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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 27,
  • Issue 19,
  • pp. 4228-4232
  • (2009)

Experimental Demonstration of Optical DQPSK Receiver Based on Frequency Discriminator Demodulator

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Abstract

This paper presents experimental data demonstrating a novel differential quadrature phase-shift keying receiver based on optical frequency discriminator demodulator with direct detection. The experimental results confirm theory, showing a factor of 2$\times$ enhanced tolerance to chromatic dispersion compared with a conventional delay-interferometer-based demodulator with balanced detection. The frequency discriminator direct detection receiver also shows a significant improvement in tolerance to Gordon–Mollenauer nonlinear phase noise.

© 2009 IEEE

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