Title :
Equalization technique to reduce clipping-induced nonlinear distortion in subcarrier-multiplexed lightwave systems
Author :
Ho, Keang-Po ; Kahn, Joseph M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
A pretransmission compression and postdetection decompression scheme is proposed to reduce the clipping-induced nonlinear distortion (NLD) in subcarrier-multiplexed lightwave systems. In an AM-VSB CATV system, compression using a two-segment, piecewise-linear transfer characteristic promises to yield a 3.2-dB gain in carrier-to-noise ratio (CNR), or a 110% increase in the number of transmitted channels.<>
Keywords :
amplitude modulation; cable television; optical links; optical modulation; subcarrier multiplexing; 3.2 dB; AM-VSB CATV system; carrier-to-noise ratio; clipping-induced nonlinear distortion; equalization technique; piecewise-linear transfer characteristic; postdetection decompression scheme; pretransmission compression; subcarrier-multiplexed lightwave systems; transmitted channel number; two-segment; Distributed Bragg reflectors; Electrons; Erbium-doped fiber lasers; Laser noise; Nonlinear distortion; Optical modulation; Optical transmitters; Piecewise linear techniques; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
