Abstract
The Sellmeier equation, ubiquitous in optics for characterizing an optical material's refractive index (n) as a function of wavelength (λ), is recast as an electrical immittance and realized in a circuit form. The circuit is shown to be identical to that widely used to portray piezoelectric resonators. This analogy further is shown to harmonize certain features common to both as well as to connect seemingly disparate applied physical phenomena including Lyddane–Sachs–Teller, Debye, Drude, plasma, and Lorentz–Zener effects.
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