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IEVref: | 731-03-63 | ID: | |

Language: | en | Status: Standard | |

Term: | normalized frequency | ||

Synonym1: | <i>V</i> number [Preferred] | ||

Synonym2: | |||

Synonym3: | |||

Symbol: | V
| ||

Definition: | in an optical fibre a dimensionless quantity, denoted by V, given by$V=\frac{2\pi a}{\lambda}{\left({n}_{1}^{2}-{n}_{2}^{2}\right)}^{1/2}$
where: | ||

Publication date: | 1991-10 | ||

Source: | |||

Replaces: | |||

Internal notes: | 2016-01-25: Spelling of "normalised" (3 hits) harmonized to "normalized" (15 hits). JGO 2017-06-02: Cleanup - Remove Attached Image 731-03-63.gif | ||

CO remarks: | |||

TC/SC remarks: | |||

VT remarks: | |||

Domain1: | |||

Domain2: | |||

Domain3: | |||

Domain4: | |||

Domain5: |

$V=\frac{2\pi a}{\lambda}{\left({n}_{1}^{2}-{n}_{2}^{2}\right)}^{1/2}$

where:

*a* is the fibre core radius,

*λ* is wavelength in vacuum, and

*n*_{1} and *n*_{2} are the maximum refractive index in the core and refractive index of the innermost homogenous cladding, respectively