OC-3 / STM-1 with Routerboard or conversor

I have 50 legacy licensed radios which use OC-3 or STM-1 Multimode 1310nm fiber, no Ethernet. I would like to use a RB2011 with an Alcatel or Cisco SFP, will it work? DOes RB speak SONET/SDH/ATM? Will it ever?

If not, is there a low cost conversion from OC-3 or STM-1 to Fast Ethernet (better make it Gig, but cheap)? I have seen RAD and others but they are too expensive, used CIsco or FOre runner is too old and hard to get working/relay on/buy from overseas, and a carrier grade MUX is way too expensive.

SDH is still there but dead in future. If you will calculate the cost of conversion you will see that it would be cheaper to buy new microwave transmission equipment…