Title :
Demonstration of an eight-user 115-Gchip/s incoherent OCDMA system using supercontinuum generation and optical time gating
Author :
Brès, Camille-Sophie ; Glesk, Ivan ; Prucnal, PAul R.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ, USA
fDate :
4/1/2006 12:00:00 AM
Abstract :
A system demonstration of an eight-user optical code-division multiple-access (OCDMA) star network, operating at 115 Gchip/s, with a single user bit rate of 5 Gb/s is presented. Error-free transmission is obtained (10-13 bit-error rate or better). Our two-dimensional time-wavelength incoherent OCDMA encoding is based on supercontinuum generation and spectral slicing; quadratic-congruence prime codes are generated using off-the-shelf components. Integrated ultrafast delay lines based on spiral waveguides enable rapid selectivity at the decoder. The need for optical time gating at high data rate to remove multiple-access interference at the receiver is also investigated.
Keywords :
code division multiple access; encoding; error statistics; high-speed optical techniques; optical delay lines; optical fibre communication; supercontinuum generation; 5 Gbit/s; bit-error rate; encoding; incoherent OCDMA; integrated ultrafast delay lines; multiple-access interference; optical code-division multiple-access; optical time gating; quadratic-congruence prime codes; receiver; spectral slicing; spiral waveguides; supercontinuum generation; Bit error rate; Bit rate; Encoding; Multiaccess communication; Nonlinear optics; Optical fiber networks; Optical receivers; Optical waveguides; Supercontinuum generation; Ultrafast optics; Fiber-optic communications; optical code-division multiple-access (OCDMA); supercontinuum (SC); time gating;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.872337
