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 is demonstrated using return-to-zero differential-quadrature phase-shift keying, return-to-zero differential phase-shift keying, and return-to-zero on–off keying modulation formats. Bit-error rates are demonstrated for each waveform at various delay settings.
© 2009 Optical Society of America
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