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Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment

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Bibliographic Details
Title: Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment
Authors: Haiyang Hu, Xiaoling Chen, Miaomiao Zhao, Liyan Wang, Ming Fang, Dong Zhao
Source: Crystals, Vol 13, Iss 3, p 471 (2023)
Publisher Information: MDPI AG
Publication Year: 2023
Collection: Directory of Open Access Journals: DOAJ Articles
Subject Terms: pressure sensing, defect mode, photonic crystal, superconductor, semiconductor, Crystallography, QD901-999
Description: 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.
Document Type: article in journal/newspaper
Language: 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
Availability: https://doi.org/10.3390/cryst13030471
https://doaj.org/article/e4aef01166e24b0fab0c14a0a5dfffe9
Accession Number: edsbas.16DDA000
Database: BASE
Description
Abstract: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.
DOI:10.3390/cryst13030471