Abstract

We demonstrate a variable, optical-delay element using tunable wavelength conversion in a periodically poled lithium niobate waveguide, dispersion-compensating fiber and intrachannel dispersion compensation. A delay of up to 105ns is demonstrated using 80Gbs return-to-zero differential-quadrature phase-shift keying, 40Gbs return-to-zero differential phase-shift keying, and 40Gbs return-to-zero on–off keying modulation formats. Bit-error rates <109 are demonstrated for each waveform at various delay settings.

© 2009 Optical Society of America

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