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We demonstrate optical multiplexing of two 21.5 Gb/s DPSK signals into a single 43 Gb/s RZ-DQPSK channel with simultaneous 7-fold multicasting of the multiplexed 43 Gb/s RZ-DQPSK signal in a single periodically-poled lithium-niobate waveguide. We also demonstrate direct 7-fold multicasting of a single 43 Gb/s RZ-DQPSK signal and give a comparison of the two schemes. A bit error rate of 10−9 with power penalties < 5 dB was obtained for all multicasted RZ-DQPSK signals with 100 GHz channel spacing.
© 2009 Optical Society of America
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