Corner Reflectors: Fractal Analysis and Integrated Single-Photon Sources.

In this work, the properties of the radiation emitted by a corner reflector with an electric dipole feeder are analyzed in the optical domain, where the distance between the dipole and the corner apex can be large in terms of the wavelength. A comprehensive study of the fractal properties of the radiated intensity patterns is presented. The use of this setup for the realization of single-photon sources in photonic integrated circuits is also put forward, and a detailed study of the emission properties of the device and its optimal configurations is presented.

Design and characterization of silicon nitride ultracompact integrated polarizers using bent asymmetric coupled waveguides.

In this work, we report on the design, fabrication, and characterization of integrated ultracompact polarizers of a recently proposed type based on bent coupled optical waveguides. The devices have been implemented using deep etched silicon nitride waveguides and employing only basic standard fabrication steps.

Radiation in bent asymmetric coupled waveguides.

A numerical study of the radiation in coupled bent waveguides is presented. Such arrangements of curved waveguides in reduced radiation-loss configurations can be used to enhance the quality factor of integrated microresonators. 3D full vector computations of the complex modal fields (and propagation constants) and the transient propagation effects have been performed.

Ultracompact integrated polarizers using bent asymmetric coupled waveguides.

A new type of integrated polarizer based on bent coupled optical waveguides is proposed. The simplicity of the device geometry permits its realization using only basic standard fabrication steps. A deep-etched waveguide silicon nitride TE-pass implementation is numerically investigated.

On the asymptotic evolution of finite energy Airy wave functions.

In general, there is an inverse relation between the degree of localization of a wave function of a certain class and its transform representation dictated by the scaling property of the Fourier transform. We report that in the case of finite energy Airy wave packets a simultaneous increase in their localization in the direct and transform domains can be obtained as the apodization parameter is varied. One consequence of this is that the far-field diffraction rate of a finite energy Airy beam decreases as the beam localization at the launch plane increases.