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A new family of three-dimensional (3-D) wavelength/time/space codes for asynchronous optical code-division multiple access (OCDMA) systems with off-peak auto-correlation, ??a = 0, and peak cross-correlation, ??c = 1, is reported. With W wavelengths and T time-slots, (W 2 T + W) codes are generated. Antipodal signaling/differential detection is employed in the system. The performance is compared to the recently reported two-dimensional (2-D)/3-D codes. Arrayed waveguide grating-based reconfigurable 2-D implementation for encoder/decoder is presented. Suitability of our 3-D codes for secure OCDMA networks is discussed.