Several third-party cables are mentioned
here, slide 7. I’ve seen Corning‘s optical cables
on eBay. And
here’s a Kanex.
One thing:
It never should need to be an easter egg hunt for one to locate a correct cable — or, to shuffle through the merchandising of cables claiming to be one protocol but are actually another cable entirely —
especially one with such a high initial price point. (USD$200 for a used Corning optical TB1/2 cable? In
this economy?) Moreover, lest one had that slideshow at the ready (and even then, the slideshow was a presentation, not a table list of part numbers), then it wouldn’t be self-evident which vendors, Apple notwithstanding, shipped TB1/2 cables.
But it is. That’s why it’s not a “fix”,
per se, how the only practical place to buy a
possible, new TB1/2 cable now is on a web store rife with counterfeit, bait-and-switch, and/or substandard products. [Also, this is part of why I opened a thread for us to share those Aliexpress finds which
do turn out to be the real deal
and a bona fide good deal. I don’t expect any actual TB1/2 cable which does get sold there will find its way onto that thread, but it’d be delightful to discover otherwise.]