|
|
|
|
|
Radiation ModeFor an optical fiber, Radiation mode, or unbound mode, is an unbound mode. In an optical fiber, a radiation mode is one having fields that are transversely oscillatory everywhere external to the waveguide, and which exists even at the limit of zero wavelength. Specifically, a radiation mode is one for which where β is the imaginary part (phase term) of the axial propagation constant, integer l is the azimuthal index of the mode, n (a) is the refractive index, where a is the core radius, and k is the free-space wave number, k = 2π/λ, where λ is the wavelength. Radiation modes correspond to refracted rays in the terminology of geometric optics. Source: from Federal Standard 1037C and from MIL-STD-188
|
 |
|
| Copyright 2005-2009 OnPedia.com. All Rights Reserved |
|
|