Optical Extension Coupler

I needed a coupler for some toslink optical cables. Rather than wait a day or two and pay $5, I did a quick print. I found it easier to print two pieces and glue them together. Also found the alignment was lost when cables moved so I printed a simple tube which slides over the connection.

I didn't worry about exact geometry of connector. This works which is all I needed. Openscad files included if you need to resize (especially the surrounding tube since I expect the outside dimension of t