title: Dispersion-supported direct-detection mode group division multiplexing using commercial multimode fiber couplers.
abstract: In this Letter, an intensity-modulation direct-detection mode group multiplexing system is investigated. The system does not use highly modally selective optics: multiplexing and demultiplexing is done in commercial multimode couplers and modal diversity is enhanced by modulation rates far beyond the length-bandwidth product of the fiber. Experimental and theoretical results shown for OM1 and OM2 fibers fully confirm this theory.
authors.forename: Grzegorz
authors.initials: G
authors.lastname: Stepniak