I'll bet there isn't any name for that. Many of the effects in AE are created from scratch, so they don't have names. Okay, maybe some designer calls his or her stuff "Willie", "Carl", "Mary", "Esmerelda", etc. Hey, it could happen.
But is that your REAL question, or do you want to know something else?
The real question is. Why did Tim add nearly every possible tag to his post?
You can do something like this with DE Chanel Offset or with a combination of Set Channels and offset. The basic technique is to separate the Red Green and Blue channels and offset or blur them. DE Chanel Offset will do it with one layer. To use other techniques (and there are dozens of combinations) requires more than one copy of your layer.