Space-division multiplexing (SDM) technology for short-reach fiber optic systems. - Douglas L. Butler (OFC, 2016)

Fiber-to-Waveguide Connector for Co-Packaged Optics. - Lars Brusberg; Michael DeJong; Margaret Allen; Ramsey Selim; Douglas L. Butler; Jeffrey S. Clark; Clifford G. Sutton; Grahame Wood; Henk Bulthuis; Drew Lundsten; Jamie Stokes (ECOC, 2017)