Title :
Pre-clipping method to reduce clipping-induced degradation in hybrid analog/digital subcarrier-multiplexed optical transmission systems
Author :
Kanazawa, A. ; Shibutani, M. ; Emura, K.
Author_Institution :
Opto-Electron. Res. Labs., NEC Corp., Kawasaki, Japan
Abstract :
The authors newly propose a pre-clipping method that can reduce the impairment due to LD clipping in hybrid analog/digital subcarrier-multiplexed optical transmission for future interactive CATV systems. It is experimentally confirmed that a CNR improvement of 1.3 dB is achieved with the proposed method.<>
Keywords :
cable television; digital signals; interactive video; optical fibre subscriber loops; optical modulation; semiconductor lasers; subcarrier multiplexing; CNR improvement; LD clipping; clipping-induced degradation; hybrid analog/digital subcarrier-multiplexed optical transmission systems; interactive CATV systems; pre-clipping method; Amplitude shift keying; Degradation; Fiber nonlinear optics; Frequency; Linearity; Nonlinear distortion; Nonlinear optics; Optical distortion; Optical filters; Optical modulation;
Journal_Title :
Photonics Technology Letters, IEEE
