Semiconductor Integrated Optics for Switching Light

Semiconductor Integrated Optics for Switching Light

Charlie Ironside
ISBN: 9781681745206 | PDF ISBN: 9781681745213
Copyright © 2017 | 74 Pages | Publication Date: September, 2017

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This book covers the technology of switching or modulating light in semiconductor optical waveguides. Currently a key function for optical communications systems is the conversion of data from an electrical signal to an optical signal for transmission in very low loss optical fibres and the converse process of optical to electrical conversion the O/E/O data conversion. This conversion between electronic and photonic signals imposes an energy consumption overhead on optical communication systems. So many research workers have been attracted to ultrafast all-optical switching of data in different formats. As a way of introduction to all-optical switching in semiconductor waveguides the book covers the electro-optic effect, electroabsorption and electrorefraction; effects that can be used in semiconductor optical modulation devices. But the book focuses on all-optical switching using second and third order optical nonlinearities in AlGaAs optical waveguides. It covers a variety of device configurations including integrated nonlinear couplers and Mach-Zehnder interferometers. Further, it provides design software in suit of Mathematica notebooks that can be used to explore the device design.

Table of Contents

1. Introduction
1.1 Introduction
1.2 Switching
1.3 Linear optics: response theory and the Kramers-Kronig transformation
1.4 Nonlinear optics
1.5 Integrated optics - Semiconductor Optical waveguides
1.6 Outline of book

2. Linear Electro-optic effect, Electroabsorption and Electrorefraction
2.1 Dielectricifcation: Linear Electro-optic effect, Electrorefraction and Electroabsorption
2.2 Electroabsorption & Electrorefraction Effects
2.3 The Electroabsorption Modulator (EAM)
2.3.1 The Electroabsorption modulator (EAM) Franz-Keldysh effect in bulk semiconductor
2.4 Electro-refractive modulators
2.4.1 The directional coupler
2.4.2 The integrated electro-refractive Mach-Zehnder interferometer
2.5 Conclusion

3. Nonlinear Refraction: 2nd and 3rd Order optical nonlinearities
3.1 Introduction
3.2 Cascade 2nd Order Optical nonlinearity nonlinear phase change
3.2.1 Theory of Cascade 2nd Order Optical nonlinearity
3.2.2 AlGaAs waveguide example of the cascade second harmonic effect
3.3 Two photon effects
3.3.1 Two Photon Absorption and nonlinear refraction
3.3.2 The AlxGa1-xAs example
3.3.3 Two photon gain
3.4. Conclusions

About the Author(s)

Charlie Ironside, Curtin University
Professor Charlie Ironside is a professor in the Department of Physics and Astronomy at Curtin University (Western Australia). He received his PhD from Heriot-Watt University (Edinburgh) and in 1998 was appointed Professor of Quantum Electronics at the University of Glasgow. He has over 30 years of experience in semiconductor optoelectronics research and in particular, microfabrication of photonic components. He is a Fellow of the IET, a Fellow of the IOP, and senior member of IEEE. Along with hundreds of papers, he has co-authored five patents.

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