Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment
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| Název: | Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment |
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| Autoři: | Haiyang Hu, Xiaoling Chen, Miaomiao Zhao, Liyan Wang, Ming Fang, Dong Zhao |
| Zdroj: | Crystals, Vol 13, Iss 3, p 471 (2023) |
| Informace o vydavateli: | MDPI AG |
| Rok vydání: | 2023 |
| Sbírka: | Directory of Open Access Journals: DOAJ Articles |
| Témata: | pressure sensing, defect mode, photonic crystal, superconductor, semiconductor, Crystallography, QD901-999 |
| Popis: | We theoretically investigate the defect mode transmittance of light waves in superconductor–semiconductor photonic crystals and its pressure-sensing dependence. The photonic crystal is composed of alternating superconducting and semiconducting slabs and a defect locates at the center of this structure. Two trapezoid waveguides are fixed at both sides of the crystal, which induces the hydrostatic pressure applied and beams transmitted simultaneously. The resonant wavelength variation in the defect mode is directly proportional to the pressure applied on the system in the near-IR region, which can be utilized for linear pressure sensors in the cryogenic environment. Pressure sensitivity reaches a high value of 2.6 nm/GPa, which is higher than that in the study based on the reflection spectra. The sensitivity coefficient may be modulated by the environment temperature as well. This study has potential regarding pressure-light-wave sensors. |
| Druh dokumentu: | article in journal/newspaper |
| Jazyk: | English |
| Relation: | https://www.mdpi.com/2073-4352/13/3/471; https://doaj.org/toc/2073-4352; https://doaj.org/article/e4aef01166e24b0fab0c14a0a5dfffe9 |
| DOI: | 10.3390/cryst13030471 |
| Dostupnost: | https://doi.org/10.3390/cryst13030471 https://doaj.org/article/e4aef01166e24b0fab0c14a0a5dfffe9 |
| Přístupové číslo: | edsbas.16DDA000 |
| Databáze: | BASE |
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