Active Alignment Is the Step That Limits Yield
A co-packaged optics module takes more than one hundred alignment operations before it is finished. Each one has to find the optimum across several degrees of freedom, hold that position while the joint is cured, then repeat on the next channel. Worked one channel at a time, the arithmetic puts a single module in the minutes, and minutes do not survive contact with a production line.
This paper looks at what a co-packaged optics module actually demands of the alignment step, and what it takes to bring every channel within roughly 0.2 dB of peak in under two seconds. It covers multichannel alignment across as many as twelve degrees of freedom, and the customizable objective functions that let one routine serve parts whose requirements differ.
