[16a-B2-1~13] 3.9 Terahertz technologies

△ [16a-B2-4] Analysis of transmission properties of terahertz hollow-optical fiber by using time-domain spectroscopy and application for remote spectroscopy

〇(M2)Kosei Ito¹, Takashi Katagiri², Yuji Matsuura¹ (1.Graduate school of Biomedical Engineering, Tohoku Univ., 2.Graduate school of Engineering, Tohoku univ.)

Keywords:THz wave, Hollow optical fiber, Time-domain spectroscopy

Behavior of terahertz pulse propagation in hollow optical fibers is investigated by using terahertz time-domain spectroscopy. Short-time Fourier transform is applied to temporal waveform for investigation of mode properties and as a result, it is confirmed that the interference peaks in the loss spectra are due to mode mixing in hollow optical fibers. In addition, we performed a THz wave remote spectroscopy using the hollow optical fiber and acquired a clear transmission spectrum of the theophylline.