Tunable Temperature Characteristic of Terahertz Bragg Fiber Filled with Liquid Water
Source abstract
Abstract
Hollow-core terahertz (THz) fibers have attracted a lot of research interest due to the low loss and easy inner modification with functional materials. Liquid water has unique properties in the THz region and has been widely investigated in THz emission, sensing, and devices. In this paper, a hollow-core THz Bragg fiber with a water defect layer is proposed. The finite element method is used to verify and analyze the tunable temperature characteristic of the water-filled THz fiber. The numerical analysis results show that the confinement loss and the low-frequency side of the dip near 0.5 THz can be controlled by the temperature of the liquid water. The temperature sensitivity of the THz fiber is obtained at 0.09614 dB·m−1/K at 0.45 THz with a high core power fraction up to 98%. The proposed THz fiber has potential applications in THz interaction with liquid and THz tunable devices.
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Research context
OpenAlex topics: Terahertz technology and applications · Photonic Crystal and Fiber Optics · Spectroscopy and Laser Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Tianjin Key Laboratory of Optoelectronic Detection Technology and System, School of Electrical and Electronic Engineering, Tiangong University, Tianjin 300387, China
Key Laboratory of Opto-Electronic Information Technology, Ministry of Education, School of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Tianjin City · Education Commission Research Project of Tianjin · the key Technologies R & D Program of Tianjin · Open Project Funding of Key Laboratory of Medical Protection for Electromagnetic Radiation, Ministry of Education of China · China Postdoctoral Science Foundation funded project
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