New concepts in silicon component design using subwavelength structures

Iñigo Molina-Fernandez; Robert Halir; Alejandro Ortega-Moñux; Luis Zavargo-Peche; Sebastian Romero García; Alejandro Maese-Novo; Diego Perez-Galacho; Gonzalo Wanguemert-Perez; Pavel Cheben; Dan-Xia Xu

doi:10.1117/12.906785

2 February 2012 New concepts in silicon component design using subwavelength structures

Iñigo Molina-Fernandez, Robert Halir, Alejandro Ortega-Moñux, Luis Zavargo-Peche, Sebastian Romero García, Alejandro Maese-Novo, Diego Perez-Galacho, Gonzalo Wanguemert-Perez, Pavel Cheben, Dan-Xia Xu

Author Affiliations +

Proceedings Volume 8266, Silicon Photonics VII; 82660E (2012) https://doi.org/10.1117/12.906785
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Subwavelength gratings (SWG) are periodically segmented waveguides with a pitch small enough to suppress diffraction. These waveguides can be engineered to implement almost any refractive between the refractive indices of the material that compose the waveguide, thereby opening novel design possibilities. In this communication we explore the use of SWGs in the design and optimization of a variety of integrated optical devices in the silicon-on-insulator platform: fiber-to-chip grating couplers, polarization splitters and high performance multimode interference couplers. We furthermore show that the dispersion properties of SWGs enable the design of novel filters, and discuss the design of low transitions between SWG waveguides of different characteristics.

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Iñigo Molina-Fernandez, Robert Halir, Alejandro Ortega-Moñux, Luis Zavargo-Peche, Sebastian Romero García, Alejandro Maese-Novo, Diego Perez-Galacho, Gonzalo Wanguemert-Perez, Pavel Cheben, and Dan-Xia Xu "New concepts in silicon component design using subwavelength structures", Proc. SPIE 8266, Silicon Photonics VII, 82660E (2 February 2012); https://doi.org/10.1117/12.906785

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