Optical Audio vs HDMI ARC Audio

Main Differences between HDMI ARC and Optical Audio - HDMI ARC makes it easy to set up a TV and soundbar with a single cable. The often-overlooked ARC stands for "Audio Return Channel," and ever since the HDMI 1.4 standard was introduced, ARC has been available on TVs, soundbars and receivers.
Unlike other cabling standards, the optical audio system uses fiber optic cables and laser light to transmit digital audio signals between devices. The standard was introduced way back in 1983 by Toshiba,

[@michaelbeckerman7532]

TOSLINK devices don't use lasers to send the single down the plastic fiber optic cables used in home audio devices. They use LEDs. Lasers are used in commercial and telecom networking applications where glass-based fiber optic cables are used.

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Many Audio devices don't have HDMI since HDMI is for Video. So HDMI does not make optical obsolete in any way.

[@Landonio]

I'm looking for an HDMI splitter that can do minimum 1440p at 120fps, WITH optical. They don't seem to exist. Any ideas?

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Optical HDMI Cable.