For details on published work of the branch see “Research on VCSEL Interconnect and OE Processing Research at Army Research Laboratory”, Proceedings of the SPIE in The International Society for Optical Engineering, vol. 3946, pp. 172-86. See also “Multichannel Parallel Free-Space VCSEL Optoelectronic Interconnects for Digital Data Transmission and Processing”, Proceedings of the SPIE in The International Society for Optical Engineering, vol. 4046, pp. 130-9. Both papers explain some of the fascinating work done at ARL.