%0 Journal Article %T Quadrature amplitude modulation frequency up- and down-conversions using a positive-intrinsic-negative photodiode sampling mixer %+ École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne) %+ Equipe Security, Intelligence and Integrity of Information (Lab-STICC_SI3) %A Termos, Hassan %A Mansour, Ali %< avec comité de lecture %@ 0091-3286 %J Optical Engineering %I SPIE %V 61 %N 09 %8 2022-09-01 %D 2022 %R 10.1117/1.OE.61.9.096103 %K Bias voltage %K Mixing %K Quadrature amplitude modulation %K Quadrature phase shift keying %K Radio-over-fiber %Z Engineering Sciences [physics]/Signal and Image processingJournal articles %X Simulation and experimental performance analysis of a positive-intrinsic-negative photodiode (PIN-PD) sampling mixer used as frequency up and down-converters are presented. Besides, a frequency mixing with a PIN-PD can operate in a frequency range up to 47.3 GHz for up-conversion and 38.5 GHz for down-conversion. The design and operating regime peculiarities of a PIN-PD as an up and down-converter in a radio over fiber (RoF) system are also discussed. The conversion gain of a PIN-PD sampling mixer is simulated and measured. We showed that the gain may decrease from 27 dB at a mixing frequency of 8.3 GHz to 3 dB at the one with 47.3 GHz in an up-conversion mode and from 26.5 dB at 31.7 GHz to 7 dB at 38.5 GHz in a down-conversion mode, when the PIN-PD bias voltage was 0 V. The conversion gain degrades with the decrease of the bias voltage from 0 to −5 V. Error vector magnitudes (EVMs) of the quadratic amplitude modulation (M-QAM) up and down-converted signals are investigated. Quadrature phase shift keying (QPSK) data at bit rates between 312.5 Mbit∕s and 5 Gbit∕s are frequency-converted. The EVM is used a performance index to assess the mixing system. Exploitable EVMs in the range of 15% up to 34.9% are reached for up-conversion of the mixing frequency. For down-conversion, the EVM varies from 20% to 34.9% at 5 Gbit∕s over the whole frequency range. The EVM of mixed signals is improved with 16-QAM and 64-QAM modulations. %G English %L hal-04090587 %U https://ensta-bretagne.hal.science/hal-04090587 %~ UNIV-BREST %~ INSTITUT-TELECOM %~ ENSTA-BRETAGNE %~ CNRS %~ UNIV-UBS %~ ENSTA-BRETAGNE-STIC %~ ENIB %~ LAB-STICC %~ INSTITUTS-TELECOM %~ LAB-STICC_SI3 %~ LAB-STICC_T2I3