Optical bistablility and thermo-optic response of integrated high index
doped silica ring resonators
Abstract
The utilization and engineering of thermo-optic effects have found broad
applications in integrated photonic devices, facilitating efficient
light manipulation to achieve various functionalities. Here, we perform
both an experimental characterization and theoretical analysis of these
effects in integrated micro-ring resonators made from high index doped
silica (HIDS), which have had many applications in integrated photonics
and nonlinear optics. By fitting the experimental results with theory,
we obtain fundamental parameters that characterize their thermo-optic
performance, including the thermo-optic coefficient, the efficiency for
the optically induced thermo-optic process, and the thermal
conductivity. The characteristics of these parameters are compared to
those of other materials commonly used for integrated photonic
platforms, such as silicon, silicon nitride, and silica. These results
offer a comprehensive insight into the thermo-optic properties of HIDS
based devices. Understanding these properties is essential for
efficiently controlling and engineering them in many practical
applications.