Integrated Optics Devices Based on Liquid Crystals

Abstract

We describe the technology behind a platform for integrated optics based on liquid crystals. Design and technological issues are addressed and effective technological solutions are presented. The physical implementation of optical waveguides characterized by a practical and reproducible process based on preferential etching of crystalline silicon substrates are presented. Devices are manufactured by wet etching a Si substrates first and then by thermally growing thick SiO₂ cladding layer. A nematic liquid crystal is used as core of the waveguiding devices. Experimental results on polarizing properties and single mode propagation of infrared light are presented and discussed.

Keywords:

• integrated optic polarizers
• optical waveguides
• packaging
• silicon photonics

Acknowledgments

Work supported in part by the European Community's Human Potential Programme under contract, HPRN-CT-2002-00202, SAMPA.

Bob Bellini acknowledges the financial support provided through the European Community's Human Potential Programme under contract HPRN-CT-2002-00202, SAMPA.