Designing of a quantum TIA to improve FSO signal reception

Free Space Optic Communication (FSO) is one of the communication systems chosen for 5G + / 6G backhaul. Many works were done to improve signal quality either at emission, transmission channel or at reception through photodetector. The aim of this work is to design a new transimpedance amplifier (TIA...

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Bibliographic Details
Published in:Scientific African 2023-03, Vol.19, p.e01539, Article e01539
Main Authors: Teuma Mbezi, M., Samuel, Eke, Idelette Som, H.J., Mouangue Ruben, M.
Format: Article
Language:English
Subjects:
Free Space Optical transmission
negative electrical resistance
quantum device
transimpedance amplifier
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Summary:Free Space Optic Communication (FSO) is one of the communication systems chosen for 5G + / 6G backhaul. Many works were done to improve signal quality either at emission, transmission channel or at reception through photodetector. The aim of this work is to design a new transimpedance amplifier (TIA) to improve Free Space Optic Communication (FSO) photodetector performance. To achieve our purpose, a negative electrical resistance was introduced into conventional TIA. SPICE software and Kirchhoff's laws were used to design and analyze the circuit. The obtained results show that the new TIA has a better amplitude gain response and lower equivalent noise than conventional TIAs. High bandwidth and flat amplitude response in the pass band characterize our TIA. This characteristic is one of the two criteria for a photodetector to be considered as a quantum device. A 3D gain representation highlights different regions of positive and negative feedback resistors and frequencies to be used or avoided in order to ensure TIA stability.
ISSN:2468-2276
2468-2276
DOI:10.1016/j.sciaf.2022.e01539