What fusion splicer alignment method uses a camera for fiber alignment?

The profile alignment system (PAS) is the correct choice as it utilizes a camera to align the fibers in a fusion splicer. This method is based on the precise imaging of the core of the optical fibers, allowing for accurate alignment by capturing the fiber’s shape and position. The camera assists in ensuring that the fibers are perfectly aligned before the fusion process occurs, which is crucial for ensuring low splice loss and maintaining signal integrity.

In contrast, passive alignment methods do not involve any active feedback or adjustment mechanisms, relying instead on gravity or other means for alignment, which can be less precise. Active alignment methods do involve some form of feedback or adjustment mechanism, but they typically do not prominently feature a camera for alignment purposes. Standard visual alignment methods involve the use of visual inspection by the technician without the aid of a camera, often leading to potentially less accurate alignment compared to a system that employs imaging technology. Overall, the profile alignment system offers a more sophisticated and highly accurate means of aligning fibers for fusion splicing.