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.
© 2014 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: November 25, 2013
Revised Manuscript: January 16, 2014
Manuscript Accepted: February 12, 2014
Published: March 20, 2014
Grzegorz Stepniak, "Dispersion-supported direct-detection mode group division multiplexing using commercial multimode fiber couplers," Opt. Lett. 39, 1815-1818 (2014)