Modified Gardner phase detector for Nyquist coherent optical transmission systems

Nebojsa Stojanovic,Changsong Xie,Zhao Yu,Bangning Mao,Neil Guerrero Gonzalez,Juan Qi,Le Nguyen Binh

Modified Gardner phase detector for Nyquist coherent optical transmission systems

2013

Nebojsa Stojanovic
Changsong Xie
Zhao Yu
Bangning Mao
Neil Guerrero Gonzalez
Juan Qi
Le Nguyen Binh

We present a novel timing recovery scheme based on a Gardner phase detector performing excellently in spectrally efficient Nyquist coherent optical systems. Good clock tone performance is obtained for QAM modulation formats and roll-off factor (ROF) values close to 0.

Keywords:

Quadrature amplitude modulation
Optical modulation amplitude
Nyquist–Shannon sampling theorem
Phase detector
Electronic engineering
Cross-phase modulation
QAM
Modulation
Optical performance monitoring
Physics
Optics
Radio over fiber

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