Ahmed J., Siyal M.Y., Adeel F., Hussain A. Optical Signal Processing by Silicon Photonics

Springer, 2013. — 131 p.Optical fibre communication is the most promising technology to meet the ever growing need of bandwidth in the present technological era. It not only provides high capacity transmission but also offers flexibility in transportation of data on a network. The major obstacle in further increase in transmission capacity is the use of electronics in signal processing functions and signal amplification. Many researchers and scientists came up with different solutions to eliminate electronics and presented all-optical signal processing techniques. Among these techniques, the use of Self Phase Modulation (SPM), Cross Phase Modulation (XPM), Raman Scattering and Four Wave Mixing (FWM) are well considered but FWM is more attracting due to its inherited benefits. Silicon-on-Insulator (SOI) waveguide devices are emerging to realize any modern optical signal processing scheme. The recent technological improvements in silicon photonics is the main driving force behind the success of these devices. Using nonlinear optical phenomenon in silicon wires and their compatibility with CMOS devices provides the platform for integrated photonic devices. All optical signal processing devices are being investigated and explored at present; however the chip-scale solution provided by silicon photonic is the preferred solution. In this book, the authors have intended to present the summary of their research work in this area. The book focuses on achieving successful optical frequency shifting by Four Wave Mixing (FWM) in silicon-on-insulator (SOI) waveguide by exploiting a nonlinear phenomenon. This book presents the basic facts, concepts, principles and applications of the nonlinear effects inside the Silicon-on-Insulator waveguide. In this research, in order to achieve optical frequency shifting by FWM in SOI waveguide, a nonlinear phenomenon has been applied successfully. Further, the text is aimed at making graduate students understand the nonlinear effects inside SOI waveguide and possible applications of the latter in this emerging and dominating area of research. The devices manufactured using this technology and the inherent obstacles of the structure faced for some of the fruitful applications are also discussed in this book. The FWM process in SOI waveguides is explained with an emphasis on the effects of two-photon absorption and the consequent free-carrier effects.
The optimization of frequency shifting, conversion efficiency and the effect of different parameters on conversion efficiency are also taken into account. Keeping in view the anticipated curiosity of readers, the complete simulation and its subsequent results have explicitly been discussed and demonstrated with illustrating diagrams. It will certainly be more interesting for the readers to know that how the all-optical frequency shifting using single pulsed pump light takes place. The book further encompasses the study of losses due to two photon and free carrier absorption and how to overcome these losses with SOI waveguides.Contemporary and Future Trends in Optics
Modern Optical Networks
Advancements in Silicon Photonics
High-Nonlinearity in Glass Fibers and Cross-Phase Modulation
Supercontinuum Generation by Nonlinear
All-Optical Frequency Shifting
Four Wave Mixing in Silicon Photonics
FWM Implementation and Analysis Using MatLAB