A coding/decoding setup for a spectral phase encoding optical code-division multiple access (SPE-OCDMA) system has been developed. The proposal is based on the temporal self-imaging effect and the use of an easily tunable electro-optic phase modulator to achieve line-by-line coding of the transmitted signal, thus assuring compatibility with WDM techniques. Modulation of the code is performed at the same rate as the data, avoiding the use of high-bandwidth electro-optic modulators. As proof of concept of the technique, experimental results are presented for a back-to-back coder/decoder setup transmitting a unmodulated optical pulse train within an optical window and using 8-chip Hadamard codes.
© 2011 Optical Society of AmericaFull Article | PDF Article
Bernard B. Wu and Evgenii E. Narimanov
Opt. Express 14(9) 3738-3751 (2006)
Xu Wang and Naoya Wada
Opt. Express 15(12) 7319-7326 (2007)
D. Pastor, W. Amaya, R. García-Olcina, and S. Sales
Opt. Lett. 32(13) 1896-1898 (2007)