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IEVref: | 731-02-22 | ID: | |

Language: | en | Status: Standard | |

Term: | core area | ||

Synonym1: | |||

Synonym2: | |||

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Definition: | for a cross section of an optical fibre the area within which the refractive index everywhere (excluding any index dip) exceeds that of the innermost homogeneous cladding by a given fraction of the difference between the maximum of the refractive index of the core and the refractive index of the innermost homogenous cladding
NOTE – The core area is the smallest cross-sectional area of a fibre excluding any index dip, which is contained within the locus of points where the refractive index
where : | ||

Publication date: | 1991-10 | ||

Source: | |||

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CO remarks: | |||

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VT remarks: | |||

Domain1: | |||

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Domain5: |

*n*_{3} = *n*_{2} + k (*n*_{1} – *n*_{2})

where :

*n*_{1} is maximum refractive index of the core,

*n*_{2} is refractive index of the innermost homogeneous cladding,

k is a constant (usually taken to be in the range 0 – 0.05).