Jean Lapointe

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: Experimental measurements indicate a propagation loss as low as 2.1 dB/cm for subwavelength grating waveguide with negligible polarization and wavelength dependent loss, which compares favourably to conventional microphotonic silicon waveguides.

TL;DR: Two experimental examples of refractive index engineering are demonstrated, namely, a microphotonic fiber-chip coupler with a coupling loss as small as -0.9dB and minimal wavelength dependence and a planar waveguide multiplexer with SWG nanostructure, which acts as a slab waveguide for light diffracted by the grating, while at the same time acting as a lateral cladding for the strip waveguide.

TL;DR: In this paper, a Si photonic wire waveguide was incorporated into a Mach-Zehnder interferometer based sensor, configured to monitor the index change of a homogeneous solution.

TL;DR: A 50-channel high-resolution arrayed waveguide grating microspectrometer with a 0.2 nm channel spacing on a silicon-on-insulator (SOI) platform with high channel density and spectral resolution is demonstrated.