RT Journal Article
T1 Broadband fiber-chip zero-order surface grating coupler with 0.4 dB efficiency.
A1 Sánchez-Postigo, Alejandro
A1 Wanguemert-Pérez, Juan Gonzalo
A1 Luque-González, José Manuel
A1 Molina-Fernández, Íñigo
A1 Cheben, Pavel
A1 Alonso-Ramos, Carlos A.
A1 Halir, Robert
A1 Schmid, Jens H.
A1 Ortega-Moñux, Alejandro
K1 Redes de banda ancha
K1 Nanofotónica
AB Surface grating couplers enable efficient coupling of light between optical fibers and nanophotonic waveguides. However, in conventional grating couplers, the radiation angle is intrinsically wavelength dependent, thereby limiting their operation bandwidth. In this Letter, we present a zero-order surface grating coupler in silicon-on-insulator which overcomes this limitation by operating in the subwavelength regime. By engineering the effective refractive index of the grating region, both high coupling efficiency and broadband operation bandwidth are achieved. The grating is assisted by a silicon prism on top of the waveguide, which favors upward radiation and minimizes power losses to substrate. Using a linear apodization, our design achieves a coupling efficiency of 91% (−0.41 dB) and a 1-dB bandwidth of 126 nm.
PB Optica Publishing Group
YR 2016
FD 2016-06-24
LK https://hdl.handle.net/10630/32952
UL https://hdl.handle.net/10630/32952
LA eng
NO Alejandro Sánchez-Postigo, J. Gonzalo Wangüemert-Pérez, José Manuel Luque-González, Íñigo Molina-Fernández, Pavel Cheben, Carlos A. Alonso-Ramos, Robert Halir, Jens H. Schmid, and Alejandro Ortega-Moñux, "Broadband fiber-chip zero-order surface grating coupler with 0.4 dB efficiency," Opt. Lett. 41, 3013-3016 (2016)
NO Política de acceso abierto tomada de: https://v2.sherpa.ac.uk/id/publication/13362
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026