In this work, the contribution of organic-inorganic hybrids (di-ureasils) as integrated optics substrates for thermo-optical actuated devices is revisited. The hybrids are UV self-patterned without the need of photoinitiators and have a large thermo-optic coefficient, enabling the fabrication of IO devices using direct-UV lased writing. Examples include thermal actuated Mach-Zehnder (MZ) interferometers and tunable waveguide polarization controllers with for the new generation of optical communications.