Title :
Analytical study of the optical spectrum shift in a modulating channel
Author :
Mencarelli, Davide ; Di Donato, Andrea ; Rozzi, Tullio
Author_Institution :
Dept. of Electromagn., Univ. of Ancona, Italy
Abstract :
In this work, an analytical model of the frequency shift experienced by an optical signal passing through a traveling wave modulating channel is derived. The model starts from the well-known coupled-mode theory but holds for an arbitrary temporal envelope of the optical signal and for any time dependence of the slowly varying modulating field; it provides an analytical and accurate explanation of various effects such as those due to losses or microwave-optical group velocity mismatch. The practical example of a modulated optical Gaussian pulse is provided.
Keywords :
coupled mode analysis; microwave photonics; optical modulation; coupled-mode theory; microwave-optical group velocity mismatch; modulated optical Gaussian pulse; modulating channel; optical spectrum shift; slowly varying modulating field; traveling wave modulating channel; Frequency conversion; Microwave theory and techniques; Nonlinear optics; Optical coupling; Optical filters; Optical modulation; Optical pulses; Optical refraction; Optical variables control; Signal analysis; Electrooptic nonlinear effect; optical frequency conversion; traveling-wave modulation;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.862469
