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
Awsome that you had a significant improvement! I suspect that some burn-in will help.  I don't think it will be as drastic as an analog cable.
Thanks Auxinput for your awesome suggestion.
i can’t believe the difference.
The cable removed distortion I had in a very, very loud Mahler symphony (#8) and significantly improved sound staging.
After reading the above blog, I can only assume my observations are delusional.
After all, how can the ear of a musician match the accuracy of scientific instruments?
I’ll return the cables immediately!