Wavelength division multiplexer test system and its test method

Abstract

The present invention discloses a wavelength division multiplexer testing system, including an adjustable light source providing light source for wavelength division multiplexer, a power instrument module for monitoring optical power of wavelength division multiplexer, an echo return loss module for testing echo return loss of wavelength division multiplexer, a polarization controller which can be connected with adjustable light source for controlling polarized state of output light of adjustable light source and a computer control device with control software, in which the adjustable light source, echo return loss module, power instrument module and polarization controller are connected with the computer control device by means of universal interface bus (GPIB cable).

Description

【Technical field】 [0001] The present invention relates to a wavelength division multiplexer test system and its test method for testing the optical performance of the wavelength division multiplexer, in particular to an automatic wavelength division multiplexer with high test rate, automatic data collection and flexible test procedures Multiplexer test system and test method thereof. 【Background technique】 [0002] The increase in public demand for broadband has promoted the development of wavelength division multiplexer technology. In a wavelength division multiplexer, multiple channel signals can be transmitted at high speed with low interference in an optical fiber. In order to ensure that the optical performance of the wavelength division multiplexer meets the required requirements, it is necessary to test the wavelength division multiplexer. [0003] Existing wavelength division multiplexer tests usually use manual testing, which is time-consuming and labor-intensive....

AI Technical Summary

Problems solved by technology

[0003] The existing wavelength division multiplexer test usually adopts manual test, which is time-consuming and laborious. The operator has to perform a series of operation steps, repeatedly adjust the setting of the optical wavelength, and at the same time need to manually read the display data of the power instrument. The test procedure usually uses The same optical path is used to test insertion loss, polarization-dependent loss and return loss. This method requires an additional optical coupler to couple part of the optical power to test return loss.

However, due to the polarization-dependent loss of the optical coupler itself, it will affect the measurement accuracy of the polarization-dependent loss of the wavelength division multiplexer

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