Optical Power Debugging Method Based on Calculation

Abstract

The present invention provides a method for debugging the optical power of an optical module based on calculation, including the following steps: step S10, setting the initial value of the two-point bias DAC during open loop; step S20, first adopting open-loop debugging for the optical power, and setting Write the initial values ​​of the two bias DACs into the registers of the optical module, respectively obtain the corresponding optical power values ​​of the two points and the corresponding two bias current values; step S30, the optical power values ​​of the two points in S20 and the two The bias current value fits a straight line; step S40, substituting the optical power target value into the above-mentioned linear equation to obtain the required bias current value Bias Current; step S50, obtaining the bias DAC value BIAS_DAC corresponding to the optical power target value; step S60, write the above-mentioned BIAS_DAC into the register of the optical module, and read out the power monitoring value MPD_ADC of the output optical power; Step S70, obtain the bias DAC value APC_DAC required for the closed-loop optical power target value; the present invention can improve optical power commissioning s efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical communication, in particular to a calculation-based optical module optical power debugging method. Background technique [0002] In recent years, optical communication systems have developed rapidly in terms of transmission rate, transmission capacity, transmission distance, and cost. As a result, more stringent requirements have been placed on the production process of optical modules. On the premise of ensuring quality, the cost of optical modules should be reduced as much as possible. Production time. At present, when debugging the optical power of optical modules, the method usually used is the dichotomy method, also known as the half method, which is a search algorithm for finding specific elements in an ordered array. Due to differences in batches of optical components, the initialization value of optical power debugging is unreasonable, resulting in long debugging time, or exceeding the cur...

AI Technical Summary

Problems solved by technology

Due to differences in batches of optical components, the initialization value of optical power debugging is unreasonable, resulting in long debugging time, or exceeding the current tolerance range of the optical module transmitting circuit, causing the optical module to trigger the shutdown protection function, resulting in no light phenomenon, which seriously affects production efficiency

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