Optical fiber core
= Optical fiber core
The central guiding region of a conventional <optical fiber>; in a <step-index optical fiber>, its <refractive index> exceeds that of the surrounding <optical fiber cladding>.
= Optical fiber core
The central guiding region of a conventional <optical fiber>; in a <step-index optical fiber>, its <refractive index> exceeds that of the surrounding <optical fiber cladding>.