Modern passive optical networks (PON) rely on optical components that can split or combine light signals coming from high-power light sources. Replacing active components with passive components provides significant cost savings by eliminating the need to power and service active components in the transmission loop. However, to guarantee error-free operation, in every point-to-multipoint link inside a high performing PON only minimal optical alignment losses are permitted. This also applies to butterfly-packaged active optical devices that contain a light source, gratings, filters and µlenses. The challenge in both situations is to align the light source and the optics optimally as fast as possible.
PI’s Fast Multi-Channel Photonics Alignment (FMPA) systems enable fast, parallel alignment of several optical components. Automated area scans allow fast and reliable first light detection. Also, the intelligent gradient search algorithm can optimally align each of the components simultaneously. Additionally, during long process steps such as the curing of adhesives, our gradient search algorithm can actively correct the position, giving the devices an outstanding performance.