TY - JOUR T1 - Designing optical system with off-axis parabolic mirrors for THz communication setup AU - Shekera, A.Yu. AU - Shevchik-Shekera, A.V. AU - Golenkov, O.G. AU - Zabudsky, V.V. AU - Lysiuk, I.O. AU - Sizov, F.F. AU - Tsybrii, Z.F. JO - Semiconductor Physics, Quantum Electronics & Optoelectronics VL - 29 IS - 1 SP - 091 EP - 096 PY - 2026 DO - 10.15407/spqeo29.01.091 UR - https://doi.org/10.15407/spqeo29.01.091 AB - The terahertz (THz) range of the electromagnetic spectrum is considered for data transmission, including future 6G networks. This work focuses on modeling and analyzing a THz optical system using off-axis parabolic mirrors (OAPMs) for collimation and focusing of radiation from a 140 GHz IMPATT diode. Experimental directivity patterns were approximated with a Gaussian distribution and implemented in simulation. The system achieved about 85% power transfer efficiency in modeling and 40% experimentally. The use of OAPMs significantly improves beam collimation, increases peak intensity, and extends transmission range without increasing source power, though additional tracking systems are required. KW - terahertz (THz) range KW - wireless data transfer KW - 6G network KW - off-axis parabolic mirrors. ER -