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Electro-Optic ModulatorsThorlabs’ selection of electro-optic modulators includes free-space amplitude and phase modulators as well as fiber-coupled intensity and phase modulators. Thorlabs’ electro-optic modulator drivers are ideal for controlling our lithium-niobate (LiNbO3) fiber-coupled EO modulators. For those interested in all-in-one solutions for high-speed fiber optic test and measurement, we offer reference transmitters for both digital and linear applications as well as optical transmitters with phase modulators. All of our transmitters are based on proven LiNbO3 modulator technology driven by high-fidelity RF amplifiers. Also available are modulator bias controllers and tunable fiber-optic laser sources.