Athermalization of resonant optical devices via thermo-mechanical feedback

摘要

A passively athermal photonic system including a photonic circuit having a substrate and an optical cavity defined on the substrate, and passive temperature-responsive provisions for inducing strain in the optical cavity of the photonic circuit to compensate for a thermo-optic effect resulting from a temperature change in the optical cavity of the photonic circuit. Also disclosed is a method of passively compensating for a temperature dependent thermo-optic effect resulting on an optical cavity of a photonic circuit including the step of passively inducing strain in the optical cavity as a function of a temperature change of the optical cavity thereby producing an elasto-optic effect in the optical cavity to compensate for the thermo-optic effect resulting on an optical cavity due to the temperature change.

主权项

1. A passively athermal photonic system comprising:
a photonic circuit including at least one optical cavity, said cavity comprising a ring resonator, defined on a substrate; a passive temperature-responsive structure mechanically coupled for inducing strain in the optical cavity of the photonic circuit by bending the substrate to compensate for a thermo-optic effect resulting from a temperature change in the optical cavity of the photonic circuit; and wherein the passive temperature responsive structure includes a post that is positioned against the substrate such that the post creates a cantilever load on the substrate.