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Experimental Demonstration of Optical DQPSK Receiver Based on Frequency Discriminator Demodulator

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4 Author(s)
Cheng-Chung Chien ; Dept. of Electr. Eng., Univ. of California, Riverside, CA, USA ; Yi-Hsiang Wang ; Lyubomirsky, I. ; Lyubomirsky, I.

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 2times 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.

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Lightwave Technology, Journal of  (Volume:27 ,  Issue: 19 )