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1 March 2016 Design of a waveguide with optics axes tilted by 45° and realized by ion-exchange on glass
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The fabrication of on-chip optical isolators to protect integrated optical sources is one of the major challenges of research in integrated optics. Their operation principle is based on the control of the guided-wave polarization and the most common structures are composed of a polarization splitter, a non-reciprocal rotator based on the Faraday effect, and a reciprocal rotator. The reciprocal rotator is a device that rotates the wave polarization by 45°. This can be achieved by creating a relative phase shift between the waveguide’s two polarization eigen states or by twisting its optics axis thanks to an appropriate shaping of its core. In this work, we propose the design and simulation of a waveguide with optics axes tilted by 45° fabricated by two cascaded field-assisted ion exchanges on a glass substrate and an encapsulation. The dependences of the proposed design on process time, temperature, applied voltage and photolithography over-etching are investigated. The final device exhibits a 45.1° rotation of its optical axes and less than 5% variation on the C+L telecommunication band.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Elodie Jordan, Elise Ghibaudo, Aude Bouchard, Marie-Françoise Blanc-Mignon, Damien Jamon, François Royer, and Jean-Emmanuel Broquin "Design of a waveguide with optics axes tilted by 45° and realized by ion-exchange on glass", Proc. SPIE 9750, Integrated Optics: Devices, Materials, and Technologies XX, 975009 (1 March 2016);

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