Instead , it must be analyzed as an electromagnetic structure , by solution of Maxwell 's equations as reduced to the electromagnetic wave equation .
Fiber with a core diameter less than about ten times the wavelength of the propagating light can not be modeled using geometric optics .
It must be analyzed as an electromagnetic structure , by solution of Maxwell 's equations as reduced to the electromagnetic wave equation .
Fiber with a core diameter less than about ten times the wavelength of the propagating light can not be modeled using geometric optics .