This problem can be minimized by carefully choosing combinations of: 1) the dispersion n(f) of the glass, 2) the permittivity contour ε(r) in the fiber, and 3) the optical center frequency f o . Other...This problem can be minimized by carefully choosing combinations of: 1) the dispersion n(f) of the glass, 2) the permittivity contour ε(r) in the fiber, and 3) the optical center frequency f o . Otherwise we must reduce either the bandwidth of the signal or the length of the fiber.
Generically, a “waveguide” is a device that forces a traveling wave to propagate only where you want it to go. Typically, a waveguide is some kind of tube that allows the wave disturbance to propagate...Generically, a “waveguide” is a device that forces a traveling wave to propagate only where you want it to go. Typically, a waveguide is some kind of tube that allows the wave disturbance to propagate in one direction while confining it in the other directions. In this section, we will discuss the case of straight wave guides with simple uniform cross sections. The really interesting physics occurs when the width of the waveguide is not much larger than the wavelength of the wave.
