Description

technical field [0001] The invention relates to a method for improving the wavelength resolution of an optical performance monitor, in particular to a method for improving the wavelength resolution of an optical performance monitor (OPM) based on a grating and an array detector. Background technique [0002] High-speed, large-capacity dense wavelength division multiplexing systems and all-optical networks have begun to be widely used. In order to ensure stable and reliable transmission of information, it is necessary to use an optical performance monitor to monitor the performance of optical signals in real time at the optical transmission layer (the performance of optical signals includes Three indicators: power, wavelength, optical signal-to-noise ratio). This application places high demands on the optical performance monitor: it must have spectral analysis capability comparable to that of a laboratory-used spectrum analyzer, and it must also have the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/18G01J3/28G02B6/34H04B10/07
Inventor 胡强高陈晓虎马琨肖清明
Owner GUANGXUN SCI & TECH WUHAN
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