The thermo-optic coefficient is a parameter that quantifies the change in the refractive index of a material with respect to temperature. It is typically denoted as \(dn/dT\), where \(n\) is the refractive index and \(T\) is the temperature. This coefficient is crucial in applications where temperature variations can affect the optical properties of materials, such as in fiber optics, photonics, and various optical devices.
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