Investigation on the Phase Noise and EVM of Digitally Modulated Millimeter Wave Signal in WDM Optical Heterodyning System

• Published in: Journal of lightwave technology Vol. 30; no. 6; pp. 876 - 885
• Main Authors: Tong Shao, Paresys, F., Maury, G., Le Guennec, Y., Cabon, B.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 15-03-2012; Institute of Electrical and Electronics Engineers; Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA)
• Subjects: Applied sciences; Engineering Sciences; Error vector magnitude (EVM); Exact sciences and technology; Information, signal and communications theory; Multiplexing; Optical amplifiers; optical delay; Optical fiber communications; Optical fibers; optical heterodyning; Optical mixing; Optical noise; Optical telecommunications; Optical variables measurement; Optics; Phase noise; Photonic; radio over fiber (RoF); Signal and communications theory; Telecommunications; Telecommunications and information theory; wavelength division multiplexing (WDM); Phase noise; Optical path; radio over fiber (RoF); Phase measurement; optical delay; Modulated signal; Microwave; Wavelength division multiplexing; Noise measurement; Timbre; Heterodyne; Error vector magnitude (EVM); Digital signal; Millimetric wave; Optical fiber network; Wide band signal; Theoretical model; Coherence; wavelength division multiplexing (WDM); Optical fiber communication; Delay time; Signal conversion; Radio communication; optical heterodyning; phase noise; error vector magnitude (EVM)
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2012.2183340

In this paper, theoretical model on phase noise in self-heterodyning optical system for mmW generation is proposed. Phase noise is impacted by optical path difference between both optical tones and laser source coherence time, but also by RF generators phase noise. Phase noise measurements of the mmW signal and RF sources have been realized to discuss the validity of the model. Based both on the theoretical approach and on the phase noise characterizations, an error vector magnitude (EVM) model is developed to quantify the impact of the optical self-heterodyning output phase noise on up-converted broadband digital signal (ECMA 387 standard).