2026-06-04T20:30:00Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/54912026-02-03T11:22:46Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Halir, Robert author Ortega-Moñux, Alejandro author Maese-Novo, Alejandro author Pérez-Galacho, Diego author Zavargo-Peche, Luis author Molina-Fernández, Íñigo author Wanguemert-Pérez, Juan Gonzalo author Cheben, Pavel author Schmid, Jens H. author Xu, Dan-Xia author Janz, Siegfried author Fedeli, Jean-Marc author 2013 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 R. Halir, A. Ortega-Mo˜nux, A. Maese-Novo, D. Pérez-Galacho, L. Zavargo-Peche, I. Molina-Fernández, J. G. Wangüemert Pérez P. Cheben, J. H. Schmid, D.-X. Xu, S. Janz and J.-M. Fedeli, "Engineering the optical properties of silicon using sub-wavelength structures", THE 10TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP) 28 - 30 August 2013, Seoul, South Correa (Invited) http://hdl.handle.net/10630/5491 Óptica integrada - Congresos Fotónica - Congresos Engineering the optical properties of silicon using sub-wavelength structures