Vol. 33, Issue 1, pp. 205-212
Keywords
optical fibres, radiative transfer, photometry, luminous flux
Abstract
A method for calculation of luminous flux emitted by the front surface of a fibre was proposed. A step-index fibre was considered. Calculations were based upon known electromagnetic field distribution inside the core represented by analytical equations. Particular modes were shown as the superposition of linear polarized plane waves. Light refraction on the fibre front surface was also taken into consideration. It was found that spatial distribution of the luminous flux of a particular fibre depended on its normalized frequency.