Optical performance monitoring method and system for asynchronous delay sampling and image processing
An image processing and asynchronous technology, applied in transmission systems, electromagnetic wave transmission systems, electrical components, etc., can solve problems such as the inability to monitor multiple parameters of optical system performance at the same time, and achieve the effect of avoiding a large number of calculations and low sampling rate
Pending Publication Date: 2022-04-12
南京鼎芯光电科技有限公司
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More accurate monitoring results can be obtained by using pattern recognition and artificial neural network monitoring schemes, but the initial training requires a large amount of data sets and computing time. However, these optical performance monitoring technologies cannot simultaneously monitor multiple parameters that jointly determine the performance of the optical system
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or t...
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The invention relates to the technical field of optical performance monitoring, and discloses an optical performance monitoring method and system for asynchronous delay sampling and image processing, and the method comprises an asynchronous delay signal sampling step and a scatter image processing step. In the asynchronous delay signal sampling step, an input data signal is modulated, coupled, amplified, transmitted by an optical fiber, filtered, detected and delayed to obtain collected data; in the scatter image processing step, a two-dimensional scatter diagram is constructed according to the collected data, the two-dimensional scatter diagram is processed to obtain a scatter diagram contour, an optical signal-to-noise ratio value is obtained according to the ratio of the square of a contour average value to the variance of the contour average value, a linear function y = x is used for segmenting a scatter diagram diagonal line, and a dispersion value is obtained according to DR = d2 / d1; a two-dimensional scatter diagram of data to be detected is obtained through asynchronous delay sampling, the contour of the data scatter diagram is obtained through image processing, the average value of the contour is calculated, the contour edge is reduced to the average value, a recovered noise-free scatter diagram is obtained, and synchronous detection of dispersion and the optical signal-to-noise ratio can be achieved through the recovered scatter diagram.
Description
technical field [0001] The invention relates to the technical field of optical performance monitoring, in particular to an optical performance monitoring method and system for asynchronous delayed sampling and image processing. Background technique [0002] Optical performance monitoring technology can realize the estimation and acquisition of different physical parameters of transmission signals and various components of optical networks. Optical performance monitoring technology is indispensable to ensure the robust operation of optical networks and plays a key role in improving the flexibility and efficiency of the entire network. There are already many optical performance monitoring technologies to monitor the parameters of a single optical communication system, such as dispersion, Optical signal-to-noise ratio and polarization mode dispersion. Asynchronous delayed sampling-based techniques have been widely used in optical performance monitoring tasks. This technique sup...
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IPC IPC(8): H04B10/079
Inventor 赵健华平壤
Owner 南京鼎芯光电科技有限公司