Title :
1.6-b/s/Hz 6.4-Tb/s QPSK-OCDM/WDM (4 OCDM x 40 WDM x 40 Gb/s) transmission experiment using optical hard thresholding
Author :
Sotobayashi, Hideyuki ; Chujo, Wataru ; Kitayama, Ken-ichi
Author_Institution :
Independent Administrative Instn., Commun. Res. Lab., Tokyo, Japan
fDate :
4/1/2002 12:00:00 AM
Abstract :
A record of 1.6 b/s/Hz spectrum efficiency is achieved in an optical code-division-multiplexing (OCDM)/wavelength-division-multiplexing (WDM) link by quaternary phase-shift keying optical encoding/decoding along with ultrafast optical time-gating and optical hard thresholding in addition to polarization multiplexing. As a result, a transmission of 6.4 Tb/s OCDM/WDM (4 OCDM /spl times/ 40 WDM /spl times/ 40 Gb/s) using only the C-band wavelength region is experimentally demonstrated.
Keywords :
code division multiple access; high-speed optical techniques; light polarisation; optical fibre communication; quadrature phase shift keying; wavelength division multiplexing; 1.6-b/s/Hz 6.4-Tb/s QPSK-OCDM/WDM transmission experiment; 40 Gbit/s; 6.4 Tbit/s; C-band wavelength region; OCDM/WDM link; optical code-division-multiplexing; optical hard thresholding; polarization multiplexing; quaternary phase-shift keying optical encoding/decoding; spectrum efficiency; ultrafast optical time-gating; wavelength-division-multiplexing; Code division multiplexing; Decoding; Optical filters; Optical receivers; Optical recording; Optical sensors; Optical transmitters; Quadrature phase shift keying; Ultrafast optics; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
