We experimentally demonstrate high-speed optical pseudorandom bit sequence (PRBS) multiplexing with coarse and fine bit-rate tuning capability and a switchable order using optical delays. Data multiplexing of $80\mathrm{Gbit}/\mathrm{s}$ and $160\mathrm{Gbit}/\mathrm{s}$ is shown, each with a tunable rate using a conversion/dispersion-based continuously tunable optical delay and tunable PRBS order with large switchable fiber delays. A 7% bit-rate tunability, i.e., $80–85.6\mathrm{Gbit}/\mathrm{s}$ and $160–171.2\mathrm{Gbit}/\mathrm{s}$ , is shown for both $2^7-1$ and $2^{15}-1$ PRBS. The rf spectra before and after multiplexing are measured in each case and show a suppression ratio of $>30\mathrm{dB}$ , exhibiting the expected PRBS spectral characteristics.

© 2010 Optical Society of America

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