1. Engineering the optical properties of silicon using sub-wavelength structures
- Author
-
Alejandro Maese-Novo, J-M. Fedeli, Siegfried Janz, Diego Perez-Galacho, Jens H. Schmid, Dan-Xia Xu, L. Zavargo-Peche, J. G. Wanguemert Perez, Robert Halir, Alejandro Ortega-Moñux, Pavel Cheben, and Íñigo Molina-Fernández
- Subjects
Diffraction ,Dispersion engineering ,Materials science ,sub-wave length grating ,Silicon ,photonics ,Silicon photonics ,chemistry.chemical_element ,Physics::Optics ,Optics ,Dispersion (optics) ,dispersions ,sub-wavelength structures ,Diffraction grating ,Óptica integrada - Congresos ,diffraction effects ,refractive index ,Fotónica - Congresos ,Subwavelength structures ,business.industry ,silicon ,waveguiding structures ,Integrated optics ,dispersion engineering ,chemistry ,Optoelectronics ,Power dividers and directional couplers ,ultra-broadband ,business ,degree of freedom ,Refractive index ,multimode interference couplers ,dispersion (waves) - Abstract
In most integrated optics platforms, including silicon-on-insulator, only minor modifications in refractive index are possible. The geometry of the waveguiding structure is thus the only degree of freedom for the design of devices. The use of sub-wavelength gratings (SWGs), i.e. structures that are small enough to suppress diffraction effects, enables local engineering of both refractive index and dispersion, thereby opening new possibilities for device design. Here we present some of the recent advances in refractive index and dispersion engineering using silicon SWGs, focussing on ultra-broadband and compact multimode interference couplers and directional couplers. © 2013 IEEE., 2013 IEEE 10th International Conference on Group IV Photonics, GFP 2013, 28 August 2013 through 30 August 2013, Seoul
- Published
- 2013