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Opt Lett. 2010 Jun 1;35(11):1819-21. doi: 10.1364/OL.35.001819.

Continuously tunable 1.16 micros optical delay of 100 Gbit/s DQPSK and 50 Gbit/s DPSK signals using wavelength conversion and chromatic dispersion.

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1
Department of Electrical Engineering-Systems, University of Southern California,3740 McClintock Avenue, EEB 500, Los Angeles, California, 90089, USA. nuccio@usc.edu

Abstract

We demonstrate a variable optical delay element that uses tunable wavelength conversion and phase conjugation in highly nonlinear fiber and uses chromatic dispersion in dispersion-compensating fiber. A continuous delay of up to 1.16mus, equaling a >110,000 time-delay bit-rate product for 100 Gbit/s non-return-to-zero differential quadrature phase-shift-keying (NRZ-DQSPK) and >55,000 for 50 Gbit/s NRZ differential phase-shift-keying (NRZ-DPSK) modulation formats, is demonstrated. Bit error rates <10(-9) are demonstrated for each waveform at various delay settings.

PMID:
20517427
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