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Registered APPARATUS AND METHOD OF GENERATING TERAHERTZ SIGNAL USING DIRECTLY-MODULATED LASER

Inventors
Kim Eon-Sang, Minkyu Sung, Cho-Seung-Hyun, Sang Rok Moon
Application No.
17695346 (2022.03.15)
Publication No.
20220303017 (2022.09.22)
Registration No.
11799553 (2023.10.24)
Country
UNITED STATES
Project Code
20ZH1100, 연결의 한계를 극복하는 초연결 입체통신 기술 연구, Byun Woo Jin
Abstract
Provided are an apparatus and method of generating a terahertz (THz) signal using a directly-modulated laser. An apparatus of generating a THz signal includes a first directly-modulated laser configured to output a local oscillator (LO) signal, a second directly-modulated laser configured to receive a baseband signal used as data and optically modulate the baseband signal, a band-pass filter configured to filter a spectral component of the baseband signal optically modulated and outputted through the second directly-modulated laser by using a specific frequency bandwidth, a coupler configured to couple the baseband signal filtered through the band-pass filter and the LO signal to each other, and a uni-travelling-carrier photodiode (UTC-PD) configured to generate a THz signal by beating the baseband signal and the LO signal coupled to each other.