Physical-layer network coding in coherent optical OFDM systems
Xun Guan, Chun-Kit Chan · Optics Express · 2015
We present the first experimental demonstration and characterization of the application of optical physical-layer network coding in coherent optical OFDM systems. It combines two optical OFDM frames to share the same link so as to enhance system throughput, while individual OFDM frames can be recovered with digital signal processing at the destined node.