| attenuation coefficient |
(Also called extinction coefficient, especially in reference to optical frequencies.) For radiation propagating through a medium, the fractional depletion of radiance per unit pathlength, or in radar usage, of the power density of plane-wave radiation per unit pathlength. The attenuation coefficient is defined through Bouguer's law as where L is the monochromatic radiance at a given wavelength, is the attenuation coefficient, and ds is a differential increment of pathlength. ...
출처: amsglossary.allenpress.com/glossary/browse
|
|---|---|
| attenuation coefficient |
A factor expressing optical power loss per unit of length, expressed in dB/Km.
출처: logicalpackets.com/Network%20Learning/fiber_optic_...
|
| attenuation coefficient |
The rate of optical power loss with respect to distance along the fiber, usually measured in decibels per kilometer (dB/km) at a specific wavelength; the lower the number, the better the fiber's attenuation. Typical multimode wavelengths are 850 and 1300 nanometers (nm); single-mode wavelengths are 1310 and 1550 nm. Note: When specifying attenuation, it is important to note whether the value is average or nominal.
출처: www.corningcablesystems.com/web/news/dsprgall.nsf/...
|