A system for stabilizing the temperature sensitivity in photonic circuits comprising a thermoelastic cladding directly overlaid on a photonic circuit, wherein the properties of the thermoelastic cladding are such that the temperature of the photonic circuit is passively stabilized, such as by adjustment of the effective refractive index of the photonic circuit. The thermoelastic cladding may comprise a negative thermo-optic coefficient and the photonic circuit has a positive thermo-elastic coefficient. The thermoelastic cladding may be a liquid, solid, or gas, and may be contained within a chamber having an inlet and an outlet. A pressure sensor may be contained within the chamber for monitoring pressure. The sensor can detect whether the fluid/gas has reached its maximum expansion and can send a signal when that happens. The pressure sensor is connected in a feedback loop and it sends an alarm once the chamber pressure is at a maximum.