Right, you realize that higher transfer rates make a grand total of zero difference when feeding data to a monitor right? A dual link DVI can feed 60Hz monitors at 2560x1600, and HDMI 1.3 is rated for 2560x1600@75Hz with HDMI 2.0 offering support for 4k monitors at 60Hz.
https://en.wikipedia.org/wiki/HDMI#Version_comparison
The primary purpose of those optical cables it to get around the HDMI length restrictions so that you could run an HDMI cable from a media system in the basement up to a media room on the third floor across the house, they serve no purpose when connecting to a monitor 6 feet away because a display port cable will give you significantly better data transfer rates with less overhead on either end.
Also have you seen the prices on those cables? Rough estimate puts a zero foot cable still in excess of $100, stick with a normal $10 cable and stop buying into the monster cable FUD.