Title :
An inter-subband device with terahertz applications
Author :
Buckle, Philip D. ; Dawson, Philip ; Lynch, Mark A. ; Kuo, Chun-Yi ; Missous, Mohammed ; Truscott, William S.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
fDate :
4/1/2000 12:00:00 AM
Abstract :
A theoretical analysis of a modulator based on two coupled resonators is presented in this paper. This modulator exhibits a resonant enhancement in its response. It is used as a component of tunneling structures designed for operation at terahertz frequencies; unlike conventional resonant tunneling structures, these use triple barriers. Data from optical and electrical measurements on a series of devices based on one design of a triple-barrier tunneling structure have been analyzed to estimate their behavior at frequencies over 1 THz. The analysis gives values for the resonantly enhanced admittance, its bandwidth, the bias-frequency relationship, and the requirements for a matching circuit to a 50-Ω environment. The results show that one existing structure might be used in oscillators working at 1 THz
Keywords :
resonant tunnelling devices; submillimetre wave oscillators; 1 THz; inter-subband device; resonant modulator; resonant tunneling; terahertz oscillator; triple barrier structure; Electric variables measurement; Frequency estimation; Frequency measurement; Optical design; Optical devices; Optical modulation; Optical resonators; Resonance; Resonant frequency; Resonant tunneling devices;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
