A family of multiple-length, constant-weight wavelength-time optical orthogonal codes is constructed. The codes are suitable for integration of multimedia services with different quality-of-service requirements and signaling rates in optical code-division multiple-access systems with fiber-Bragg-grating array encoders/decoders. The rate and service quality are dynamically matched to users' needs through the assignment of different-length wavelength-time code patterns, as illustrated.
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