Glossary
- Lambertian light source: light source with a constant radiance (or luminance) whichever the direction
- Multimode fiber optic: fiber optic enabling the propagation of several transverse modes
- Core: central part of a fiber optic in which lightwaves are guided
- Fiber optic: long cylindrical optical component guiding light
- Numerical aperture ( fiber optics ): dimensionless number characterizing the acceptance cone angle of an optical fiber
- Radiance ( radiometry ): for a light source or a diffusing/reflecting surface, power emitted per unit of solid angle and per unit of apparent area
- Coupling efficiency ( fiber optics ): ratio between the optical power emitted by a source and the optical power effectively injected in a fiber optics