Implementation and performance analysis of a new family of coherent 3-dimensional space/phase/frequency spread optical code for OCDMA networks

In his paper, we have demonstrated the feasibility of a spectrally efficient wavelength-division-multiplexing-compatible optical code-division multiple-access system using 16 phase-locked laser lines within a 40-GHz tunable window as frequency and an ultrahigh frequency resolution spectral phase encoder?decoder. Coding and decoding slots using binary [0,π ] phase chips were demonstrated for four users at 5 Gb/s, and a single coded signal was separated from four copropagating signals, with bit-error rate