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5 March 2021 Subwavelength grating silicon photonic devices
Iñigo Molina-Fernández, Abdelfettah Hadij-Elhouati, José Manuel Luque-González, Daniel Pereira, Alejandro Sánchez Postigo, Gonzalo Wangüenmert-Perez, Alejandro Ortega-Moñux, Robert Halir, Jose de Oliva Rubio, Jens H. Schmid, Pavel Cheben, Jiri Čtyroký
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Proceedings Volume 11691, Silicon Photonics XVI; 1169109 (2021) https://doi.org/10.1117/12.2577455
Event: SPIE OPTO, 2021, Online Only
Abstract
Periodic silicon waveguides with a pitch that is below half the effective wavelength of light support diffraction-less Bloch modes. These modes propagate as through a homogeneous, artificial-core metamaterial waveguide whose optical characteristics can be engineered by lithographic patterning. Subwavelength gratings (SWGs) provide designers with unique tools to control the refractive index, dispersion and birefringence of the equivalent metamaterial, yielding improved device performance. Based on this approach many high-performance optical devices have been designed and experimentally demonstrated in the last years. In this paper we will review the fundamentals of SWG engineering and present some of our latest findings.
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Iñigo Molina-Fernández, Abdelfettah Hadij-Elhouati, José Manuel Luque-González, Daniel Pereira, Alejandro Sánchez Postigo, Gonzalo Wangüenmert-Perez, Alejandro Ortega-Moñux, Robert Halir, Jose de Oliva Rubio, Jens H. Schmid, Pavel Cheben, and Jiri Čtyroký "Subwavelength grating silicon photonic devices", Proc. SPIE 11691, Silicon Photonics XVI, 1169109 (5 March 2021); https://doi.org/10.1117/12.2577455
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KEYWORDS
Metamaterials
Waveguides
Silicon photonics
Optical filters
Silicon
Silica
Structural design
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