IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, …

ieee TRANSACTIONS ON APPLIED superconductivity , VOL. 19, NO. 4, AUGUST 20093653A Superconductor THz Modulator Basedon Vortex Flux FlowFarrokh Sarreshtedari, Mehdi Hosseini, Hamid Reza Chalabi, Ali Moftakharzadeh, Hesam Zandi,Sina Khorasani, Member, ieee , and Mehdi Fardmanesh, Senior Member, IEEEA bstract A terahertz modulator based on the Type-II super-conductor flux flow oscillator has been proposed. Analytical calcu-lations are presented and the effects of intrinsic and extrinsic pa-rameters such as disorder strength of crystal, penetration depth,frequency, and amplitude of the modulated current on the radi-ation power spectrum have been studied. The proposed structurealso exhibits a mixer-like behavior, in the sense that its output har-monics range from the washboard frequency up to the supercon-ductor gap frequency, so the input signal is practically mixed withthe washboard frequency and its harmonics. The modulation indexfor each harmonic of this modulator has also been well-featured modulator has a potential to be used in next-generation terahertz integrated Terms Mixer, modulator, superconducting devices,vortex flux INTRODUCTIONSPECTRUM of electromagnetic radiation from a type-IIflux flow oscillator (FFO) has been derived previously byBulaevskii and Chudnovsky [1].

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL. 19, NO. 4, AUGUST 2009 3653 A Superconductor THz Modulator Based on Vortex Flux Flow Farrokh Sarreshtedari, Mehdi Hosseini, Hamid Reza Chalabi, Ali Moftakharzadeh, Hesam Zandi,

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  Transactions, Applied, Ieee, Superconductivity, Ieee transactions on applied superconductivity

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