公开(公告)号：US11799553B2

公开(公告)日：2023-10-24

申请号：US17695346

申请日：2022-03-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Eon-Sang Kim ,  Sang Rok Moon ,  Minkyu Sung ,  Seung-Hyun Cho

IPC: H04B10/50 ,  H04B10/079 ,  H04B10/69

CPC classification number: H04B10/504 ,  H04B10/0797 ,  H04B10/6911

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.