Title :
Noise due to fiber dispersion in phase dithered microwave fiber optic links
Author :
Cheng, Linghao ; Aditya, Sheel ; Li, Zhaohui ; Lu, Chao
Author_Institution :
Inst. for Infocomm Res., Nanyang Technol. Univ., Singapore
Abstract :
We study the noise due to fiber dispersion in a scenario of phase dithering to suppress stimulated Brillouin scattering (SBS) in microwave fiber optic links. A novel large signal analysis is given to calculate the logarithmic signal spectrum. Our experiments and numerical analysis show that, besides the random noise due to phase modulation, there are discrete spectral lines spaced at the dither rate in the detected signal, which may act as interference. Our analysis reveals that these discrete spectral lines are caused by sharp rising/falling edges in the PRBS used for phase dithering. The study should also be useful for analyzing noise in digital phase modulated microwave fiber optic systems
Keywords :
Fourier transforms; optical fibre communication; optical fibre dispersion; optical noise; random noise; spectral analysis; stimulated Brillouin scattering; Fourier transform; digital phase modulated microwave fiber optic systems; discrete spectral lines; fiber dispersion noise; logarithmic signal spectrum; microwave fiber optic links; phase dithering; phase modulation; random noise; stimulated Brillouin scattering suppression; Brillouin scattering; Interference; Numerical analysis; Optical fibers; Optical noise; Phase detection; Phase modulation; Phase noise; Signal analysis; Signal detection;
Conference_Titel :
Advances in Wired and Wireless Communication, 2005 IEEE/Sarnoff Symposium on
Conference_Location :
Princeton, NJ
Print_ISBN :
0-7803-8854-2
DOI :
10.1109/SARNOF.2005.1426523
