Integrated Electro-optic Devices
Integrated electro-optic devices serve the functions of rapid light modulation, time-multiplexing, signal routing, tunable filtering, and polarization conversion. They are attractive devices due to their potential applications for wide-band optical communication, optical signal processing, and sensors. Today, most interest is given to electro-optic devices on LiNbO3 because of the known technology for fabricating optical strip waveguides, their large modulation bandwidth B beyond 10 GHz and their relatively low driving power of about 100 mW. The growing interest in semiconductor-based integrated optics resulted in various examples of electrooptic modulators on GaAs- and InP-substrates. We compare both technologies. However, emphasis is given here to the operational principles, the configurations, and properties of LiNbO3 modulators with titanium indiffused strip waveguides.
KeywordsChannel Waveguide Output Waveguide Electrode Length Polarization Conversion Cross State
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