Numerical Analysis of All-Optical Microwave Mixing and Bandpass Filtering in an RoF Link

In this paper, all-optical signal processors that perform both microwave mixing and bandpass filtering in a radio-over-fiber (RoF) link are presented. The key device is a Mach-Zehnder modulator (MZM) which performs all-optical microwave mixing. An up-converted microwave signal is obtained and other unwanted frequency components are suppressed at the end of the fiber span.




References:
[1] S. khosroabadi and M. R. Salehi, "Analysis of microwave photonic
notch filter with tunable parameters," IEEE Proc. Int. Conf. on Signal
Processing, Dubai 2007, pp. 860-863.
[2] S. khosroabadi and M. R. Salehi, "Optical generation of tunable
millimeter-wave signals using optical phase modulator and optical
attenuator element," ICEE2008 Conf. on Electrical and Electronic
Engineering, Published, 2008.
[3] F. Zeng and J. Yao, "All-optical bandpass microwave filter based on an
electro-optic phase modulator," Opt. Express, vol. 12, pp.3814-3819,
2004.
[4] F. Zeng and J. Yao, "Investigation of phase-modulated-based all-optical
bandpass microwave filter," Journal of Lightwave Technology, vol. 23,
pp. 1721-1728, 2005.
[5] G. K. Gopalakrishnan, W. K. Burns and C. H. Bulmer, "Microwave
optical mixing in LiNbO3 modulators," IEEE Trans. Microwave Theory
Tech., 41, pp. 2383-2391, 1993.
[6] J. Wang and J. Yao, "A Tunable Photonic Microwave Notch Filter
Based on All-Optical Mixing," IEEE Photonics Technol. Lett, vol. 18,
2006.