Lithium niobate proton-exchange technology for phase-amplitude modulators

Mauro Varasi; Antonello Vanucci; Mario Signorazzi

doi:10.1117/12.50886

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1 December 1991 Lithium niobate proton-exchange technology for phase-amplitude modulators

Mauro Varasi, Antonello Vanucci, Mario Signorazzi

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Proceedings Volume 1583, Integrated Optical Circuits; (1991) https://doi.org/10.1117/12.50886
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

The PE technology has been applied in the fabrication of a wide bandwidth interferometric modulator in X-cut Lithium Niobate. The utilization of dilute melt of Benzoic Acid and Lithium Benzoate as source in the H-Li exchange process, and the introduction of a subsequent appropriate thermal annealing allow to obtain high quality channel waveguide characterized by high long term stability, high electrooptical efficiency , low propagation losses, low fiber-waveguide insertion losses and high resistance to the laser radiation induced damage. The main advantages of this modulator in comparison with the similar Ti-induffusion based device are the lower fabrication cost and the possibility to handle higher optical power, allowing higher dynamic range of the signal processing system.

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Mauro Varasi, Antonello Vanucci, and Mario Signorazzi "Lithium niobate proton-exchange technology for phase-amplitude modulators", Proc. SPIE 1583, Integrated Optical Circuits, (1 December 1991); https://doi.org/10.1117/12.50886

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