This article is 3 years old, but I found it good for information/review.
Infrared edge emitters and VCSELs are targeting a growing number of lucrative markets: Gaming, ultra-high density data storage, finger navigation and optical cables for USB and HDMI interconnects. Oclaro’s Robert Blum and Karlheinz Gulden discuss them all in detail.
http://www.compoundsemiconductor.net/article/90477-gaas-lasers-eye-multiple-targets.html