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Frequency Estimation in Intradyne Reception

IEEE Photonics Technology Letters · 2007 · Vol. 19(6) · pp. 366–368

A. Leven✉(Nokia (United States))Noriaki Kaneda(Alcatel Lucent (Germany))Ut-Va Koc(Nokia (United States))Young-Kai Chen(Nokia (United States))

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Abstract

We report on an optical intradyne receiver experiment with frequency estimation. Frequency estimation allows, if performed prior to block phase estimation or other phase recovery techniques, for a much higher frequency difference between transmit laser and local oscillator laser. We demonstrate the feasibility of our approach in a 20-Gb/s quadrature phase-shift keying experiment

Advanced Fiber Laser Technologies Optical Network Technologies Photonic and Optical DevicesLocal oscillatorPhase-shift keyingQuadrature (astronomy)Phase (matter)Computer scienceLaserKeyingPhase noiseOpticsElectronic engineering

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Compensation of Quadrature Imbalance in an Optical QPSK Coherent Receiver