Active optical cable channel detection control card and detection method

Abstract

The invention relates to an active optical cable channel detection control card and a detection method. A multipath analog switch opens a first channel of an active optical cable; an ADC samples a signal of the light receiving module and performs analog-to-digital conversion; a CPU performs operation on the sampling signal; a DAC performs digital-to-analog conversion on the signal value and then outputs the signal value; a multipath analog switch closes a first channel of the active optical cable and opens a second channel of the active optical cable, the test process of the first channel of the active optical cable is repeated until all channels of the active optical cable are tested, and the signal value of each tested channel is judged; and all channels of the active optical cable are opened, the test process is repeated, and the sum of signals of all channels is judged. By detecting the signal intensity of a single channel and the signal intensity of all the channels, the signal intensity of each channel and all the channels of the optical cable can be accurately and quickly detected, the detection accuracy and reliability are improved, and the quality of the optical cable canbe more accurately controlled.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to an active optical cable channel detection control card and a detection method. Background technique [0002] In the assembly process of common active optical cables, in order to improve the qualified rate, high-speed matching of optical fibers and optical modules is required. During the high-speed matching process, due to space limitations, multiple channels of the optical receiving module share a test point, and there is no way to check each one separately. The signal strength of the channel leads to the unsatisfactory pass rate of high-speed matched active optical cables in customer applications. Contents of the invention [0003] Aiming at the technical problems existing in the prior art, the present invention provides an active optical cable channel detection control card and a detection method. The control card is added in the high-speed matching process of the active ...

AI Technical Summary

Problems solved by technology

[0002] In the assembly process of common active optical cables, in order to improve the qualified rate, high-speed matching of optical fibers and optical modules is required. During the high-speed matching process, due to space limitations, multiple channels of the optical receiving module share a test point, and there is no way to check each one separately. The signal strength of the channel, which leads to the unsatisfactory pass rate of the active optical cable after high-speed matching in customer applications

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