Localization in silicon nanophotonic slow-light waveguides

Localization in silicon nanophotonic slow-light waveguides

Slowing down light on a chip can lead to the development of optical buffers1, filters2,3 and memory elements4 useful for optical interconnects and for resonantly enhanced chip-based nonlinear optics. Several approaches to slow light rely on the phenomenon of light interference in a sequence of coupled resonators; however, light interference is also responsible, in disordered structures, for the...

Slow Photon Generation on Silicon NanoPhotonic Crystal Waveguides and Applications

Photonic crystal line defect waveguides show high group velocity dispersion and slow photon effect near transmission band edge. The group index of the fabricated silicon photonic crystal line defect waveguide is experimentally demonstrated as high as 45 at optical wavelength around 1558 nm. The group velocity dispersion of the fabricated silicon photonic crystal line defect waveguide is as high...

Subwavelength nanophotonic structures in silicon waveguides

We review and discuss our recent studies of subwavelength grating (SWG) structures for engineering the refractive index of silicon microphotonic waveguides. Various applications are presented, such as fiber-chip coupling structures, waveguide crossings and athermal waveguides made with a polymer-silicon hybrid core. Keywords-Silicon photonics; subwavelength gratings; fiberchip coupler; waveguid...

Enhanced photoresponsivity in graphene-silicon slow-light photonic crystal waveguides

Slow Light in Optical Waveguides

As evidenced by this Volume, there has been a flurry of activity over the last decade on tailoring the dispersive properties of optical materials [1]. What has captured the attention of the research community were some of the early results on creating spectral regions of large normal dispersion [2–4]. Large normal dispersion results in extremely small group velocities, where the group velocity ...