Title :
Impact of Phase Noise in 60-GHz Radio-Over-Fiber Communication System Based on Passively Mode-Locked Laser
Author :
Khayatzadeh, Ramin ; Poette, Julien ; Cabon, Beatrice
Author_Institution :
Et le Lab. d´Hyperfrquences et de Caractrisation, L´Inst. de Microlectronique Electromagntisme et Photonique, Grenoble, France
Abstract :
In this paper, a radio-over-fiber (RoF) communication system at 60 GHz based on passively mode-locked laser diode (PMLLD) is presented and the performance of different electrical down-conversion methods (coherent and non-coherent down-conversion) for this communication system is studied. Impact of PMLLD phase noise on error vector magnitude (EVM) is also observed and a complete theory and experimental survey on using non-coherent down-conversion (envelope detector) to reduce error of system caused by phase instability of PMLLD is provided. The performance of envelope detector to down-convert the signal with OOK modulation in this communication system is observed using eye diagram and quality factor (Q factor) measurement.
Keywords :
Q-factor measurement; amplitude shift keying; phase noise; radio-over-fibre; semiconductor lasers; EVM; OOK modulation; PMLLD phase noise; Q factor; RoF communication system; coherent down-conversion; electrical down-conversion method; envelope detector; error vector magnitude; eye diagram; frequency 60 GHz; noncoherent down-conversion; passively mode-locked laser diode; phase instability; quality factor measurement; radio-over-fiber communication system; Adaptive optics; Envelope detectors; Optical attenuators; Optical mixing; Optical receivers; Phase noise; Envelope detector; Q factor; error vector magnitude (EVM); passively mode locked laser diode (PMLLD); phase noise; radio-over-fiber (RoF);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2322254
