Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Anuar De Jesus Fernandez Olvera"'
Publikováno v:
IEEE Access, Vol 10, Pp 42061-42068 (2022)
We present an ultra-broadband and inexpensive photonic spectrum analyzer (PSA) for wireless signals with a frequency coverage from the microwave range till deep into the terahertz range. The difference frequency of two continuous-wave laser diodes wo
Externí odkaz:
https://doaj.org/article/3bc44ab4185b468d90408499fb1f9d64
Autor:
Anuar de Jesus Fernandez Olvera, Benedikt Leander Krause, Andres Betancur-Perez, Uttam Nandi, Cristina de Dios, Pablo Acedo, Sascha Preu
Publikováno v:
IEEE Access, Vol 9, Pp 95391-95400 (2021)
We introduce a new scheme for the detection of terahertz pulses based on the frequency selective optoelectronic downconversion of its individual modes with a continous-wave (CW) ErAs:InGaAs photoconductive antenna (PCA) driven by a comb-based CW phot
Externí odkaz:
https://doaj.org/article/2cd3714de3ff426abcdcdb1debbea081
Publikováno v:
IEEE Access, Vol 9, Pp 114339-114347 (2021)
We present an architecture for millimeter-wave spectrum analyzers with Hz resolution and precision based on heterodyne down-conversion using ErAs:InGaAs photoconductive mixers driven by a tunable ultra-narrow linewidth continuous-wave (CW) photonic l
Externí odkaz:
https://doaj.org/article/dcac4374c2d74b39827f9106968771e1
Autor:
Anuar de Jesus Fernandez Olvera, Axel Roggenbuck, Katja Dutzi, Nico Vieweg, Hong Lu, Arthur C. Gossard, Sascha Preu
Publikováno v:
Photonics, Vol 6, Iss 1, p 15 (2019)
A theoretical model for the responsivity and noise-equivalent power (NEP) of photoconductive antennas (PCAs) as coherent, homodyne THz detectors is presented. The model is validated by comparison to experimental values obtained for two ErAs:InGaAs PC
Externí odkaz:
https://doaj.org/article/9a640641fcaf4ac0b63f14b7411a7aff
Publikováno v:
Dissertation
This thesis demonstrates two application-oriented terahertz (0.1-10 THz) systems developed with ErAs:In(Al)GaAs photoconductors, and introduces new models to describe their performance as terahertz detectors. ErAs:In(Al)GaAs photoconductors, and phot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3cc103bd351840585669cbe885b65de4
http://tuprints.ulb.tu-darmstadt.de/21340/
http://tuprints.ulb.tu-darmstadt.de/21340/
Autor:
Sascha Preu, Alonso Ingar Romero, Anuar de Jesus Fernandez Olvera, Amlan K. Mukherjee, Mario Mendez Aller
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications
Nature Communications
The resolution along the propagation direction of far field imagers can be much smaller than the wavelength by exploiting coherent interference phenomena. We demonstrate a height profile precision as low as 31 nm using wavelengths between 0.375 mm an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6b0fb7943643d80f31d60a16bbbc1e4
https://doi.org/10.21203/rs.3.rs-244675/v1
https://doi.org/10.21203/rs.3.rs-244675/v1
Autor:
Chigo Okonkwo, Tom K. Johansen, Vitaliy Zhurbenko, Yunfeng Dong, Mario Mendez Aller, Alvaro Morales, Idelfonso Tafur Monroy, Sascha Preu, Peter Jesper Hanberg, Anuar de Jesus Fernandez Olvera
Publikováno v:
IEEE Transactions on Components, Packaging and Manufacturing Technology, 9(8), 1486-1494. IEEE/LEOS
Dong, Y, Olvera, A D J F, Morales, A, Aller, M M, Preu, S, Zhurbenko, V, Hanberg, P J, Okonkwo, C, Tafur Monroy, I & Johansen, T K 2019, ' System Integration and Packaging of a Terahertz Photodetector at W-Band ', IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 9, no. 8, pp. 1486-1494 . https://doi.org/10.1109/TCPMT.2019.2928053
IEEE Transactions on Components, Packaging and Manufacturing Technology
Dong, Y, Olvera, A D J F, Morales, A, Aller, M M, Preu, S, Zhurbenko, V, Hanberg, P J, Okonkwo, C, Tafur Monroy, I & Johansen, T K 2019, ' System Integration and Packaging of a Terahertz Photodetector at W-Band ', IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 9, no. 8, pp. 1486-1494 . https://doi.org/10.1109/TCPMT.2019.2928053
IEEE Transactions on Components, Packaging and Manufacturing Technology
This paper presents the system integration and packaging of a photodetector at $W$ -band (75–110 GHz) for terahertz (THz) communications. The ErAs:In(Al)GaAs photoconductor and its feeding network based on semi-insulating indium phosphide (InP) sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab277432ad7c9ad5d4b0c807e797df80
https://research.tue.nl/nl/publications/f3c768b9-1ecc-42de-b736-a8c853baca2a
https://research.tue.nl/nl/publications/f3c768b9-1ecc-42de-b736-a8c853baca2a
Autor:
Sascha Preu, Alvaro Morales, Idelfonso Tafur Monroy, Yunfeng Dong, Chigo Okonkwo, Simon Rommel, Dimitrios Konstantiouv, Tom K. Johansen, Anuar de Jesus Fernandez Olvera
Publikováno v:
2019 21st International Conference on Transparent Optical Networks (ICTON)
Olvera, A D J F, Morales-Vicente, Á, Dong, Y, Konstantiou, D, Rommel, S, Johansen, T K, Okonkwo, C, Tafur Monroy, I & Preu, S 2019, W-Band Heterodyne Wireless System with 2.3 GHz Intermediate Frequency Driven Entirely by ErAs:In(Al)GaAs Photoconductors . in Proceedings of 21st International Conference on Transparent Optical Networks . IEEE, 21st International Conference on Transparent Optical Networks, Angers, France, 09/07/2019 .
ICTON
21st International Conference on Transparent Optical Networks, ICTON 2019
Technical University of Denmark Orbit
Olvera, A D J F, Morales-Vicente, Á, Dong, Y, Konstantiou, D, Rommel, S, Johansen, T K, Okonkwo, C, Tafur Monroy, I & Preu, S 2019, W-Band Heterodyne Wireless System with 2.3 GHz Intermediate Frequency Driven Entirely by ErAs:In(Al)GaAs Photoconductors . in Proceedings of 21st International Conference on Transparent Optical Networks . IEEE, 21st International Conference on Transparent Optical Networks, Angers, France, 09/07/2019 .
ICTON
21st International Conference on Transparent Optical Networks, ICTON 2019
Technical University of Denmark Orbit
We demonstrate a heterodyne wireless system using only ErAs:In(Al)GaAs photoconductors driven by two independent telecom laser signals. The maximum Intermediate Frequency (IF) was 2.3 GHz, only limited by the bandwidth of the post-detection electroni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7c4eecb6fe98dd4a48456a0374347af
Autor:
Sascha Preu, Hong Lu, Nico Vieweg, Katja Dutzi, Axel Roggenbuck, Anuar de Jesus Fernandez Olvera, Arthur C. Gossard
Publikováno v:
Photonics, Vol 6, Iss 1, p 15 (2019)
Photonics
Volume 6
Issue 1
Photonics
Volume 6
Issue 1
A theoretical model for the responsivity and noise-equivalent power (NEP) of photoconductive antennas (PCAs) as coherent, homodyne THz detectors is presented. The model is validated by comparison to experimental values obtained for two ErAs:InGaAs PC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0148602276fb8b399ca97e71e824e8c5
https://doi.org/10.3390/photonics6010015
https://doi.org/10.3390/photonics6010015
Autor:
Ping-Keng Lu, Anuar de Jesus Fernandez Olvera, Deniz Turan, Tom Sebastian Seifert, Nezih Tolga Yardimci, Tobias Kampfrath, Sascha Preu, Mona Jarrahi
Publikováno v:
Nanophotonics
Efficient terahertz generation and detection are a key prerequisite for high performance terahertz systems. Major advancements in realizing efficient terahertz emitters and detectors were enabled through photonics-driven semiconductor devices, thanks
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d3c5fa7fe4966e5cb2570f4d193dc0