Elements of Electromagnetic Theory, Anisotropic Media, and Light Modulation by the Linear Electro-Optic Effect
نویسنده
چکیده
The purpose of this note is to introduce the linear electro-optic effect (Pockels effect) and its applications for modulating the properties of a light wave, such as its phase, polarisation and intensity. For this purpose, basic electromagnetic theory is first reviewed. Some elements of light propagation in an anisotropic medium are then introduced. The linear electro-optic effect is then presented and illustrated using the classic example of KDP crystals. Due to its importance for modulation applications in optical communication systems, the use of lithium niobate (LiNbO3) crystals is also discussed in details. Typical electrooptic modulation configurations are introduced. Finally, transit time limitations and their implications for high speed modulation are also discussed.
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