Terahertz sensor via ultralow-loss dispersion-flattened polymer optical fiber: Design and analysis

Wanli Luo; Peng Jiang; Qiang Xu; Lei Cao; Adam Jones; Kang Li; Nigel Copner; Yongkang Gong

doi:10.3390/ma14174921

Terahertz sensor via ultralow-loss dispersion-flattened polymer optical fiber: Design and analysis

Wanli Luo, Peng Jiang, Qiang Xu^*, Lei Cao, Adam Jones, Kang Li^*, Nigel Copner, Yongkang Gong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

A novel cyclic olefin copolymer (COC)-based polymer optical fiber (POF) with a rectangular porous core is designed for terahertz (THz) sensing by the finite element method. The numerical simulations showed an ultrahigh relative sensitivity of 89.73% of the x-polarization mode at a frequency of 1.2 THz and under optimum design conditions. In addition to this, they showed an ultralow confinement loss of 2.18 × 10⁻¹² cm⁻¹, a high birefringence of 1.91 × 10⁻³, a numerical aperture of 0.33, and an effective mode area of 1.65 × 10⁵ μm² was obtained for optimum design conditions. Moreover, the range dispersion variation was within 0.7 ± 0.41 ps/THz/cm, with the frequency range of 1.0–1.4 THz. Compared with the traditional sensor, the late-model sensor will have application value in THz sensing and communication.

Original language	English
Article number	4921
Journal	Materials
Volume	14
Issue number	17
DOIs	https://doi.org/10.3390/ma14174921
Publication status	Published - 29 Aug 2021
Externally published	Yes

Keywords

Fiber optics sensors
Finite element method
Polymer optical fiber
Terahertz wave

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title = "Terahertz sensor via ultralow-loss dispersion-flattened polymer optical fiber: Design and analysis",

abstract = "A novel cyclic olefin copolymer (COC)-based polymer optical fiber (POF) with a rectangular porous core is designed for terahertz (THz) sensing by the finite element method. The numerical simulations showed an ultrahigh relative sensitivity of 89.73% of the x-polarization mode at a frequency of 1.2 THz and under optimum design conditions. In addition to this, they showed an ultralow confinement loss of 2.18 × 10−12 cm−1, a high birefringence of 1.91 × 10−3, a numerical aperture of 0.33, and an effective mode area of 1.65 × 105 μm2 was obtained for optimum design conditions. Moreover, the range dispersion variation was within 0.7 ± 0.41 ps/THz/cm, with the frequency range of 1.0–1.4 THz. Compared with the traditional sensor, the late-model sensor will have application value in THz sensing and communication.",

keywords = "Fiber optics sensors, Finite element method, Polymer optical fiber, Terahertz wave",

author = "Wanli Luo and Peng Jiang and Qiang Xu and Lei Cao and Adam Jones and Kang Li and Nigel Copner and Yongkang Gong",

note = "Funding Information: Funding: This work is supported by the National Natural Science Foundation of China (Grant No. 11547247), International Science and Technology Cooperation and Exchanges Project of Shaanxi (Project No: 2021KW-39), and Natural Science Basic Research Program of Shaanxi (Project No: 2021JQ-800). Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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doi = "10.3390/ma14174921",

language = "English",

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T1 - Terahertz sensor via ultralow-loss dispersion-flattened polymer optical fiber

T2 - Design and analysis

AU - Luo, Wanli

AU - Jiang, Peng

AU - Xu, Qiang

AU - Cao, Lei

AU - Jones, Adam

AU - Li, Kang

AU - Copner, Nigel

AU - Gong, Yongkang

N1 - Funding Information: Funding: This work is supported by the National Natural Science Foundation of China (Grant No. 11547247), International Science and Technology Cooperation and Exchanges Project of Shaanxi (Project No: 2021KW-39), and Natural Science Basic Research Program of Shaanxi (Project No: 2021JQ-800). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/8/29

Y1 - 2021/8/29

N2 - A novel cyclic olefin copolymer (COC)-based polymer optical fiber (POF) with a rectangular porous core is designed for terahertz (THz) sensing by the finite element method. The numerical simulations showed an ultrahigh relative sensitivity of 89.73% of the x-polarization mode at a frequency of 1.2 THz and under optimum design conditions. In addition to this, they showed an ultralow confinement loss of 2.18 × 10−12 cm−1, a high birefringence of 1.91 × 10−3, a numerical aperture of 0.33, and an effective mode area of 1.65 × 105 μm2 was obtained for optimum design conditions. Moreover, the range dispersion variation was within 0.7 ± 0.41 ps/THz/cm, with the frequency range of 1.0–1.4 THz. Compared with the traditional sensor, the late-model sensor will have application value in THz sensing and communication.

AB - A novel cyclic olefin copolymer (COC)-based polymer optical fiber (POF) with a rectangular porous core is designed for terahertz (THz) sensing by the finite element method. The numerical simulations showed an ultrahigh relative sensitivity of 89.73% of the x-polarization mode at a frequency of 1.2 THz and under optimum design conditions. In addition to this, they showed an ultralow confinement loss of 2.18 × 10−12 cm−1, a high birefringence of 1.91 × 10−3, a numerical aperture of 0.33, and an effective mode area of 1.65 × 105 μm2 was obtained for optimum design conditions. Moreover, the range dispersion variation was within 0.7 ± 0.41 ps/THz/cm, with the frequency range of 1.0–1.4 THz. Compared with the traditional sensor, the late-model sensor will have application value in THz sensing and communication.

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KW - Terahertz wave

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Terahertz sensor via ultralow-loss dispersion-flattened polymer optical fiber: Design and analysis

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