WebThe Collection Effectiveness Index, or CEI, is a calculation of a company’s ability to retrieve their AR from their customers. In other words, CEI compares the amount that was collected in a given time period to the amount of receivables that were available for collection. A CEI near 80% or above indicates a highly effective collections ... WebJan 8, 2024 · 1. I'm currently trying to calculate the effective refractive index n e f f of waveguides using the (measured) group index n g and the wavelength λ. I started with the relation between n e f f and n g: n g = n e f f ( λ) − λ ⋅ ( d d λ n e f f ( λ)). Here I am stuck - if I know n g and the wavelength λ, can I use the above relationship ...
Group Index - RP Photonics
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optics - Effective Refractive Index - Physics Stack Exchange
WebThe refractive index of a material depends on the optical frequency or wavelength; this dependency is called chromatic dispersion.Typical refractive index values for glasses and crystals (e.g. laser crystals) in the visible spectral region are in the range from 1.4 to 2.8, and typically the refractive index increases for shorter wavelengths (normal dispersion). WebTable 8.2 from [4] shows the characteristics of a four-LP mode fiber at 1550 nm. The effective index difference is 0.8 × 10 −3 between LP 21 and LP 02 modes and larger than 2 × 10 −3 between the remaining LP modes. The effective areas of the four LP modes are very similar, ranging from 118 μm 2 to 133 μm 2. WebMay 19, 2016 · The Collection Effectiveness Index Formula. The formula consists of the sum of beginning receivables and monthly credit sales, less ending total receivables.Then, divide that by the sum of beginning receivables and monthly credit sales, less ending current receivables.The value is then multiplied by 100 to get a percentage, and if a CEI … shane movie theme song