Autonomous and dynamic reconfigurable waveguide for optical interconnection with large shift-tolerance

Atsushi Okamoto; Kazutaka Hira; Alexander A. Grabar; Hisatoshi Funakoshi; Yuta Wakayama; Akihisa Tomita

doi:10.1117/12.874389

18 May 2011 Autonomous and dynamic reconfigurable waveguide for optical interconnection with large shift-tolerance

Atsushi Okamoto, Kazutaka Hira, Alexander A. Grabar, Hisatoshi Funakoshi, Yuta Wakayama, Akihisa Tomita

Author Affiliations +

Proceedings Volume 7944, Optoelectronic Interconnects and Component Integration XI; 79440G (2011) https://doi.org/10.1117/12.874389
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

In order to realize a dynamic reconfiguration technique that automatically switches configurations and functions of an optical device, we need a technique to control freely the connections of light inside and between devices without needing submicron-level alignments. In this study, we investigate the behavior of dynamic index gratings with nanoscale reversible self-organization in Sn₂P₂S₆ crystals that we have newly developed so as to realize an autonomous and dynamic reconfigurable optical waveguide by externally controlling its motions with light and examine its basic properties. Experimental results showed autonomous and dynamic reconfigurations of the optical waveguide formed in a Sb doped Sn₂P₂S₆ crystal with a 4 mm thickness for variations of an incident light position. We have successfully reconfigured the waveguide by a self-organization based on a photorefractive effect without cutting time series signals flowing through the waveguide, for variations of an incident light position long as approximately 2000 μm. Furthermore, we have recognized tolerance up to around 0.2 degrees for incidence angles in the experiment. This technique allows us to connect light freely without needing spatial adjustments in a nanostructured optical waveguide seen in photonic crystal fibers. Moreover, it is a technique that can be applied to dynamic connections between optical fibers and integrated waveguides accompanied with time variations of spatial modes. We also verified a possibility of removable and replaceable optical connection by utilizing large shift-tolerance of the autonomous and dynamic reconfigurable waveguide.

Citation Download Citation

Atsushi Okamoto, Kazutaka Hira, Alexander A. Grabar, Hisatoshi Funakoshi, Yuta Wakayama, and Akihisa Tomita "Autonomous and dynamic reconfigurable waveguide for optical interconnection with large shift-tolerance", Proc. SPIE 7944, Optoelectronic Interconnects and Component Integration XI, 79440G (18 May 2011); https://doi.org/10.1117/12.874389

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KEYWORDS

Waveguides

Diffraction

Crystals

Optical components

Laser crystals

Optical interconnects

Modulation

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