Title :
20 Gbit/s no-chirp intensity modulation by DPSH-IM method and its fibre transmission through 330 ps/nm dispersion
Author :
Shirasaki, M. ; Yokota, I. ; Touge, Tetsuo
Author_Institution :
Optoelectron. Syst. Lab., Fujitsu Labs. Ltd., Kawasaki, Japan
Abstract :
20 Gbit/s intensity modulation has been achieved by the authors´ original method of DPSH-IM (direct phase shift and self-homodyne intensity modulation). The drive voltage was only 1.6 V when matched with 50 Omega . The pseudorandomly modulated lightwave showed a high extinction ratio and a narrow spectrum width without wavelength chirping. Chromatic dispersion of 330 ps/nm caused little waveform degradation.
Keywords :
digital communication systems; optical dispersion; optical fibres; optical links; optical modulation; 1.55 micron; 1.6 V; 20 Gbit/s; DPSH-IM method; chirp-free modulation scheme; chromatic dispersion; digital transmission; direct phase shift; drive voltage; fibre transmission; high extinction ratio; narrow spectrum width; pseudorandomly modulated lightwave; self-homodyne intensity modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900022
