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The investigation of optical communication systems transmitting information using laser or LED radiation in free space are a promising direction in the field of telecommunication technologies. The efficiency of such systems’ work largely depends on the relative position of the optical source and receiver, for even minor changes in the position of the transmitting or receiving device can lead to a significant decrease in the power of the received optical radiation signal. In this work, the seasonal temperature fluctuations effect on the recording properties of silicon photomultipliers is studied. Silicon photomultipliers with similar structural and technical characteristics were selected for the study: KETEK RM 3325, ON Semi FC 30035, and KOF5-1035. The experimental data obtained indicate a temperature dependence of the flat viewing angle of these photodetectors. A rise in temperature in the range of 233–313 K leads to a decrease in the flat viewing angle from 170 to 155° for KETEK RM 3325 and ON Semi FC 30035, and from 130 to 115° for KOF5-1035. It has been established that the decrease in this parameter for all studied samples does not exceed 11 %. The studied silicon photomultipliers have a large flat viewing angle (up to 170°) and can be effectively used as photodetectors in open optical communication systems under conditions of seasonal temperature fluctuations in the temperate geographic zone throughout the year without the need for complex thermal stabilization.

Key words: optical communication systems, silicon photomultiplier, flat viewing angle
Published in: Integral electronics elements
Bibliography link: Gulakov I. R., Zenevich A. O., Kochergina O. V. Analysis of the change in the flat viewing angle of silicon photomultipliers under seasonal temperature fluctuations. Izv. vuzov. Elektronika = Proc. Univ. Electronics. 2026;31(1):20–28. (In Russ.). https://doi.org/10.24151/1561-5405-2026-31-1-20-28.

Ivan R. Gulakov
Belarusian State Academy of Communications, Belarus, 220114, Minsk, F. Skorina st., 8/2

Andrey O. Zenevich
Belarusian State Academy of Communications, Belarus, 220114, Minsk, F. Skorina st., 8/2

Olga V. Kochergina
Belarusian State Academy of Communications, Belarus, 220114, Minsk, F. Skorina st., 8/2

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UDK: 621.382
Publication type: Scientific article
Source lang: Russian
DOI: 10.24151/1561-5405-2026-31-1-20-28
RISC id: LQCFOQ

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