title: Fiber-based swept-source terahertz radar.
abstract: We demonstrate an all-terahertz swept-source imaging radar operated at room temperature by using terahertz fibers for radiation delivery and with a terahertz-fiber directional coupler acting as a Michelson interferometer. By taking advantage of the high water reflection contrast in the low terahertz regime and by electrically sweeping at a high speed a terahertz source combined with a fast rotating mirror, we obtained the living object's distance information with a high image frame rate. Our experiment showed that this fiber-based swept-source terahertz radar could be used in real time to locate concealed moving live objects with high stability.
authors.affiliation: Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan.
authors.forename: Yu-Wei
authors.initials: YW
authors.lastname: Huang
authors.forename: Tzu-Fang
authors.initials: TF
authors.lastname: Tseng
authors.forename: Chung-Chiu
authors.initials: CC
authors.lastname: Kuo
authors.forename: Yuh-Jing
authors.initials: YJ
authors.lastname: Hwang
authors.forename: Chi-Kuang
authors.initials: CK
authors.lastname: Sun