Photonic theory design and simulations - 7Virtual room: INO - 2
|Thursday, May 28|
TD-7-28-1 / Lateral leakage in integrated photonics: theory and applications
Thach Nguyen, RMIT University
Andreas Boes, RMIT University
* Arnan Mitchell, RMIT University, Australia
This presentation presents an overview of lateral leakage in integrated photonics due coupling between the bound mode of a waveguide operating in one polarization and the continuum of radiation in the nominally orthogonal polarization. The talk covers the physical origins and provides insight into how this effect can be suppressed or harnessed. The talk presents several experimental observations and device demonstrations based on lateral leakage including new resonant filters in silicon photonics and nonlinear wavelength conversion in thin-film lithium niobate. We conclude with an outlook for how lateral leakage may impact future integrated photonic circuits
TD-7-28-2 / Recent advances in optical metasurfaces
* Y. Denizhan Sirmaci, Abbe Center of Photonics - Friedrich-Schiller-University Jena
Isabelle Staude, Abbe Center of Photonics - Friedrich-Schiller-University Jena, Germany
Optical metasurfaces consisting of designed nanoresonators arranged in a planar fashion were successfully demonstrated to allow for the realization of a large variety of flat optical components. While most metasurfaces realized so far focussed on the isolated scattering properties of the metasurfaces themselves, the opportunities offered by tailoring the substrate properties are often neglected. Here we experimentally demonstrate several metasurface architectures that derive additional functionalities and potential from carefully tailored substrate properties.
TD-7-28-3 / Recent results in surface nanoscale axial photonics
* M. Sumetsky, Aston University, United Kingdom
Surface Nanoscale Axial Photonics (SNAP) platform, introduced in 2011, enables fabrication of nanoscale-shallow microresonator structures at the surface of an optical fiber with subangstrom precision. It employs whispering gallery modes circulating and slowly propagating along the fiber. First, I review the SNAP theory, which resembles one-dimensional quantum mechanics, and its fabrication methods. Next, I discuss our recent experimental and theoretical results on interplaying slow and tunneling light, resonant tunneling, and nonlinear SNAP. Finally, I switch to microfluidics and describe our recent experiments where temporary and permanent SNAP microresonators are induced by water in silica microcapillaries.