A photonic encoder–decoder pair for optical code-division multiplexing (OCDM) that uses time-to-space converters and angle-multiplexed holograms is proposed. The encoder converts the pulse from each input port into a specific code and multiplexes input signals into the output port. The hologram in the decoder generates a correlation waveform between the transmitted code and the recorded code. The performance of the OCDM system with the encoder–decoder pair is estimated. The maximum spectral efficiency for 8-bit length orthogonal codes in the worst case at a bit-error rate of 10−9 is 0.17 (bits/s)/Hz when the number of channels is 8.
© 2002 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4230) Fiber optics and optical communications : Multiplexing
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(090.4220) Holography : Multiplex holography
(200.4560) Optics in computing : Optical data processing
Hiroyuki Tsuda and Hirokazu Takenouchi, "Photonic Encoder and Decoder for Optical Code-Division Multiplexing with Time-to-Space Converters and Angle-Multiplexed Holograms," Appl. Opt. 41, 290-297 (2002)