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A Superconductor THz Modulator Based on Vortex Flux Flow

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7 Author(s)
Sarreshtedari, F. ; Superconductive Electron. Res. Lab., Sharif Univ. of Technol., Tehran, Iran ; Hosseini, M. ; Chalabi, H.R. ; Moftakharzadeh, A.
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A terahertz modulator based on the Type-II superconductor flux flow oscillator has been proposed. Analytical calculations are presented and the effects of intrinsic and extrinsic parameters such as disorder strength of crystal, penetration depth, frequency, and amplitude of the modulated current on the radiation power spectrum have been studied. The proposed structure also exhibits a mixer-like behavior, in the sense that its output harmonics range from the washboard frequency up to the superconductor gap frequency, so the input signal is practically mixed with the washboard frequency and its harmonics. The modulation index for each harmonic of this modulator has also been investigated. This well-featured modulator has a potential to be used in next-generation terahertz integrated transceivers.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:19 ,  Issue: 4 )

Date of Publication:

Aug. 2009

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