Proof-of-concept of a miniature pressure sensor based on coupled optical WGMs excited in a dielectric microsphere; Optics and Laser Technology; Vol. 151

Proof-of-concept of a miniature pressure sensor based on coupled optical WGMs excited in a dielectric microsphere; Optics and Laser Technology; Vol. 151

Detalles Bibliográficos
Parent link:Optics and Laser Technology
Vol. 151.— 2022.— [108015, 4 p.]
Autor principal: Geynts Yu. E. Yury Elmarovich
Autor Corporativo: Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение электронной инженерии
Otros Autores: Minin O. V. Oleg Vladilenovich, Minin I. V. Igor Vladilenovich
Sumario:Title screen
Optical whispering-gallery mode (WGM) resonators retain increased interest as a key element in various high-resolution sensing and spectroscopic devices in modern optoelectronic, optofluidic and Lab-on-chip technologies. As a theoretical proof-of-concept, we present a new miniature pressure sensor based on coupled WGMs optically excited in a dielectric microsphere placed near a flexible reflective membrane which acts as an ambient pressure sensing element. WGMs are excited by free-space coupling of incoming optical radiation to a spherical microparticle. The distinctive feature of proposed sensor is double WGM excitation by forward and backward propagating radiation upon reflection from a membrane that causes WGMs interference in particle volume. Unlike known WGM-sensors, the proposed design utilize not the resonant frequency shift but the changes in optical intensity of resulting field established in the microsphere which carries information about the exact position of pressure-loaded membrane. The sensitivity of the proposed sensor strongly depends on the quality factor of the working resonance, as well as geometrical and mechanical parameters of flexible reflecting membrane. Important advantages of the proposed sensor are its miniature design and the absence of a mechanical contact of pressure-sensitive element with WGM resonator.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2022
Materias:
электронный ресурс
труды учёных ТПУ
whispering-gallery mode
spherical microparticle
pressure sensor
микрочастицы
датчики давления
сенсорные устройства
микросферы
Acceso en línea:https://doi.org/10.1016/j.optlastec.2022.108015
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667279

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