See this question for example.
Also, I used the
optical for optical communications, it seems like a vague tag but maybe that's fine for now.
Yes, and done.
In the future, you have enough reputation where you can suggest such synonyms yourself. If they don't get the attention, then bring it up here or in the chat, and we can take care of it. You would have gotten a badge if you had done so, but I went ahead and took care of it.