Article | REF: E3331 V1

Microwave optoelectronics - Modulation, links and switching

Authors: Béatrice CABON, Jean CHAZELAS, Daniel DOLFI

Publication date: November 10, 2003

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3. Optical switching

Optical switching relies on the ability to independently vary the refractive indices of the different parts making up the switch. The main physical phenomena that can modulate the refractive index of a material are presented in the following paragraphs in terms of the interactions between light and electric fields, acoustic waves and heat via the propagation medium, and their characteristics are summarized in table 2 .

3.1 Switching principles

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3.1.1 Thermo-optical...

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