Believe it or not the easiest way would be to install a new optical drive.
Getting the old fiber off, finding a suitable replacement, and adhesive will be a real chore.
You'd need a fusion material that will not shred or tear (leaves any cotton, cloth or foam out) as shredded bits would get sucked (carried into) the inside of the drive.
Insufficient thickness would allow for scratch to the bottom of your optical media.
Though this is the DIY repair/reduce/r
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