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Opt Express. 2010 May 10;18(10):10282-8. doi: 10.1364/OE.18.010282.

OTDM to WDM format conversion based on quadratic cascading in a periodically poled lithium niobate waveguide.

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  • 1Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK.


We propose and demonstrate error-free conversion of a 40 Gbit/s optical time division multiplexed signal to 4 x 10 Gbit/s wavelength division multiplexed channels based on cascaded second harmonic and difference frequency generation in a periodically poled lithium niobate waveguide. The technique relies on the generation of spectrally (and temporally) flat linearly chirped pulses which are then optically switched with short data pulses in the nonlinear waveguide. Error-free operation was obtained for all channels with a power penalty below 2dB.

(c) 2010 Optical Society of America.

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