In
fiber optics
An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means t ...
, mode volume is the number of bound
modes
Mode ( la, modus meaning "manner, tune, measure, due measure, rhythm, melody") may refer to:
Arts and entertainment
* '' MO''D''E (magazine)'', a defunct U.S. women's fashion magazine
* ''Mode'' magazine, a fictional fashion magazine which is ...
that an
optical fiber
An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass ( silica) or plastic to a diameter slightly thicker than that of a human hair
Hair is a protein filament that grows ...
is capable of supporting.
The mode volume ''M'' is approximately given by
and
, respectively for
step-index and
power-law index profile fibers, where ''g'' is the profile parameter, and ''V'' is the
normalized frequency, ''which must be greater than 5 for this approximation to be valid''.
See also
*
Equilibrium mode distribution
The equilibrium mode owerdistribution of light travelling in an optical waveguide or fiber, is the distribution of light that is no longer changing with fibre length or with input modal excitation. This phenomenon requires both mode filtering and ...
*
Mode scrambler
*
Mandrel wrapping
References
*
Fiber optics
{{optics-stub