Numerical Aperture

Views Updated: Dec 15, 2025

Abbreviation

Pronunciation

/nuˈmɛrɪkəl ˈæpərʧər/

Transmission parameters such as numerical aperture and normalized frequency of the fabricated holey fibers have been measured and compared with theoretical values based on effective index method.
A new method for measurement of numerical aperture of photonic crystal fibers
This is achieved by a high numerical aperture ( NA ) lens axicon that utilizes spherical aberration to duplicate the performance of an axicon and to create an extended focal line.
We study the high numerical aperture focusing properties and typical applications of axially-symmetric polarized beams ( ASPBs ) with high polarization orders.
Hence the value of high numerical aperture for such specimens.

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