The shape of the solid light distribution in the fibre with a spherical output surface

Abstract

We have discussed transmission of the luminous flux through the optical fibre with a flat input surface and a spherical output surface. In this discussion we have considered the basic losses of the luminous flux.: Fresnel reflections, absorption of the core material on the optical path, and imperfections of the internal reflection. The curves of luminous intensity of the solids of light distribution in the optical fibre mating with a halogen bulb have been given as well.

Replacement of glass-former B2O3 by GeO2 in amorphous host evidenced by optical methods

“…They were characterized by using various spectroscopic techniques. These phenomena are important in relation to practical applications in photonic devices and such glass systems can be successfully used, among others, for up-conversion luminescence systems [7] or optical fibers [8][9][10] …”

“…They were characterized by using various spectroscopic techniques. These phenomena are important in relation to practical applications in photonic devices and such glass systems can be successfully used, among others, for up-conversion luminescence systems [7] or optical fibers [8][9][10]. Further investigations indicate that the replacement of glass-modifier PbO by PbF 2 in germanate [11] and borate [12] glasses modify the glass-host structure and influence significantly the optical properties of rare earths.…”

Rare earth doped lead-free germanate glasses for modern photonics

“…Rare Inorganic glasses are well known as promising materials in modern photonics [1]. Due to their unique thermal and spectroscopic properties, they are widely used in the field of solid-state laser [2] and optical fibres [3][4][5] technologies. Trivalent rare earths, as optically active ions, are incorporated into glass host matrices for upconversion luminescence [6] and fibre amplifiers [7].…”