RF Frequency Response of Photoconductive Samplers

Roux, Jean‐François; Delord, J.-M.; Coutaz, Jean‐Louis

doi:10.1109/jqe.2010.2077672

Cited by 10 publications

(6 citation statements)

References 14 publications

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“…The RF output signal of the PSW is characterized with a spectrum analyzer (Anritsu MS2667C of 30 GHz bandwidth). As shown in [5] when excited by an RF signal of frequency F RF , the illuminated PSW delivers a train of electrical pulses at the repetition rate F laser , which amplitude depends on the amplitude of the RF signal, the optical power and the conversion efficiency of the switch. In the frequency domain, the electrical output consists in a Dirac-comb centred on the RF angular frequency F RF with peaks separated by the frequency F laser of the laser pulses train:…”

Section: Photoconductive Sampling Of Rf Signalsmentioning

confidence: 99%

“…For that it has been shown that simple Metal-Semiconductor-Metal (MSM) photoswitches (PSW) made from Low-Temperature-Grown (LTG) GaAs could reach these requirements. Hence, this component has been used as ultrafast optoelectronic sampler for ADC [4,5] and mixer showing applications in the RF band as well as in the THz one [6,7]. Its principle rely on the increase of the electrical conductance of the semiconductor through absorption of the optical beam, making this device an optically controlled resistance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrafast InGaAs photoswitch for RF signal processing

Horváth

Roux

Coutaz

et al. 2017

2017 International Conference on Optical Network Design and Modeling (ONDM)

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Optical processing of RF signals is demonstrated in this communication using photoswitches made from Nitrogen Implanted InGaAs. The sampling device shows an ultrafast picosecond response time while activated by ultra-short optical pulses or modulated optical beam centered at the wavelength of 1.55 µm. The optoelectronic device is embedded in a microwave coplanar waveguide which has a high electrical bandwidth allowing to process signals in the 1-67 GHz band. We investigate the potentiality of this component to be used either in photonic assisted sampling for future Analog to Digital Converters or in photonic assisted heterodyne detection of RF modulated carriers.

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Section: Photoconductive Sampling Of Rf Signalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrafast InGaAs photoswitch for RF signal processing

Horváth

Roux

Coutaz

et al. 2017

2017 International Conference on Optical Network Design and Modeling (ONDM)

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“…The characteristics of the PIN-PD make it suitable for use in switches [2], modulators [3], phase shifters [4], signal mixers [5], sensors [6], and other signal-control circuits [7]. Switching applications of PIN-PDs, such as antenna-array switching and optically triggered sampling circuits for photonics analog-to-digital converters, are important when optically triggered switches are used for multigigabit-per-second radio-frequency (RF) sampling [8,9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a high-speed radio-frequency sampling and demultiplexing circuit based on the cascade connection of pin photodiodes

Angulo¹,

Hernandez-Fuentes²,

Morales-Carbajal³

et al. 2019

Turk J Elec Eng & Comp Sci

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Herein, we apply theoretical models to characterize the transfer function and frequency response of a complex optoelectronic circuit that comprises a primary ultrafast sampling circuit followed by a cascade connection of N demultiplexing stages. The successive radio-frequency optoelectronic samplers were based on the cascade connection of positive-intrinsic-negative-photodiodes (PIN-PDs). We developed a procedure to calculate the principal design parameters that allows us to use optical power for each sampling and demultiplexing stage, such that the circuit can be designed based on the application requirements. The results obtained from the theoretical models were compared with the measurements obtained from the 2.5 GS/s sampling circuit connected in cascade with a 1.25 GS/s and a 625 MS/s demultiplexing circuit implemented using commercial PIN-PDs

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“…Among the most recent works, we can cite those performed on the use of a photoswitch based on low temperature GaAs (LT-GaAs) for the sampling function [15,16]. Or more recently for the fast sampling [17][18][19][20][21]. This paper contains five parts, the second part explains the operating principle of the proposed photoswitch.…”

Section: Introductionmentioning

confidence: 99%