An automatic testing system and method for wave length selection switch

Abstract

The invention provides an automatic test system for wavelength-selective switch, which comprises a light source generating device, a tested WSS module and a spectrum recording device connected with each other through an optical physical channel and a system control device respectively connected with the three parts. The system control device controls the light source generating device to generatethe sequence signal with fixed wavelength needed for the test and controls various ports of the measured WSS module to form the fixed assignment relationship aiming at the wavelength sequence signal;the spectrum recording device records and returns the spectrum information output by various ports of the tested WSS model; and the system control device matches the returned spectrum information with the expected result to decide whether the assignment function of the tested WSS module is normal and position the tested WSS module and the ports of the tested WSS module with abnormal assignment function. The invention can realize the automation and batching of the test process, thus leading to the sharply reduced error rate and enhanced test efficiency.

Description

technical field [0001] The invention relates to an optical network dense wavelength division multiplexing (DWDM, Dense Wavelength Division Multiplexing) technology, in particular to the test of modules such as a reconfigurable optical add and drop multiplexer (ROADM, Reconfigurable Optical Add and Drop Multiplexer) in a DWDM system. Background technique [0002] With the development of DWDM technology, the requirement of flexibility and reconfigurability of optical network becomes more and more important. In this context, ROADM module has become a new technology that merchants are competing to apply. As the core device of this technical solution, the ROADM module is the most concerned by equipment manufacturers. This module generally has the function of flexible assignment, that is, assigning any input wavelength with any attenuation to any add or drop port. However, there is currently a lack of a device and method that can easily and perfectly test the function of the ROAD...

AI Technical Summary

Problems solved by technology

Because the ROADM module is powerful and supports multiple wavelengths, it is often unrealistic to perform a comprehensive coverage test on the module function by hand; even if the test is performed, human errors are very likely to occur

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