Why are optical plugs polarized??

videobruce Silver Member Username: Videobruce Buffalo , NY Post Number: 109 Registered: Nov-04	Posted on Friday, February 16, 2007 - 23:27 GMT Since it shouldn't matter which side is up, why aren't optical cable connectors round or square since it doesn't matterwhich way they go in??
Berny Platinum Member Username: Project6 Post Number: 13008 Registered: Dec-03	Posted on Saturday, February 17, 2007 - 15:38 GMT Designers had to do something