Title :
Phase diversity receivers for homodyne detection of optical DQPSK signals
Author :
Seimetz, Matthias
Author_Institution :
Heinrich-Hertz-Inst., Fraunhofer Inst. for Commun., Berlin
Abstract :
Phase diversity (PD) receivers are an elegant option to handle the phase noise at homodyne detection and are especially interesting when used as wideband tunable wavelength-division multiplexing receivers. In the late 1980s and early 1990s, they were proposed and investigated for binary modulation formats (amplitude-shift keying, differential phase-shift keying, and frequency-shift keying). In this paper, a homodyne PD receiver for differential quadrature phase shift keying (DQPSK) modulation is analyzed, which provides a promising alternative to presently investigated DQPSK-direct-detection receivers and homodyne receivers with digital phase estimation
Keywords :
differential phase shift keying; homodyne detection; optical fibre communication; optical modulation; optical receivers; phase estimation; phase noise; quadrature phase shift keying; wavelength division multiplexing; DQPSK modulation; DQPSK signals; amplitude-shift keying; binary modulation formats; differential phase-shift keying; differential quadrature phase shift keying; digital phase estimation; direct-detection receivers; frequency-shift keying; homodyne detection; homodyne receiver; optical signals; phase diversity receivers; phase noise; tunable receivers; wavelength-division multiplexing; wideband receivers; Differential phase shift keying; Frequency shift keying; Optical detectors; Optical modulation; Optical noise; Optical receivers; Phase detection; Phase noise; Wavelength division multiplexing; Wideband; Homodyne detection; multilevel systems; optical modulation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.878503
