Optical and quantum electronics towards higher scalability of hybrid optical CDMA network

Glesk, Ivan and Osadola, Tolulope B. and Kwong, Wing C. (2017) Optical and quantum electronics towards higher scalability of hybrid optical CDMA network. Optical and Quantum Electronics, 49 (8). 267. ISSN 0306-8919

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    Abstract

    A novel approach for improving the number of simultaneous users in a hybrid OCDMAOTDMA network is proposed and analysed. OCDMA system is based on two-dimensional wavelength-hopping time-spreading codes with multi-wavelengths picosecond carriers. The scalability increase was achieved by adding a third dimension to separate OCDMA user groups within OTDMA time slots by assigning them into different wavelength bands. We have shown this will scale-up the system capacity proportionally to the number of assigned wavelength bands. A self-clocking all-optical time gate was then demonstrated as an effective means for suppressing the growing detrimental multi access interference noise resulted from this capacity increase.