等离子体辅助热压法实现单极化单模低损耗的坚固柔性空心赛道形太赫兹波导

IF 3.1 3区 物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2024-08-22 DOI:10.1016/j.infrared.2024.105513
Sheng Liu, Guangning Hou, Zhipeng Zha, Shuoying Yu, Jun Ding, Shaohua Liu, Chengbin Jing, Junhao Chu
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引用次数: 0

摘要

通过简单的热压方法和等离子处理,设计并制备了一种具有赛道形横截面的柔性单极化单模(SPSM)聚合物/Ag 涂层空心波导。利用有限元法对波导结构参数进行了数值优化,在高双折射(>0.8)空心赛道形波导(HRW)中实现了 SPSM 传输。通过热压市售的圆形丙烯腈-丁二烯-苯乙烯(ABS)和聚醚醚酮(PEEK)管材,然后进行等离子处理和镀银,就能方便地制备出赛道状波导。制备出的长度为 40 厘米的 HRW 样品在 0.1 太赫兹时的直线传输损耗分别为 1.74 和 1.68 dB/m,极化率为 99.9%。当波导样品以 10 厘米为半径弯曲 120° 或扭曲 90° 时,额外损耗分别小于 0.22 和 0.14 dB/m,而极化度几乎保持不变。经过 200 小时的水热老化(85 RH%,85 ℃)和 20 次高温(85 ℃)/低温(-40 ℃)测试后,损耗的增加小于 0.14 dB/m,极化度保持不变。由于 HRW 具有 SPSM 性能高、重量轻、坚固耐用、灵活性强和易于制造等优点,因此可在实际应用中替代传统的矩形金属波导。
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Robust flexible hollow racetrack-shaped terahertz waveguide with single-polarization single-mode and low-loss by plasma aided hot-pressing method

A flexible single-polarization single-mode (SPSM) polymer/Ag-coated hollow waveguide with a racetrack-shaped cross-section was designed and prepared using a simple hot-pressing method and plasma treatment. The waveguide structural parameters were numerically optimized using the finite element method and the SPSM transmission can be achieved in a high birefringent (>0.8) hollow racetrack-shaped waveguide (HRW). The racetrack-like waveguides were facilely prepared by hot-pressing commercially available circular acrylonitrile butadiene styrene (ABS) and poly-ether-ether-ketone (PEEK) tubing, followed by plasma treatment and silver-plating. The HRW samples with a length of 40 cm were prepared, with a straight transmission loss of 1.74 and 1.68 dB/m at 0.1 THz, respectively, and the polarization degree is 99.9 %. When bent for 120° at a 10 cm radius or twisted by 90°, the waveguide samples have additional losses less than 0.22 and 0.14 dB/m, respectively, while the polarization degrees keep almost unchanged. After 200 h hydrothermal aging (85 RH%, 85 ℃) and 20 times high (85 ℃)/low (−40 ℃) temperature tests, the loss increase is less than 0.14 dB/m and the polarization degree remains unaffected. The HRW could be used in practice as a competitive substitute for traditional rectangular metal waveguides due to its high SPSM performance, lightweight, robustness, flexibility, and easy fabrication.

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来源期刊
CiteScore
5.70
自引率
12.10%
发文量
400
审稿时长
67 days
期刊介绍: The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.
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