Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing
A compact fiber ultrasound-sensing device comprising a commercially available Barium Titanate (BaTiO<sub>3</sub>) glass microsphere coupled to an open cavity off-core Fabry–Perot interferometer (FPI) fiber sensor is proposed and demonstrated. The open cavity is fabricated through splicin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/14/5328 |
| _version_ | 1797433151293751296 |
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| author | Gerard Tatel Xiaoyi Bao |
| author_facet | Gerard Tatel Xiaoyi Bao |
| author_sort | Gerard Tatel |
| collection | DOAJ |
| description | A compact fiber ultrasound-sensing device comprising a commercially available Barium Titanate (BaTiO<sub>3</sub>) glass microsphere coupled to an open cavity off-core Fabry–Perot interferometer (FPI) fiber sensor is proposed and demonstrated. The open cavity is fabricated through splicing two segments of a single mode fiber (SMF-28) at lateral offsets. The lateral offset is matched to the radius of the microsphere to maximize their coupling and allow for an increased sensing response. Furthermore, the microsphere can be moved along the open-air cavity to allow for tuning of the reflection spectrum. The multiple passes of the FPI enabled by the high refractive index microsphere results in a 40 dB enhancement of finesse and achieves broadband ultrasound sensing from 0.1–45.6 MHz driven via a piezoelectric transducer (PZT) centered at 3.7 MHz. The goal is to achieve frequency detection in the MHz range using a repeatable, cost effective, and easy to fabricate FPI sensor design. |
| first_indexed | 2024-03-09T10:13:01Z |
| format | Article |
| id | doaj.art-f508dcf9723d4c5783d3589b6f64ef17 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T10:13:01Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f508dcf9723d4c5783d3589b6f64ef172023-12-01T22:40:38ZengMDPI AGSensors1424-82202022-07-012214532810.3390/s22145328Microsphere Coupled Off-Core Fiber Sensor for Ultrasound SensingGerard Tatel0Xiaoyi Bao1Physics Department, University of Ottawa, Ottawa, ON K1N 6N5, CanadaPhysics Department, University of Ottawa, Ottawa, ON K1N 6N5, CanadaA compact fiber ultrasound-sensing device comprising a commercially available Barium Titanate (BaTiO<sub>3</sub>) glass microsphere coupled to an open cavity off-core Fabry–Perot interferometer (FPI) fiber sensor is proposed and demonstrated. The open cavity is fabricated through splicing two segments of a single mode fiber (SMF-28) at lateral offsets. The lateral offset is matched to the radius of the microsphere to maximize their coupling and allow for an increased sensing response. Furthermore, the microsphere can be moved along the open-air cavity to allow for tuning of the reflection spectrum. The multiple passes of the FPI enabled by the high refractive index microsphere results in a 40 dB enhancement of finesse and achieves broadband ultrasound sensing from 0.1–45.6 MHz driven via a piezoelectric transducer (PZT) centered at 3.7 MHz. The goal is to achieve frequency detection in the MHz range using a repeatable, cost effective, and easy to fabricate FPI sensor design.https://www.mdpi.com/1424-8220/22/14/5328Fabry–Perot interferometermicrosphereultrasoundoff-corefinesse |
| spellingShingle | Gerard Tatel Xiaoyi Bao Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing Sensors Fabry–Perot interferometer microsphere ultrasound off-core finesse |
| title | Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing |
| title_full | Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing |
| title_fullStr | Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing |
| title_full_unstemmed | Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing |
| title_short | Microsphere Coupled Off-Core Fiber Sensor for Ultrasound Sensing |
| title_sort | microsphere coupled off core fiber sensor for ultrasound sensing |
| topic | Fabry–Perot interferometer microsphere ultrasound off-core finesse |
| url | https://www.mdpi.com/1424-8220/22/14/5328 |
| work_keys_str_mv | AT gerardtatel microspherecoupledoffcorefibersensorforultrasoundsensing AT xiaoyibao microspherecoupledoffcorefibersensorforultrasoundsensing |