(Optical Society of America, 2015) García López, Óscar; Thourhout, Dries Van; Lasaosa Medarde, Daniel; López-Amo Sáinz, Manuel; Baets, Roel; Galarza Galarza, Marko; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
A new concept for the fabrication of integrated microring
resonators, requiring only one single epitaxial growth and two single-side
lithographic steps, is proposed in what is the simplest fabrication scheme
for vertical microrings published to date. The approach is based on two
vertically stacked phase matched core layers. The effect of bus waveguide,
coupling region and ring structure parameters is theoretically analyzed.
Numerical calculations predict high performance devices with quality
factors of over 10000. The scheme can feature both active and passive
regions, allowing the fabrication of microring lasers.
(Optical Society of America, 2013) García López, Óscar; Lasaosa Medarde, Daniel; López-Amo Sáinz, Manuel; Galarza Galarza, Marko; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
A new active-passive monolithic integration approach for
photonic components based on vertical evanescent coupling is presented.
Two vertically stacked waveguides are used in order to provide full
resonant power transfer between them and avoiding the need of tapered
structures. Light confinement in each waveguide is achieved combining
strong lateral asymmetric structures and bent waveguides, both defined
during lithography. Low propagation losses for the active waveguide and
coupling efficiencies to the passive section as high as 97% have been
obtained.
