Title :
Higher-order modulation for client optics
Author :
Cole, Chris ; Lyubomirsky, Ilya ; Ghiasi, A. ; Telang, V.
Abstract :
Higher-order modulation is being studied for future 100G, 400G, and faster client optics. Amplitude, phase, and multi-subcarrier modulation approaches, used separately and in combination with each other, are being considered. Increased penalties due to higher-order modulation greater sensitivity to link impairments require use of DSP algorithms implemented in advanced CMOS nodes to close the link budget. DSP also enables programmability to reconfigure the optics for different applications and link conditions.
Keywords :
optical fibres; optical modulation; CMOS node; DSP algorithm; amplitude modulation; client optics; higher-order modulation; link impairment; multisubcarrier modulation; phase modulation; Bandwidth; Digital signal processing; Modulation; OFDM; Optical signal processing; Optical transmitters;
Journal_Title :
Communications Magazine, IEEE
DOI :
10.1109/MCOM.2013.6476865
