Indexing gel for AT&T optical glass transport to dac link
I have a transport and dac that have the AT&T transmitter and reciever and glass fiber-optic coupling lead. Has anyone ever done some tests or A/B's using an indexing gel on both ends.
I would like to try but the cost of the glass fiber Indexing Gel is up there with voodoo lotion, $78us for .4oz of gel, yep you read that right point four of a ounce.
I wouldn't think index matching gel would be needed with ST style connectors. You might have better luck getting some from digikey or similar in terms of price.
Back when I did work in fiber optics the gel slightly reduced transmission losses, where it seemed to help most was in reducing reflections at the fiber/air/fiber interface. This was verified by optical TDR, but it was so long ago I don' remember the specifics..
I am not certain how much improvement you could expect. ST glass is already quite good in all respects particularly compared to toslink.
Hint: use a laser source.
Wouldn't that be nice.
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