rvpianoYes the polished optical glass cable is the best (can’t bend it too much), Wadia had these as an ST type connection with an AT&T reciever (not Toslink), with a small smear of what called "optical indexing fluid" on the ends and then plugged in. The fluid was very expensive and optically clear, it gave a far better coupling between the end of the glass fibre and the receiver lens. Would work with Toslink as well I would think.
My question is, are there different qualities of optical cable you can use, or is one the same as the other?
https://www.newport.com/f/index-matching-fluid
https://www.ebay.com.au/sch/i.html?_odkw=ST+optical&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.XST+optical+cable.TRS0&_nkw=ST+optical+cable&_sacat=0
Cheers George