Group delay ripples less than 3 ps in amplitude were measured in chirped fiber Bragg gratings used as gain flattening filters. The delay ripples of cascaded filters increase as the square root of their number.

We consider relativistic deformations of interfering paraxial waves moving in the transverse direction. Owing to superluminal transverse phase velocities, noticeable deformations of the interference patterns arise when the waves move with respect to each other with non-relativistic velocities. Similar distortions also appear on a mutual tilt of the interfering waves, which causes a phase delay ...

In this paper methods to determine the group delay of vented boxes and techniques for the design of filters for group delay equalization are presented. First the transfer function and the related group delay are explained. Then it is shown how the group delay can be computed or approximated for a certain alignment of the box. Furthermore it is shown how to derive the required parameters of the ...

In this paper, a novel design of CPW-Fed defected substrate microstrip antenna is presented. The proposed antenna shows wideband applications by choosing suitable defected crown shape substrate. Defected shape substrate also reduces the size of the antenna. The radiating patch of proposed antenna is taken in the form of extended U-shape. The space around the radiator is utilized by extending th...