RT Conference Proceedings
T1 Subwavelength gratings for sensing and polarization management
A1 Wanguemert-Pérez, Juan Gonzalo
A1 Cheben, Pavel
A1 Ortega-Moñux, Alejandro
A1 Pérez-Galacho, Diego
A1 Alonso-Ramos, C.
A1 Halir, Robert
A1 Molina-Fernández, Íñigo
A1 Xu, Dan-Xia
A1 Schmid, Jens H.
K1 Ondas electromagnéticas - Polarización
AB Sub-wavelength grating (SWGs) structures are becoming important building blocks in planar waveguide photonic devices [1]. SWG structures have been successfully applied in the design of a range of devices with remarkable performance by using refractive index engineering and dispersion engineering techniques [2]. In this work we explore two new promising applications of these structures, namely in evanescent field waveguide sensing and polarization management. For the evanescent waveguide sensing devices, we show that sub- wavelength patterning of silicon wires can be used to control the delocalization of the waveguide mode and therefore enhance both bulk and surface sensitivities (Fig. 1). We will also discuss the implementation of subwavelength structures in efficient polarization splitter and rotator (PSR) devices [3]. PSR devices based on asymmetrical directional couplers typically exhibit stringent fabrication tolerances. We show that by implementing SWG structures in PSR design both the effective mode index and its derivatives with respect to critical dimensions can be controlled, which significantly improves tolerance to fabrication errors (Fig. 2).
YR 2014
FD 2014-05-12
LK http://hdl.handle.net/10630/7498
UL http://hdl.handle.net/10630/7498
LA eng
NO Universidad de Málaga, Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026