Title :
Subpicosecond pulse propagation on coplanar waveguides: experiment and simulation
Author :
Gupta, S. ; Whitaker, J.F. ; Mourou, G.A.
Author_Institution :
Ultrafast Sci. Lab., Michigan Univ., Ann Arbor, MI, USA
fDate :
7/1/1991 12:00:00 AM
Abstract :
Experimental results are presented concerning subpicosecond pulse propagation on normal metal, coplanar transmission line structures. The pulse distortion that occurs is modeled using a semiempirical curve fit to the full-wave analysis for the modal dispersion and quasi-static approximations for the conductor and radiation loss. Without using any adjustable parameters, very good agreement is obtained for the delay, rise time, and amplitude of the pulse for various propagation distances. For terahertz-bandwidth pulses on lines similar to the one studied, the modal dispersion and radiation losses are the dominant pulse-shaping mechanisms.<>
Keywords :
delays; dispersion (wave); guided electromagnetic wave propagation; waveguide theory; waveguides; CPW; conductor loss; coplanar waveguides; delay; full-wave analysis; metal transmission line structures; modal dispersion; pulse amplitude; pulse distortion; pulse-shaping mechanisms; quasi-static approximations; radiation loss; rise time; simulation; subpicosecond pulse propagation; terahertz-bandwidth pulses; Attenuation; Conductors; Coplanar transmission lines; Coplanar waveguides; Delay effects; Dielectric losses; Dielectric substrates; Gallium arsenide; Optical pulses; Pulse shaping methods;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
