Date of Award
Master of Science in Electrical Engineering - (M.S.)
Electrical and Computer Engineering
John Charles Hensel
Eugene I. Gordon
A conditional artificial dielectric with embeddings of either CdS, GaAs or Si in PMMA form the dielectric material of a microstrip in a homodyne microwave detection system. The system consists of a Michelson or Mach-Zehnder interferometers with the microstrip placed in one arm. The index of refraction of the microstrip substrate is modulated by chopped incident light causing amplitude and phase variations in the incoming RF signal. Those variations are detected by mixing the light modulated microwave carrier(information channel) with the unmodulated carrier (reference channel) in the interferometer. The output is sensed by the square law detector and a lock-in amplifier synchronized with the light modulating frequency.
Jimenez, J. Manuel, "Conditional artificial dielectric : optically controlled microwave modulator" (1992). Theses. 2291.