Are there differing qualities of optical cable?


I currently have my Gungnir Multibit DAC connected by optical cable to my Oppo player which I use as a transport. I also have a Cardas coax cable connected to a different input.  The optical sounds better. My question is, are there different qualities of optical cable you can use, or is one the same as the other?
128x128rvpiano
Blind faith in current scientific methodology leaves no room for discovery.

And Blind Faith Live in Hyde Park June 7, 1969 SBD London, England is definitely worth listening too :)


@rvpiano  Any reason why you didn't try the DH Labs Glass Master Toslink? Might have been an interesting comparison between house cables (vs. your DH Labs Silver Sonic coax cable).
I got the glass cable before I heard of DH Labs or I would have.
(Still can I guess.)
I'm using one for the digital audio out from my tv to my DAC. 

My previous one was from Monoprice and the DH Labs outperformed it.

I haven't done any comparisons between different brands or in your case: what I was hoping, i.e. the same brand but different digital cable types.