J. Gonzalo Wangüemert-Pérez

TL;DR: Sub-wavelength structures with a subwavelength pitch have been known since Hertz conducted his first experiments on the polarization of electromagnetic waves as discussed by the authors, and their applications include anti-reflective coatings, polarization rotators, high-efficiency fiber-chip cou-plers, spectrometers, highreflectivity mirrors, athermal waveg- uides, multimode interference couplers.

TL;DR: A comprehensive review of the state of the art in subwavelength silicon structures, including recent applications including broadband waveguide couplers, high-sensitivity evanescent field sensors, low-loss devices for mid-infrared photonics, polarization management structures, spectral filters, and highly efficient fiber-to-chip coupler.

TL;DR: It is shown that by subwavelength patterning of silicon-wire waveguides the field delocalization can be engineered to increase the sensitivity, achieving sensitivities of 0.83 RIU/RIU and 1.5·10(-3)‬ RIU/nm for bulk and surface sensing.

TL;DR: A measured fiber-chip coupling efficiency of -1.3 dB is reported, the highest coupling efficiency achieved to date for a surface grating coupler in a 220 nm silicon-on-insulator platform fabricated in a conventional dual-etch process without high-index overlays or bottom mirrors.

TL;DR: This work proposes a novel method to implement a compact and fabrication-tolerant polarization splitter and rotator on the silicon-on-insulator platform that has a low TM-to-TE polarization conversion loss, and the use of SWG index engineering improves the waveguide width fabrication tolerance substantially.