Anisotropic model for the fabrication of Annealed and Reverse Proton Exchanged waveguides in congruent Lithium Niobate

Abstract

An anisotropic model for the fabrication of annealed and reverse proton exchange waveguides in lithium niobate is presented. We characterized the anisotropic diffusion properties of proton exchange, annealing and reverse proton exchange in Z-cut and X-cut substrates using planar waveguides. Using this model we fabricated high quality channel waveguides with propagation losses as low as 0.086 dB/cm and a coupling efficiency with optical fiber of 90% at 1550 nm. The splitting ratio of a set of directional couplers is predicted with an accuracy of +- 0.06.

References in corpus (3)

• Observation of dynamic localization in periodically-curved waveguide arrays
• Fast path and polarisation manipulation of telecom wavelength single photons in lithium niobate waveguide devices
• Reference frame independent quantum key distribution server with telecom tether for on-chip client

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