Sellmeier dispersion formula

A dispersion formula is a mathematical function which expresses a physical property s dependence on the optical frequencies used to measure it. The prototype is the Sellmeier dispersion formula for the polarizability a and which can be written as ... 

The refractive indices (RI) for transverse electric field (TE) mode were measured using the m-line method at the wavelengths of 632.8 and 830 nm. Wavelength dispersion of RI, was fitted to a one-oscillator Sellmeier-dispersion formula,... 

Glass type Refractive index d Abbe value Vd ve Constants of the Sellmeier dispersion formula h II Cj... 

In 10 there a great variety of materials is used, and their optical constants may be affected e.g. by film deposition technologies. What is thus required is the access to data for material dispersion with relation to technological parameter as well, either as Sellmeier or related formula, or as tabulated values. Additionally, refractive indices respond to temperature, which may be intended for device operation in case of a TO-switch, or unintended in field use. The temperature dependence of the refractive index can be attributed to the individual material, simply, but the influence of heater electrodes needs special consideration. If an 10 design-tool comes with inherent TO or EO capabilities, those effects are taken into account in the optical design directly. 

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