Does it make sense to put optics in both the front and backplane of a large data-center?

Aniruddha Kushwaha, Tamal Das, Ashwin Gumaste. Does it make sense to put optics in both the front and backplane of a large data-center?. In Optical Fiber Communications Conference and Exhibition, OFC 2017, Los Angeles, CA, USA, March 19-23, 2017. pages 1-3, IEEE, 2017. [doi]

@inproceedings{KushwahaDG17,
  title = {Does it make sense to put optics in both the front and backplane of a large data-center?},
  author = {Aniruddha Kushwaha and Tamal Das and Ashwin Gumaste},
  year = {2017},
  url = {http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=7936887},
  researchr = {https://researchr.org/publication/KushwahaDG17},
  cites = {0},
  citedby = {0},
  pages = {1-3},
  booktitle = {Optical Fiber Communications Conference and Exhibition, OFC 2017, Los Angeles, CA, USA, March 19-23, 2017},
  publisher = {IEEE},
  isbn = {978-1-9435-8023-1},
}