In this study, we have generated terahertz (THz) frequency by a novel design of
microring resonators for medical applications. The dense wavelength-division multiplexing can
be generated and obtained by using a Gaussian pulse propagating within a modified PANDA
ring resonator and an add/drop filter system. Our results show that the THz frequency region
can be obtained between 40–50 THz. This area of frequency provides a reliable frequency band
for THz pulsed imaging
