High-index-contrast chalcogenide waveguides

Christi K. Madsen; Mehmet Solmaz; Robert Atkins

doi:10.1117/12.768583

8 February 2008 High-index-contrast chalcogenide waveguides

Christi K. Madsen, Mehmet Solmaz, Robert Atkins

Proceedings Volume 6897, Optoelectronic Integrated Circuits X; 689703 (2008) https://doi.org/10.1117/12.768583
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

Recent work on vertically-integrated electro-optic and chalcogenide waveguides is reviewed. By integrating As₂S₃ chalcogenide glass with Ti-diffused lithium-niobate (LiNbO₃) waveguides, we are able to dramatically increase the integration density for this electro-optic waveguide platform. As₂S₃ offers a higher refractive index compared to the LiNbO₃ and consequently enables low-loss, small-bend-radii structures that are crucial for making high density optical circuits. As₂S₃ waveguides are patterned on top of LiNbO₃ waveguides. Adiabatic tapers are used to couple light from the LiNbO₃ waveguide into the As₂S₃ waveguide. Bend radii that are less than a hundred microns are enabled using this approach, compared to LiNbO₃ waveguide bend radii that are typically on the order of a centimeter. The design and fabrication are discussed along with experimental results for s-bend structures.

Citation Download Citation

Christi K. Madsen, Mehmet Solmaz, and Robert Atkins "High-index-contrast chalcogenide waveguides", Proc. SPIE 6897, Optoelectronic Integrated Circuits X, 689703 (8 February 2008); https://doi.org/10.1117/12.768583

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