Unfortunately I am not familiar with CSCO's optical gear, I was under the impression that they did not play in that segment (pure optical) in the same way as INFN or Ciena do, so this came as a surprise.  That said, CSCO's routers do have optical interfaces but the boxes are far more expensive that simply buying a pure optical box. 

I would assume that CSCO offered a one stop shop solution which included all the gear, security, management software and service contract.